[Federal Register Volume 61, Number 115 (Thursday, June 13, 1996)]
[Proposed Rules]
[Pages 29996-30001]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-14988]



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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39

[Docket No. 95-NM-227-AD]
RIN 2120-AA64


Airworthiness Directives; Airbus Model A300, A300-600, A310, and 
A320 Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: This document proposes the supersedure of an existing 
airworthiness directive (AD), applicable to certain Airbus Model A300, 
A300-600, A310, and A320 series airplanes, that currently requires an 
inspection of the landing gear brakes for wear, and replacement if the 
specified wear limits are not met. That AD also requires incorporation 
of the specified wear limits into the FAA-approved maintenance 
inspection program. This action would require that certain wear limits 
that are dependent on brake stack weight be used in conjunction with 
specified brake stack weights, and that maximum allowable

[[Page 29997]]

brake wear limits for additional brake units be incorporated into the 
FAA-approved maintenance program. This proposal is prompted by a report 
that some brakes that are subject to the requirements of the existing 
AD have not been removed from service and by the determination of the 
maximum allowable brake wear limits for additional brake unit part 
numbers. The actions specified by the proposed AD are intended to 
prevent the loss of brake effectiveness during a high energy rejected 
takeoff.

DATES: Comments must be received by July 22, 1996.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, ANM-103, 
Attention: Rules Docket No. 95-NM-227-AD, 1601 Lind Avenue, SW., 
Renton, Washington 98055-4056. Comments may be inspected at this 
location between 9:00 a.m. and 3:00 p.m., Monday through Friday, except 
Federal holidays.
    The service information referenced in the proposed rule may be 
obtained from Messier Services, 45635 Willow Pond Plaza, Sterling, 
Virginia 20164; Allied Signal Aerospace, Technical Publications, Dept. 
65-70, P.O. Box 52170, Phoenix, Arizona 85072-2170; or BFGoodrich 
Company, Aircraft Evacuation Systems, Department 7916, Phoenix, Arizona 
85040. This information may be examined at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington.

FOR FURTHER INFORMATION CONTACT: Joe Jacobsen, Aerospace Engineer, 
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 
227-2011; fax (206) 227-1149.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to participate in the making of the 
proposed rule by submitting such written data, views, or arguments as 
they may desire. Communications shall identify the Rules Docket number 
and be submitted in triplicate to the address specified above. All 
communications received on or before the closing date for comments, 
specified above, will be considered before taking action on the 
proposed rule. The proposals contained in this notice may be changed in 
light of the comments received.
    Comments are specifically invited on the overall regulatory, 
economic, environmental, and energy aspects of the proposed rule. All 
comments submitted will be available, both before and after the closing 
date for comments, in the Rules Docket for examination by interested 
persons. A report summarizing each FAA-public contact concerned with 
the substance of this proposal will be filed in the Rules Docket.
    Commenters wishing the FAA to acknowledge receipt of their comments 
submitted in response to this notice must submit a self-addressed, 
stamped postcard on which the following statement is made: ``Comments 
to Docket Number 95-NM-227-AD.'' The postcard will be date stamped and 
returned to the commenter.

Availability of NPRMs

    Any person may obtain a copy of this NPRM by submitting a request 
to the FAA, Transport Airplane Directorate, ANM-103, Attention: Rules 
Docket No. 95-NM-227-AD, 1601 Lind Avenue, SW., Renton, Washington 
98055-4056.

Discussion

    On December 14, 1994, the FAA issued AD 94-26-05, amendment 39-9101 
(59 FR 65927, December 22, 1994), applicable to certain Airbus Model 
A300, A300-600, A310, and A320 series airplanes, to require an 
inspection of certain landing gear brakes for wear, and replacement if 
the specified wear limits are not met. That AD also requires 
incorporation of the specified wear limits into the FAA-approved 
maintenance inspection program. That action was prompted by an accident 
in which a transport category airplane executed a rejected takeoff 
(RTO) and was unable to stop on the runway due to worn brakes, and 
subsequent review of allowable brake wear limits for all transport 
category airplanes. The requirements of that AD are intended to prevent 
the loss of brake effectiveness during a high energy RTO.

Actions Since Issuance of Previous Rule

    Since the issuance of that AD, the airplane manufacturer and one 
brake unit manufacturer have advised the FAA that certain brake part 
numbers and maximum brake wear information provided to the FAA and 
specified in AD 94-26-05 was incorrect and must be revised. The FAA 
finds that this information must be revised in order to ensure that any 
brake worn beyond its maximum wear limit is replaced with a brake 
within that limit.
    Additionally, the FAA has been advised that some brakes that are 
subject to the requirements of AD 94-26-05 have not been removed from 
service. These particular brakes are unable to withstand maximum RTO 
energy with the wear pin limit specified in the existing AD due to 
lower brake stack weights. Consequently, the FAA has determined that a 
requirement that certain wear limits that are dependent on brake stack 
weight must be used in conjunction with appropriate brake stack weights 
specified in the brake manufacturer's Component Maintenance Manual 
(CMM), certain service bulletins, or the Airplane Maintenance Manual.
    Further, additional brake unit part numbers that were not addressed 
in AD 94-26-05 have since been evaluated, and the maximum allowable 
brake wear limits for these brake units have been determined in 
accordance with a methodology approved by the FAA. The newly identified 
maximum brake wear limits must be applied to these brake configurations 
in order to ensure their braking effectiveness. The FAA has determined 
that airplanes equipped with these brake units are currently subject to 
the same unsafe condition addressed in the existing AD.
    The FAA also finds that references to certain brake part numbers 
that were specified in the existing AD must be clarified to indicate 
that the listing refers to a ``series''of brake part numbers.
    Additionally, the FAA has determined that certain service 
information specified in the existing AD must be revised to specify 
issuance dates and revision levels.

Type Certification of the Affected Airplanes

    These airplane models are manufactured in France and are type 
certificated for operation in the United States under the provisions of 
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and 
the applicable bilateral airworthiness agreement.

Explanation of Requirements of Proposed Rule

    Since an unsafe condition has been identified that is likely to 
exist or develop on other airplanes that are of the same type design, 
that are equipped with the subject brake configurations, and that are 
registered in the United States, the proposed AD would supersede AD 94-
26-05. This proposed AD would continue to require inspection of certain 
landing gear brakes for wear, replacement of the brakes if certain wear 
limits are not met, and incorporation of the specified wear limits into 
the FAA-approved maintenance inspection program. Additionally, the 
proposed AD would:

[[Page 29998]]

     Revise certain brake part numbers and maximum brake wear 
information specified in the existing AD;
     Require that certain wear limits that are dependent on 
brake stack weight be used in conjunction with appropriate brake stack 
weights specified in various service documents; and
     Require that maximum allowable brake wear limits for 
additional brake units be incorporated into the FAA-approved 
maintenance program.

Cost Impact

    There are approximately 165 Model A300, A300-600, A310, and A320 
series airplanes of U.S. registry that would be affected by this 
proposed AD.
    Incorporation of the revision of the FAA-approved maintenance 
inspection program, which is currently required by AD 94-26-05, takes 
approximately 20 work hours per operator (for 4 U.S. operators) to 
accomplish, at an average labor rate of $60 per work hour. Based on 
these figures, the cost impact on U.S. operators to accomplish this 
currently required action is estimated to be $4,800, or $1,200 per 
operator.
    The inspection currently required by AD 94-26-05 takes 
approximately 15 work hours per airplane to accomplish, at an average 
labor rate of $60 per work hour. The cost of required parts to 
accomplish the change in wear limits for these airplanes (that is, the 
cost resulting from the requirement to change the brakes before they 
are worn to their previously approved limits for a one-time change) 
will be approximately $2,236 per airplane. The FAA estimates that 46 of 
the 165 affected airplanes of U.S. registry will be required to 
accomplish the inspection. Based on these figures, the cost impact on 
U.S. operators to accomplish the currently required inspection is 
estimated to be $144,256, or $3,136 per airplane.
    The new actions that are proposed in this AD action would affect 
one U.S. operator of 8 airplanes. The FAA estimates that the new 
actions would take approximately 15 work hours per airplane to 
accomplish, at an average labor rate of $60 per work hour. Required 
parts would cost approximately $2,236 per airplane. Based on these 
figures, the cost impact on the affected U.S. operator of the proposed 
requirements of this AD is estimated to be $3,136 per airplane.
    The cost impact figures discussed above are based on assumptions 
that no operator has yet accomplished any of the current or proposed 
requirements of this AD action, and that no operator would accomplish 
those actions in the future if this AD were not adopted.

Regulatory Impact

    The regulations proposed herein would not have substantial direct 
effects on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government. Therefore, in 
accordance with Executive Order 12612, it is determined that this 
proposal would not have sufficient federalism implications to warrant 
the preparation of a Federalism Assessment.
    For the reasons discussed above, I certify that this proposed 
regulation (1) is not a ``significant regulatory action'' under 
Executive Order 12866; (2) is not a ``significant rule'' under the DOT 
Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 
and (3) if promulgated, will not have a significant economic impact, 
positive or negative, on a substantial number of small entities under 
the criteria of the Regulatory Flexibility Act. A copy of the draft 
regulatory evaluation prepared for this action is contained in the 
Rules Docket. A copy of it may be obtained by contacting the Rules 
Docket at the location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration proposes to amend 
part 39 of the Federal Aviation Regulations (14 CFR part 39) as 
follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec. 39.13   [Amended]

    2. Section 39.13 is amended by removing amendment 39-9101 (59 FR 
65927, December 22, 1994), and by adding a new airworthiness directive 
(AD), to read as follows:

Airbus Industrie: Docket 95-NM-227-AD. Supersedes AD 94-26-05, 
Amendment 39-9101.

    Applicability: Model A300, A300-600, A310, and A320 series 
airplanes equipped with Messier-Bugatti, BFGoodrich, Allied Signal 
(ALS) Aerospace Company (Bendix), or Aircraft Braking Systems (ABS) 
brakes; certificated in any category.

    Note 1: This AD applies to each airplane identified in the 
preceding applicability provision, regardless of whether it has been 
modified, altered, or repaired in the area subject to the 
requirements of this AD. For airplanes that have been modified, 
altered, or repaired so that the performance of the requirements of 
this AD is affected, the owner/operator must request approval for an 
alternative method of compliance in accordance with paragraph (d) of 
this AD. The request should include an assessment of the effect of 
the modification, alteration, or repair on the unsafe condition 
addressed by this AD; and, if the unsafe condition has not been 
eliminated, the request should include specific proposed actions to 
address it.

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent the loss of brake effectiveness during a high energy 
rejected takeoff (RTO), accomplish the following:

RESTATEMENT OF REQUIREMENTS OF AD 94-26-05

    (a) Within 180 days after January 23, 1995 (the effective date 
of AD 94-26-05, amendment 39-9101), accomplish paragraphs (a)(1) and 
(a)(2) of this AD.
    (1) Inspect main landing gear brakes having the brake part 
numbers listed in Table 1, below, for wear. Any brake worn more than 
the maximum wear limit specified in Table 1, below, must be 
replaced, prior to further flight, with a brake within that limit.

                                 Table 1                                
[Airbus Industrie Model A300, A300-600, A310, and A320 Series Airplanes -
Equipped with Messier-Bugatti, BFGoodrich, Allied Signal (ALS) Aerospace
       Company (Bendix), or Aircraft Braking Systems (ABS) Brakes]      
------------------------------------------------------------------------
                                                          Maximum brake 
 Airplane model/         Brake         Brake part No.-  wear limit (inch/
     series-         manufacturer-                             mm)      
------------------------------------------------------------------------
A300 B2-100-       Messier-Bugatti    286349-115        0.98''(25.0 mm).
A300 B2-100-       Messier-Bugatti    286349-116        0.98'' (25.0    
                                                         mm).           
A300 B2-100-       BFGoodrich         2-1449            1.4'' (35.6 mm).
A300 B2-100-       BFGoodrich         2-1449            1.1'' (27.9 mm) 
                                                         S.C.*          
A300 B4-100-       Messier-Bugatti    A21329-41-7-      1.1'' (28.0 mm).

[[Page 29999]]

                                                                        
A300 B4-100-       Messier-Bugatti    A21329-41-17      1.1'' (28.0 mm).
A300 B4-100-       ALS (Bendix)       2606802-3/-4/-5   0.9'' (22.9 mm).
A300 B4-100-       ALS (Bendix)       2606802-3/-4/-5   1.48'' (37.6 mm)
                                                         S.C.*          
A300 B4-100-       BFGoodrich         2-1449            1.4'' (35.6 mm).
A300 B4-100-       BFGoodrich         2-1449            1.1'' (27.9 mm) 
                                                         S.C.*          
A300 B4-200        Messier-Bugatti    C20060-100-       1.1'' (28.0 mm).
  and A300-600-                                                         
A300-600           ALS (Bendix)       2607932-1         0.9'' (22.9 mm).
A300-600           ALS (Bendix)       2607932-1         1.48'' (37.6 mm)
                                                         S.C.*          
A300 B4-600R       Messier-Bugatti    C20210000         1.97'' (50.0    
                                                         mm).           
A300 B4-600R       Messier-Bugatti    C20210200         1.97'' (50.0    
                                                         mm).           
A310-200           Messier-Bugatti    C20089000         1.1'' (28.0 mm).
A310-200           ALS (Bendix)       2606822-1         1.26'' (32.0    
                                                         mm).           
A310-200           ALS (Bendix)       2606822-1         1.5'' (38.2 mm) 
                                                         S.C.*          
A310-300           Messier-Bugatti    C20194000         1.97'' (50.0    
                                                         mm).           
A310-300           Messier-Bugatti    C20194200         1.97'' (50.0    
                                                         mm).           
A310-300           ABS                5010995           1.97'' (50.0    
                                                         mm).           
A320               Messier-Bugatti    C20225000         1.97'' (50.0    
                                                         mm).           
A320               Messier-Bugatti    C20225200         1.97'' (50.0    
                                                         mm).           
A320               BFGoodrich         2-1526-2          1.97'' (50.0    
                                                         mm).           
A320               BFGoodrich         2-1526-3/-4       2.68'' (68.0    
                                                         mm).           
------------------------------------------------------------------------
* S.C. represents ``Service Configured'' brakes, which are marked       
  according to the instructions provided in the brake manufacturer's    
  Component Maintenance Manual (CMM).                                   


    Note 2: Measuring instructions that must be revised to 
accommodate the new brake wear limits specified in Table 1, above, 
can be found in Chapter 32-42-27 of the Airplane Maintenance Manual 
(AMM), in Chapter 32-32-( ) or 32-44-( ) of the brake manufacturer's 
CMM, or in certain service bulletins (SB), as listed in Table 2, 
below:

                                 Table 2                                
------------------------------------------------------------------------
                                                          Date/revision 
      Brake            Part No.--     Document/chapter      (or later   
  manufacturer--                                           revisions)   
------------------------------------------------------------------------
FOR MODEL A300 B2-100 SERIES AIRPLANES:                                 
                                                                        
 Messier-Bugatti-  286349-115-        CMM 32-42-27-     April 1991.     
Messier-Bugatti-   286349-116-        CMM 32-42-27-     April 1991.     
BFGoodrich-        2-1449 and S.C.*-  CMM 32-44-37      January 1993.   
                                      SB 567 (2-1449-   January 30,     
                                       32-4)-            1993.          
                                                                        
 FOR MODEL A300 B4-100 SERIES AIRPLANES:                                
                                                                        
 ALS (Bendix)-     2606802-3-         CMM 32-42-02-     September 1993. 
                   2606802-4          SB 2606802-32-    March 31, 1993. 
                   2606802-5 and       003-                             
                    S.C.*-                                              
BFGoodrich-        2-1449 and S.C.*-  CMM 32-44-37      January 1993.   
                                      SB 567 (2-1449-   January 30,     
                                       32-4)-            1993.          
                                                                        
FOR MODEL A300 B4-200 AND A300-600 SERIES AIRPLANES:                    
                                                                        
ALS (Bendix)-      2607932-1 and      CMM 32-42-27      September 1993. 
                    S.C.*-            SB 2607932-32-    March 31,1993   
                                       002-             and Revision 1/ 
                                                        October 1, 1993.
                                                                        
FOR MODEL A300 B4-600R SERIES AIRPLANES:                                
                                                                        
Messier-Bugatti-   C20210000          Airbus SB 470-32- April 6, 1990.  
                   and C20210200-      675-                             
                                                                        
 FOR MODEL A310-200 SERIES AIRPLANES:                                   
                                                                        
ALS (Bendix)-      2606822-1 & S.C.*- CMM 32-42-03      September 1993. 
                                      SB 2606822-32-    March 31, 1993. 
                                       002 -                            
                                                                        
FOR MODEL A310-300 SERIES AIRPLANES:                                    
                                                                        
Messier-Bugatti-   C20225000          Airbus SB 470-32- April 6, 1990. --
                   and C20225200-      675-                             
------------------------------------------------------------------------
* S.C. represents ``Service Configured'' brakes, which are marked       
  according to the instructions provided in the brake manufacturer's    
  CMM.                                                                  

    (2) Incorporate into the FAA-approved maintenance inspection 
program the maximum brake wear limits specified in paragraph (a)(1) 
of this AD.

    Note 3: Once an operator has complied with the requirements of 
paragraphs (a)(1) and (a)(2) of this AD, those paragraphs do not 
require that operators subsequently record accomplishment of those 
requirements each time a brake is inspected or overhauled in 
accordance with that operator's FAA-approved maintenance inspection 
program.

[[Page 30000]]

NEW REQUIREMENTS OF THIS AD

    (b) Within 90 days after the effective date of this AD, revise 
the FAA-approved maintenance program to include the requirements of 
paragraphs (b)(1), (b)(2), (b)(3), and (b)(4) of this AD. 
Accomplishment of these requirements terminates the requirements of 
paragraph (a) of this AD.
    (1) Incorporate the maximum wear pin limits specified in Table 3 
of this AD into the FAA-approved maintenance program.
    (2) Comply with those measurements thereafter.
    (3) Measure the brake wear in accordance with Chapter 32-42-27 
of the AMM, with Chapter 32-32-( ) of the brake manufacturer's CMM, 
or with certain service bulletins (SB), as listed in Table 4, below. 
Brake wear limits specified in Table 3, below, that are identified 
in the service information specified in Table 4, below, as being 
dependent on brake stack weights shall be used in conjunction with 
the brake stack weights specified in that service information.
    (4) If any brake has measured wear beyond the maximum wear 
limits specified in Table 3 of this AD, prior to further flight, 
replace it with a brake that is within the wear limits specified in 
Table 3.

                                 Table 3                                
Airbus Industrie Model A300, A300-600, A310, and A320 Series Airplanes -
Equipped with Messier-Bugatti, BFGoodrich, Allied Signal (ALS) Aerospace
       Company (Bendix), or Aircraft Braking Systems (ABS) Brakes       
------------------------------------------------------------------------
                                                          Maximum brake 
 Airplane model/         Brake         Brake part No.-  wear limit (inch/
     series-         manufacturer-                             mm)      
------------------------------------------------------------------------
A300 B2-100-       Messier-Bugatti-   286349-115-       0.98'' (25.0    
                                                         mm).           
A300 B2-100-       Messier-Bugatti-   286349-116-       0.98'' (25.0    
                                                         mm).           
A300 B2-100-       BFGoodrich-        2-1449-           1.4'' (35.6 mm).
A300 B2-100-       BFGoodrich-        2-1449-           1.1'' (27.9 mm) 
                                                         S.C.*          
A300 B4-100-       Messier-Bugatti-   A21329-41-7-      1.1'' (28.0 mm).
A300 B4-100-       Messier-Bugatti-   A21329-41-17-     1.1'' (28.0 mm).
A300 B4-100/-200-  ALS (Bendix)-      2606802-3/-4/-5   0.9'' (22.9 mm).
A300 B4-100/-200-  ALS (Bendix)-      2606802-3/-4/-5   1.48'' (37.6 mm)
                                                         S.C.*          
A300-B4-100-       BFGoodrich-        2-1449-           1.4'' (35.6 mm).
A300-B4-100-       BFGoodrich-        2-1449-           1.1'' (27.9 mm) 
                                                         S.C.*          
A300-600-          Messier-Bugatti-   C20060-100        1.1'' (28.0 mm).
                                       Series-                          
A300-600-          ALS (Bendix)-      2607932-1-        0.9'' (22.9 mm).
A300-600-          ALS (Bendix)-      2607932-1-        1.48'' (37.6 mm)
                                                         S.C.*          
A300 B4-600R       Messier-Bugatti-   C20210000 Series- 1.97'' (50.0    
                                                         mm). -         
A300 B4-600R-      Messier-Bugatti-   C20210200 Series- 1.97'' (50.0    
                                                         mm). -         
A310-200-          Messier-Bugatti-   C20089000 Series- 1.1'' (28.0 mm).
                                                         -              
A310-200-          ALS (Bendix)-      2606822-1-        1.26'' (32.0    
                                                         mm).           
A310-200-          ALS (Bendix)-      2606822-1-        1.5'' (38.2 mm) 
                                                         S.C.*          
A310-300-          Messier-Bugatti-   C20194000 Series  1.97'' (50.0    
                                       -                 mm). -         
A310-300-          Messier-Bugatti-   C20194200 Series  1.97'' (50.0    
                                       -                 mm). -         
A310-300-          ABS-               5010995-          2.22'' (56.39   
                                                         mm).           
A320-              Messier-Bugatti-   C20225000 Series- 1.97'' (50.0    
                                                         mm).           
A320-              Messier-Bugatti-   C20225200 Series- 1.97'' (50.0    
                                                         mm). -         
A320-              BFGoodrich-        2-1526-           1.97'' (50.0    
                                                         mm).           
A320-              BFGoodrich-        2-1526-2-         1.97'' (50.0    
                                                         mm).           
A320-              BFGoodrich-        2-1526-5-         1.97'' (50.0    
                                                         mm).           
A320-              BFGoodrich-        2-1526-3/-4-      2.68'' (68.0    
                                                         mm).           
A320-              BFGoodrich-        2-1572-           2.68'' (68.0    
                                                         mm).           
A320-              ABS-               5011075-          2.14'' (54.36   
                                                         mm).           
------------------------------------------------------------------------
* S.C. represents ``Service Configured'' brakes, which are marked       
  according to the instructions provided in the brake manufacturer's    
  CMM.                                                                  


                                 Table 4                                
------------------------------------------------------------------------
                                                          Date/revision 
      Brake             Part No.      Document/chapter      (or later   
   manufacturer                                            revisions)   
------------------------------------------------------------------------
FOR MODEL A300 B2-100 SERIES AIRPLANES:                                 
                                                                        
Messier-Bugatti    286349-115         CMM 32-42-27-     April 30, 1991. 
Messier-Bugatti    286349-116         CMM 32-42-27-     April 30, 1991. 
BFGoodrich         2-1449 and S.C.*   CMM 32-44-37      January 30,     
                                      SB 567 (2-1449-    1993.          
                                       32-4)-           January 30,1993.
                                                                        
FOR MODEL A300 B4-100 SERIES AIRPLANES:                                 
                                                                        
Messier-Bugatti    A21329-41-17       CMM 32-44-37      January 30,     
                                                         1993.          
ALS (Bendix)       2606802-3          CMM 32-42-02      Revision 7/April
                   2606802-4          SB 2606802-32-     30, 1995.      
                   2606802-5 and       003              March 31, 1993, 
                    S.C.*                                and            
                                                        Revision 1/     
                                                         October 1,     
                                                         1993.          
BFGoodrich-        2-1449 and S.C.*   CMM 32-44-37      January 30,     
                                      SB 567 (2-1449-    1993.          
                                       32-4)- -         January 30,     
                                                         1993.          
                                                                        
FOR MODEL A300 B4-200 SERIES AIRPLANES:                                 
                                                                        
Messier-Bugatti    C20060-100 Series  CMM 32-44-24      December 31,    
                                                         1991.          
ALS (Bendix)       2606802-3          CMM 32-42-02      Revision 7/April
                   2606802-4          SB 2606802-32-     30, 1995.      
                   2606802-5 and       003              March 31, 1993, 
                    S.C.*                                and            
                                                        Revision 1/     
                                                         October 1,     
                                                         1993.          
                                                                        
 
[[Page 30001]]

                                                                        
FOR MODEL A300-600 SERIES AIRPLANES:                                    
                                                                        
Messier-Bugatti    C20060-100 Series  CMM 32-44-24      December 31,    
                                                         1991.          
ALS (Bendix)       2607932-1 and      CMM 32-42-05      Revision 4/     
                    S.C.*             SB 2607932-32-     February       
                                       002               15,1992.       
                                      SB 2607932-32-    March 31,1993,  
                                       003               and            
                                                        Revision 1/     
                                                         October 1,     
                                                         1993.          
                                                        May 31, 1995.   
                                                                        
 - - FOR MODEL A300 B4-600R SERIES AIRPLANES:                           
                                                                        
Messier-Bugatti    C20210000          CMM 32-44-51      August 31, 1994.
                   and                SB 470-32-675     Revision 1/     
                   C20210200 Series                     September 26,   
                                                         1994.          
                                                                        
--FOR MODEL A310-200 SERIES AIRPLANES:                                  
                                                                        
Messier-Bugatti    C20089000 Series   CMM 32-46-23      January 31,     
                                                         1992.          
ALS (Bendix)       2606822-1 and      CMM 32-42-03      Revision 5/     
                    S.C.                                January 31,     
                                      SB 2606822-32-     1991.          
                                       002 -            March 31, 1993. 
                                                                        
 --FOR MODEL A310-300 SERIES AIRPLANES:                                 
                                                                        
Messier-Bugatti    C20194000 and      CMM 32-46-37      August 31, 1994.
                   C20194200 Series   SB 470-32-675     Revision 1/     
                                                        September 26,   
                                                         1994.          
ABS                5010995            CMM 32-43-97      February 28,    
                                                         1991.          
                                                                        
 FOR MODEL A320 SERIES AIRPLANES:                                       
                                                                        
Messier-Bugatti    C20225000 and      CMM 32-47-20      January 31,     
                   C20225200 Series   SB 580-32-3042     1995.          
                                                        Revision 1/June 
                                                         30, 1995. ---  
BFGoodrich         2-1526/-2/-5       CMM 32-44-38      March 15, 1993. 
                   2-1526-3/-4        CMM 32-44-38      March 15, 1993. 
                   2-1572             CMM 32-41-63      April 29, 1994. 
ABS                5011075            CMM 32-41-18      February 28,    
                                                         1991.          
------------------------------------------------------------------------
* S.C. represents ``Service Configured'' brakes, which are marked       
  according to the instructions provided in the brake manufacturer's    
  CMM.                                                                  


    NOTE 4: Once an operator has complied with the requirement of 
paragraph (b) of this AD, that paragraph does not require that the 
operator subsequently record accomplishment of those requirements 
each time a brake is inspected or overhauled in accordance with that 
operator's FAA-approved maintenance inspection program.
    (c) Prior to installation of any brake having a part number 
other than those specified in Table 3 of this AD, revise the FAA-
approved maintenance program to include the provisions specified in 
paragraph (b) of this AD for that part number brake, that have been 
approved by the Manager, Standardization Branch, ANM-113, FAA, 
Transport Airplane Directorate.
    -(d) An alternative method of compliance or adjustment of the 
compliance time that provides an acceptable level of safety may be 
used if approved by the Manager, Standardization Branch, ANM-113. 
Operators shall submit their requests through an appropriate FAA 
Principal Maintenance Inspector, who may add comments and then send 
it to the Manager, Standardization Branch, ANM-113.

    Note 5: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Standardization Branch, ANM-113.

    -(e) Special flight permits may be issued in accordance with 
sections 21.197 and 21.199 of the Federal Aviation Regulations (14 
CFR 21.197 and 21.199) to operate the airplane to a location where 
the requirements of this AD can be accomplished. Issued in Renton, 
Washington, on June 6, 1996.
James V. Devany,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 96-14988 Filed 6-12-96; 8:45 am]
BILLING CODE 4910-13-U