[Federal Register Volume 59, Number 174 (Friday, September 9, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-21966]


[[Page Unknown]]

[Federal Register: September 9, 1994]


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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39

[Docket No. 94-NM-42-AD; Amendment 39-9009; AD 94-17-14]

 

Airworthiness Directives; British Aerospace Model BAe 146-100A, -
200A, and -300A Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment supersedes an existing airworthiness directive 
(AD), applicable to British Aerospace Model BAe 146-100A, -200A, and -
300A series airplanes, that currently requires replacing the quick 
release coupling halves on each end of the pump case drain line on the 
hydraulic engine driven pump (EDP) on the number 2 and number 3 engines 
with improved fire resistant coupling halves. This amendment revises 
the applicability of the existing AD. This amendment is prompted by the 
identification of additional airplanes that are subject to the 
addressed unsafe condition. The actions specified by this AD are 
intended to prevent hydraulic fluid leakage from the pump case drain 
line quick release coupling, which could fuel the flames in the event 
of an engine fire.

DATES: Effective on October 11, 1994.
    The incorporation by reference of British Aerospace Service 
Bulletin SB.29-31-01339A, Revision 1, dated July 8, 1993, as listed in 
the regulations, is approved by the Director of the Federal Register as 
of October 11, 1994.
    The incorporation by reference of British Aerospace Service 
Bulletin SB.29-31-01339A, dated May 24, 1993, as listed in the 
regulations, was approved previously by the Director of the Federal 
Register as of January 20, 1994 (58 FR 67310, December 21, 1993).

ADDRESSES: The service information referenced in this AD may be 
obtained from British Aerospace, PLC, Librarian for Service Bulletins, 
P.O. Box 17414, Dulles International Airport, Washington, DC 20041-
0414. This information may be examined at the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, Rules Docket, 
1601 Lind Avenue, SW., Renton, Washington; or at the Office of the 
Federal Register, 800 North Capitol Street, NW., suite 700, Washington, 
DC.

FOR FURTHER INFORMATION CONTACT: William Schroeder, Aerospace Engineer, 
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 
227-2148; fax (206) 227-1320.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) by superseding AD 93-24-05, 
amendment 39-8754 (58 FR 67310, December 21, 1993), which is applicable 
to certain British Aerospace Model BAe 146-100A, -200A, and -300A 
series airplanes, was published in the Federal Register on May 12, 1994 
(59 FR 24670). The action proposed to continue require replacement of 
the quick release coupling halves on each end of the pump case drain 
line on the hydraulic engine driven pump (EDP) on the number 2 and 
number 3 engines with improved fire resistant coupling halves, and 
proposed to revise the applicability of the existing AD to add 
additional airplanes.
    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were received on the 
proposal or the FAA's determination of the cost to the public. The FAA 
has determined that air safety and the public interest require the 
adoption of the rule as proposed.
    The FAA estimates that 46 airplanes of U.S. registry will be 
affected by this AD, that it will take approximately 3 work hours per 
airplane to accomplish the required actions, and that the average labor 
rate is $55 per work hour. Required parts will be provided by the 
manufacturer at no cost to operators. Based on these figures, the total 
cost impact of the AD on U.S. operators is estimated to be $7,590, or 
$165 per airplane.
    The total cost impact figure discussed above is based on 
assumptions that no operator has yet accomplished any of the 
requirements of this AD action, and that no operator would accomplish 
those actions in the future if this AD were not adopted.
    The regulations adopted herein will 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 final 
rule does not have sufficient federalism implications to warrant the 
preparation of a Federalism Assessment.
    For the reasons discussed above, I certify that this action (1) is 
not a ``significant regulatory action'' under Executive Order 12866; 
(2) is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and (3) 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 final evaluation has been prepared for this action 
and it is contained in the Rules Docket. A copy of it may be obtained 
from the Rules Docket at the location provided under the caption 
ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment -

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends 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. App. 1354(a), 1421 and 1423; 49 U.S.C. 
106(g); and 14 CFR 11.89.


Sec. 39.13  [Amended] -

    2. Section 39.13 is amended by removing amendment 39-8754 (58 FR 
67310), and by adding a new airworthiness directive (AD), amendment 39-
9009, to read as follows:

94-17-14  British Aerospace: Amendment 39-9009. Docket 94-NM-42-AD. 
Supersedes AD 93-24-05, Amendment 39-8754.

    -Applicability: Model BAe 146-100A series airplanes, serial 
numbers E1002 through E1199 inclusive; Model BAe 146-200A series 
airplanes, serial numbers E2008 through E2204 inclusive, and E2210 
through E2220 inclusive; and Model BAe 146-300A series airplanes, 
serial numbers E3001 through E3219 inclusive, and E3222; 
certificated in any category. -
    Compliance: Required as indicated, unless accomplished 
previously. -
    To prevent hydraulic fluid leakage from the pump case drain line 
quick release couplings, which could fuel the flames in the event of 
an engine fire, accomplish the following: -
    (a) For airplane serial numbers E3001 through E3207 inclusive, 
E3209 through E3219 inclusive, and E3222: Within 6 months after 
January 20, 1994 (the effective date of AD 93-24-05, Amendment 39-
8754), replace the quick release coupling halves on each end of the 
pump case drain line on the hydraulic engine driven pump (EDP) on 
the number 2 and number 3 engines with improved fire resistant 
coupling halves, in accordance with British Aerospace Service 
Bulletin SB.29-31-01339A, dated May 24, 1993, or SB.29-31-01339A, 
Revision 1, dated July 8, 1993. -
    (b) For airplane serial numbers E1002 through E1199 inclusive, 
E2008 through E2204 inclusive, E2210 through E2220 inclusive, and 
E3208: Within 6 months after the effective date of this AD, replace 
the quick release coupling halves on each end of the pump case drain 
line on the hydraulic EDP on the number 2 and number 3 engines with 
improved fire resistant coupling halves, in accordance with British 
Aerospace Service Bulletin SB.29-31-01339A, Revision 1, dated July 
8, 1993. -
    (c) 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, 
FAA, Transport Airplane Directorate. 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: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Standardization Branch, ANM-113.

    -(d) Special flight permits may be issued in accordance with 
Federal Aviation Regulations (FAR) 21.197 and 21.199 to operate the 
airplane to a location where the requirements of this AD can be 
accomplished. -
    (e) The replacement shall be done in accordance with British 
Aerospace Service Bulletin SB.29-31-01339A, Revision 1, dated July 
8, 1993, which includes the following list of effective pages: -

------------------------------------------------------------------------
                                 Revision                               
            Page               level shown        Date shown on page    
                                 on page                                
------------------------------------------------------------------------
1-..........................  1-...........  July 8, 1993.              
2-11........................  Original.....  (These pages are not       
                                              dated).                   
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This incorporation by reference is approved by the Director of the 
Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 
51. The incorporation by reference of British Aerospace Service 
Bulletin SB.29-31-01339A, dated May 24, 1993, was approved 
previously by the Director of the Federal Register in accordance 
with 5 U.S.C. 552(a) and 1 CFR Part 51 as of January 20, 1994 (58 FR 
67310, December 21, 1993). Copies may be obtained from British 
Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, 
Dulles International Airport, Washington, DC 20041-0414. Copies may 
be inspected at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue, SW., Renton, Washington; or at the Office of the Federal 
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
    (f) This amendment becomes effective on October 11, 1994.

    Issued in Renton, Washington, on August 16, 1994.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 94-21966 Filed 9-8-94; 8:45 am]
BILLING CODE 4910-13-U