[Federal Register Volume 68, Number 131 (Wednesday, July 9, 2003)]
[Proposed Rules]
[Pages 40823-40827]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 03-17317]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2003-NM-91-AD]
RIN 2120-AA64


Airworthiness Directives; Various Boeing and McDonnell Douglas 
Transport Category Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: This document proposes to revise an existing airworthiness 
directive (AD), applicable to various Boeing and McDonnell Douglas 
transport category airplanes, that currently requires revising the 
Airplane Flight Manual (AFM) to advise the flightcrew to don oxygen 
masks as a first and immediate step when the cabin altitude warning 
horn sounds. The actions specified by that AD are intended to prevent 
incapacitation of the flightcrew due to lack of oxygen, which could 
result in loss of control of the airplane. This action would remove 
certain requirements for certain airplanes and revises the direction to 
the flightcrew to don oxygen masks as a first and immediate step when 
the cabin altitude warning occurs, rather than ``when the cabin 
altitude warning horn sounds.'' This action is intended to address the 
identified unsafe condition.

DATES: Comments must be received by August 25, 2003.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, ANM-114, 
Attention: Rules Docket No. 2003-NM-91-AD, 1601 Lind Avenue, SW., 
Renton, Washington 98055-4056. Comments may be inspected at this 
location between 9 a.m. and 3 p.m., Monday through Friday, except 
Federal holidays. Comments may be submitted via fax to (425) 227-1232. 
Comments may also be sent via the Internet using the following address: 
[email protected]. Comments sent via fax or the Internet must 
contain ``Docket No. 2003-NM-91-AD'' in the subject line and need not 
be submitted in triplicate. Comments sent via the Internet as attached 
electronic files must be formatted in Microsoft Word 97 or 2000 or 
ASCII text.
    This information may be examined at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, 
Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, 
Lakewood, California.

FOR FURTHER INFORMATION CONTACT: Boeing Airplane Models: Don Eiford, 
Aerospace Engineer, Systems and Equipment Branch, ANM-130S, FAA, 
Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, 
Washington 98055-4056; telephone (425) 917-6465; fax (425) 917-6590.
    McDonnell Douglas Airplane Models: Joe Hashemi, Aerospace Engineer, 
Flight Test Branch, ANM-160L, FAA, Los Angeles Aircraft Certification 
Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; 
telephone (562) 627-5380; fax (562) 627-5210.

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

[[Page 40824]]

proposed rule. The proposals contained in this action may be changed in 
light of the comments received.
    Submit comments using the following format:
    [sbull] Organize comments issue-by-issue. For example, discuss a 
request to change the compliance time and a request to change the 
service bulletin reference as two separate issues.
    [sbull] For each issue, state what specific change to the proposed 
AD is being requested.
    [sbull] Include justification (e.g., reasons or data) for each 
request.
    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 action must submit a self-addressed, 
stamped postcard on which the following statement is made: ``Comments 
to Docket Number 2003-NM-91-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-114, Attention: Rules 
Docket No. 2003-NM-91-AD, 1601 Lind Avenue, SW., Renton, Washington 
98055-4056.

Discussion

    On January 24, 2003, the FAA issued AD 2003-03-15, amendment 39-
13039 (68 FR 4892, January 31, 2003), applicable to various Boeing and 
McDonnell Douglas transport category airplanes, to require revising the 
Airplane Flight Manual (AFM) to advise the flightcrew to don oxygen 
masks as a first and immediate step when the cabin altitude warning 
horn sounds. The requirements of that AD are intended to prevent 
incapacitation of the flightcrew due to lack of oxygen, which could 
result in loss of control of the airplane.

Actions Since Issuance of Existing Rule

    Since the issuance of that AD, the manufacturer has provided data 
to the FAA substantiating that, for the McDonnell Douglas airplanes 
specified in AD 2003-15-03, the positive pressure created with the 
``Emergency'' setting of the oxygen masks during rapid decompression 
events is unnecessary. The ``Emergency'' setting of the oxygen masks 
would require the flightcrew to do pressure breathing, which makes it 
difficult for the flightcrew to communicate or concentrate.
    In addition, the manufacturer also requested that the words ``If 
the cabin altitude warning occurs'' be used for the McDonnell Douglas 
airplanes specified in AD 2003-15-03 instead of the words currently 
used, ``If the cabin altitude warning horn sounds.'' The manufacturer 
advised that not all McDonnell Douglas airplanes specified in AD 2003-
15-03 are equipped with cabin altitude warning horns.
    Advising the flightcrew to don oxygen masks as a first and 
immediate step when the cabin altitude warning occurs is necessary to 
prevent incapacitation of the flightcrew due to lack of oxygen, which 
could result in loss of control of the airplane.

Explanation of Requirements of Proposed Rule

    Since an unsafe condition has been identified that is likely to 
exist or develop on other products of this same type design, the 
proposed AD would revise AD 2003-03-15 to remove reference to the word 
``Emergency'' when specifying ``Crew Oxygen Mask--ON/100%,'' for all 
the McDonnell Douglas airplanes specified in that AD.
    Additionally, the proposed AD would revise AD 2003-03-15 to specify 
that, for all McDonnell Douglas airplanes, the words ``If the cabin 
altitude warning occurs'' be used rather than the words, ``If the cabin 
altitude warning horn sounds.''

Editorial Changes

    An alternative method of compliance (AMOC) was issued for AD 2003-
03-15 on March 12, 2003, for certain McDonnell Douglas airplanes. That 
AMOC specified the wording ``for the AD requirement for oxygen masks to 
be immediately donned as the first crew action in the event of a rapid 
`decompression.' '' However, Figures 4, 5, 6, and 8 in that AMOC 
specify the wording ``Cabin Altitude Warning or Rapid 
Depressurization.'' Although AD 2003-03-15 uses the wording 
decompression in Figures 5, 6, and 7, the FAA has changed that wording 
in this NPRM to read ``depressurization'' for Figures 5, 6, and 7 of 
this proposed rule. For the purposes of this AD, we consider that there 
is no distinction between the meaning of depressurization and the 
meaning of decompression. The FAA considers that changing the wording 
in those Figures will more clearly align with the ``pressurization'' 
wording used in the AMOC issued on March 12, 2003. Additionally, such 
standardization of the term ``pressurization'' used in the Figures 
specified for McDonnell Douglas airplanes should assist operators by 
clarifying the requirements of this proposed AD.

Changes to 14 CFR Part 39/Effect on the Proposed AD

    On July 10, 2002, the FAA issued a new version of 14 CFR part 39 
(67 FR 47997, July 22, 2002), which governs the FAA's airworthiness 
directives system. The regulation now includes material that relates to 
altered products, special flight permits, and alternative methods of 
compliance (AMOC). Because we have now included this material in part 
39, we no longer need to include it in each individual AD. However, 
this proposed AD identifies the office authorized to issue AMOCs.

Cost Impact

    There are approximately 6,956 airplanes (5,179 Boeing airplanes and 
1,777 McDonnell Douglas airplanes) of the affected design in the 
worldwide fleet. The FAA estimates that 3,601 airplanes (2,392 Boeing 
airplanes and 1,209 McDonnell Douglas airplanes) of U.S. registry would 
be affected by this proposed AD, that it would take approximately 1 
work hour per airplane to accomplish the proposed actions, and that the 
average labor rate is $60 per work hour. Based on these figures, the 
cost impact of the proposed AD on U.S. operators is estimated to be 
$216,060, or $60 per airplane.
    The cost impact figure discussed above is based on assumptions that 
no operator has yet accomplished any of the proposed requirements of 
this AD action, and that no operator would accomplish those actions in 
the future if this AD were not adopted. The cost impact figures 
discussed in AD rulemaking actions represent only the time necessary to 
perform the specific actions actually required by the AD. These figures 
typically do not include incidental costs, such as the time required to 
gain access and close up, planning time, or time necessitated by other 
administrative actions.

Regulatory Impact

    The regulations proposed herein would not have a substantial direct 
effect 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, it 
is determined that this proposal

[[Page 40825]]

would not have federalism implications under Executive Order 13132.
    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 39-13039 (68 FR 
4892, January 31, 2003), and by adding a new airworthiness directive 
(AD), to read as follows:

Transport Category Airplanes: Docket 2003-NM-91-AD. Revises AD 2003-
03-15, Amendment 39-13039.

    Applicability: The airplanes listed in Table 1 of this AD, 
certificated in any category:

                   Table 1.--Affected Airplane Models
------------------------------------------------------------------------
       Airplane  manufacturer                   Airplane model
------------------------------------------------------------------------
Boeing..............................  707 series airplanes.
                                      720 series airplanes.
                                      727 series airplanes.
                                      737-100 series airplanes.
                                      737-200 series airplanes.
                                      737-200C series airplanes.
                                      737-300 series airplanes.
                                      737-400 series airplanes.
                                      737-500 series airplanes.
                                      747-100 series airplanes.
                                      747-100B series airplanes.
                                      747-100B SUD series airplanes.
                                      747-200B series airplanes.
                                      747-200F series airplanes.
                                      747-200C series airplanes.
                                      747-300 series airplanes.
                                      747SR series airplanes.
                                      747SP series airplanes.
 
McDonnell Douglas...................  DC-8-11 airplanes.
                                      DC-8-12 airplanes.
                                      DC-8-21 airplanes.
                                      DC-8-31 airplanes.
                                      DC-8-32 airplanes.
                                      DC-8-33 airplanes.
                                      DC-8-41 airplanes.
                                      DC-8-42 airplanes.
                                      DC-8-43 airplanes.
                                      DC-8-51 airplanes.
                                      DC-8-52 airplanes.
                                      DC-8-53 airplanes.
                                      DC-8F-54 airplanes.
                                      DC-8-55 airplanes.
                                      DC-8F-55 airplanes.
                                      DC-8-61 airplanes.
                                      DC-8-61F airplanes.
                                      DC-8-62 airplanes.
                                      DC-8-62F airplanes.
                                      DC-8-63 airplanes.
                                      DC-8-63F airplanes.
                                      DC-8-71 airplanes.
                                      DC-8-71F airplanes.
                                      DC-8-72 airplanes.
                                      DC-8-72F airplanes.
                                      DC-8-73 airplanes.
                                      DC-8-73F airplanes.
                                      DC-9-11 airplanes.
                                      DC-9-12 airplanes.
                                      DC-9-13 airplanes.
                                      DC-9-14 airplanes.
                                      DC-9-15 airplanes.
                                      DC-9-15F airplanes.
                                      DC-9-21 airplanes.
                                      DC-9-31 airplanes.
                                      DC-9-32 airplanes.
                                      DC-9-32 (VC-9C) airplanes.
                                      DC-9-32F airplanes.
                                      DC-9-32F (C-9A, C-9B) airplanes.
                                      DC-9-33F airplanes.
                                      DC-9-34 airplanes.
                                      DC-9-34F airplanes.
                                      DC-9-41airplanes.
                                      DC-9-51 airplanes.
                                      DC-9-81 (MD-81) airplanes.
                                      DC-9-82 (MD-82) airplanes.
                                      DC-9-83 (MD-83) airplanes.
                                      DC-9-87 (MD-87) airplanes.
                                      MD-88 airplanes.
                                      MD-90-30 airplanes.
                                      DC-10-10 airplanes.
                                      DC-10-10F airplanes.
                                      DC-10-15 airplanes.
                                      DC-10-30 airplanes.
                                      DC-10-30F airplanes.
                                      DC-10-30F (KC-10A, KDC-10)
                                       airplanes.
                                      DC-10-40 airplanes.
                                      DC-10-40F airplanes.
                                      MD-10-10F airplanes.
                                      MD-10-30F airplanes.
                                      MD-11 airplanes.
                                      MD-11F airplanes.
------------------------------------------------------------------------

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent incapacitation of the flightcrew due to lack of 
oxygen, which could result in loss of control of the airplane, 
accomplish the following:

Revision to the Airplane Flight Manual

    (a) Within 90 days after the effective date of this AD: For the 
applicable airplane models listed in the ``For--'' column of Table 2 
of this AD, revise the procedures regarding donning oxygen masks in 
the event of rapid depressurization, as contained in the Emergency 
Procedures section of the FAA-approved Airplane Flight Manual (AFM), 
by replacing the text in the ``Replace--'' column of Table 2 of this 
AD with the information in the applicable figure referenced in the 
``With the Information In--'' column of Table 2 of this AD. This may 
be accomplished by recording the AD number of this AD on the 
applicable figure and inserting it into the AFM. Table 2 and Figures 
1 through 9 follow:

                                             Table 2.--AFM Revisions
----------------------------------------------------------------------------------------------------------------
                                                                                            With the Information
               For--                                       Replace--                                in--
----------------------------------------------------------------------------------------------------------------
Boeing Model 707, 720, and 727       ``RAPID DEPRESSURIZATION............................  Figure 1 of this AD.
 series airplanes.                   Oxygen Masks & Regulators--ON, 100% ALL''...........
------------------------------------
Boeing Model 737-100, -200, and -    ``RAPID DEPRESSURIZATION (With airplane altitude      Figure 2 of this AD.
 200C series airplanes.               above 14,000 feet M.S.L.).
                                     PRIMARY.............................................
                                     Oxygen Masks & Regulators--ON, 100%''...............
------------------------------------

[[Page 40826]]

 
Boeing Model 737-300, 737-400, 737-  ``RAPID DEPRESSURIZATION (With airplane altitude      Figure 3 of this AD.
 500, 747-100, 747-100B, 747-100B     above 14,000 feet M.S.L.).
 SUD, 747-200B, 747-200F, 747-200C,  RECALL..............................................
 747-300, 747SR, and 747SP series    Oxygen Masks & Regulators--ON, 100%''...............
 airplanes.
------------------------------------
McDonnell Figure 5 of Douglas Model  ``RAPID DECOMPRESSION/EMERGENCY DESCENT.............  Figure 5 of this AD.
 DC-9-11, DC-9-12, DC-9-13, DC-9-    Phase I and II......................................
 14, DC-9-15, DC-9-15F, DC-9-21, DC- Manual Pressurization Control.......................
 9-31, DC-9-32, DC-9-32 (VC-9C), DC- FULL FORWARD AND MANUALLY LOCKED....................
 9-32F, DC-9-32F (C-9A, C-9B), DC-9- Note: Manual Pressurization control forces may be
 33F, DC-9-34, DC-9-34F, DC-9-41,     high, apply forces as required.
 and DC-9-51 airplanes.              Crew Oxygen Masks--ON''.............................
------------------------------------
McDonnell Douglas Model DC-9-81 (MD- ``RAPID DECOMPRESSION/EMERGENCY DESCENT.............  Figure 6 of this AD.
 81), DC-9-82 (MD-82), DC-9-83 (MD-  Phase I and II......................................
 83), DC-9-87 (MD-87), MD-88         Manual Pressurization Control--FULL FORWARD AND
 airplanes.                           MANUALLY LOCKED.
                                     Note: Manual Pressurization control forces may be
                                      high, apply forces as required.
                                     Crew Oxygen Masks--ON/EMERGENCY/100%''..............
------------------------------------
McDonnell Douglas Model MD-90-30     ``RAPID DECOMPRESSION...............................  Figure 7 of this AD.
 airplanes.                          OXY MASKS--ON/100%/EMERGENCY''......................
------------------------------------
McDonnell Douglas DC-10-10, DC-10-   ``RAPID DEPRESSURIZATION/EMERGENCY DESCENT..........  Figure 8 of this AD.
 10F, DC-10-15, DC-10-30, DC-10-     Recall..............................................
 30F, DC-10-30F (KC-10A, KDC-10),    Cabin OUTFLOW VALVE --VERIFY CLOSED (CLOSE
 DC-10-40, and DC-10-40F airplanes.   ELECTRICALLY OR MANUALLY IF NOT CLOSED).
                                     Oxygen Masks --100% (if required)''.................
------------------------------------
McDonnell Douglas MD-10-10F, MD-10-  ``CABIN ALTITUDE....................................  Figure 9 of this AD.
 30F, MD-11, and MD-11F airplanes.   Memory Item.........................................
                                     Outflow Valve--Verify Closed''......................
------------------------------------
----------------------------------------------------------------------------------------------------------------

Figure 1

For Boeing Model 707, 720, and 727 Series Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION
If the cabin altitude warning horn sounds:

Oxygen Masks & Regulators.................  ON, 100%, ALL''
 

    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 2

For Boeing Model 737-100, -200, and -200C Series Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION
If the cabin altitude warning horn sounds:
PRIMARY

Oxygen Masks & Regulators.................  ON, 100%''
 

    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 3

For Boeing Model 737-300, 737-400, 737-500, 747-100, 747-100B, 747-
100B SUD, 747-200B, 747-200F, 747-200C, 747-300, 747SR, and 747SP 
Series Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION
If the cabin altitude warning horn sounds:
RECALL

Oxygen Masks & Regulators.................  ON, 100%''
 

    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 4

For McDonnell Douglas Model DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-
8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8-51, DC-8-52, DC-8-
53, DC-8F-54, DC-8-55, DC-8F-55, DC-8-61, DC-8-61F, DC-8-62, DC-8-
62F, DC-8-63, DC-8-63F, DC-8-71, DC-8-71F, DC-8-72, DC-8-72F, DC-8-
73, and DC-8-73F Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING/RAPID DEPRESSURIZATION
Phase I and II
If the cabin altitude warning occurs:

Crew oxygen mask &........................  ON/100%''
 

    The rest of the steps under this heading in the AFM are 
unchanged.

[[Page 40827]]

Figure 5

For McDonnell Douglas Model DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-
9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-
32F, DC-9-32F (C-9A, C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, 
and DC-9-51 Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING/RAPID DEPRESSURIZATION/EMERGENCY DESCENT
Phase I and II
If a cabin altitude warning occurs:

Crew Oxygen Masks.........................  ON/100%
Manual Pressurization Control.............  FULL FORWARD AND MANUALLY
                                             LOCKED
 


    Note: Manual Pressurization control forces may be high, apply 
forces as required.''

    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 6

For McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-
83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING/RAPID DEPRESSURIZATION/EMERGENCY DESCENT
Phase I and II
If the cabin altitude warning occurs:

Crew Oxygen Mask..........................  ON/100%
Manual Pressurization Control.............  FULL FORWARD AND MANUALLY
                                             LOCKED
 


    Note: Manual Pressurization control forces may be high, apply 
forces as required.''

    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 7

For McDonnell Douglas MD-90-30 Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION
If the cabin altitude warning occurs:

OXY MASKS.................................  ON/100%''
 

    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 8

For McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-
30, DC-10-30F, DC-10-30F (KC-10A, KDC-10), DC-10-40, and DC-10-40F 
Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION/EMERGENCY DESCENT
Recall
If the cabin altitude warning occurs:

Oxygen Masks..............................  ON/100%
Cabin
OUTFLOW VALVE.............................  VERIFY CLOSED (CLOSE
                                             ELECTRICALLY OR MANUALLY IF
                                             NOT CLOSED)''
 

                                             The rest of the steps under 
                                                                 t
                                                                 h
                                                                 i
                                                                 s
                                                                  
                                                                 h
                                                                 e
                                                                 a
                                                                 d
                                                                 i
                                                                 n
                                                                 g
                                                                  
                                                                 i
                                                                 n
                                                                  
                                                                 t
                                                                 h
                                                                 e
                                                                  
                                                                 A
                                                                 F
                                                                 M
                                                                  
                                                                 a
                                                                 r
                                                                 e
                                                                  
                                                                 u
                                                                 n
                                                                 c
                                                                 h
                                                                 a
                                                                 n
                                                                 g
                                                                 e
                                                                 d
                                                                 .
    The rest of the steps under this heading in the AFM are 
unchanged.

Figure 9

For McDonnell Douglas Model MD-10-10F, MD-10-30F, MD-11, and MD-11F 
Airplanes:

    Insert the information in this figure into the ``Emergency 
Procedures'' section of the FAA-approved Airplane Flight Manual.

``CABIN ALTITUDE WARNING OR CABIN ALTITUDE
If the cabin altitude warning occurs:

                              Memory Item
Oxygen Masks..............................  ON/100%
Outflow Valve.............................  Verify Closed''
 

    The rest of the steps under this heading in the AFM are 
unchanged.

Alternative Methods of Compliance

    (b) In accordance with 14 CFR 39.19, the Manager, Seattle 
Aircraft Certification Office (ACO), FAA, or the Manager, Los 
Angeles ACO, FAA, is authorized to approve alternative methods of 
compliance for this AD.

    Issued in Renton, Washington, on July 1, 2003.
Vi L. Lipski,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 03-17317 Filed 7-8-03; 8:45 am]
BILLING CODE 4910-13-P