AD 2001-11-08

[Federal Register Volume 66, Number 112 (Monday, June 11, 2001)]
[Rules and Regulations]
[Pages 31131-31135]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 01-13999]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 99-NM-350-AD; Amendment 39-12250; AD 2001-11-08]
RIN 2120-AA64


Airworthiness Directives; Boeing Model 747-400, 747-400F, 757-
200, 757-200CB, 757-200PF, 767-200, 767-300, and 767-300F 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 certain Boeing Model 747-400, 757-200, 767-200, and 
767-300 series airplanes, that currently requires repetitive checks to 
detect certain failures in the warning electronic unit (WEU) or modular 
avionic warning electronic assembly (MAWEA); repetitive tests to detect 
any failure of tactile, visual, or aural alerts generated by the WEU or 
MAWEA; and corrective action, if necessary. This amendment makes these 
requirements applicable to other airplanes on which the defective power 
supplies may be installed, eliminates the repetitive tests for certain 
airplanes, and increases the interval for the repetitive tests for 
certain other airplanes. This amendment also requires replacing any 
subject power supply in the WEU or MAWEA with a new, modified, or 
serviceable power supply. The actions specified by this AD are intended 
to prevent failure of the WEU or MAWEA power supplies, which could 
result in loss of visual, aural, and tactile alerts to the flightcrew. 
Absence of such alerts could result in the flightcrew being unaware 
that an immediate or appropriate action should be taken in the event of 
an unsafe condition.

DATES: Effective July 16, 2001.
    The incorporation by reference of certain publications, as listed 
in the regulations, is approved by the Director of the Federal Register 
as of July 16, 2001.
    The incorporation by reference of certain other publications, as 
listed in the regulations, was approved previously by the Director of 
the Federal Register as of September 16, 1999 (64 FR 47653, September 
1, 1999).

ADDRESSES: The service information referenced in this AD may be 
obtained from Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, 
Washington 98124-2207. 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: Sheila I. Mariano, Aerospace Engineer, 
Systems and Equipment Branch, ANM-130S, FAA, Seattle Aircraft 
Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98055-
4056; telephone (425) 227-2675; fax (425) 227-1181.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal

[[Page 31132]]

Aviation Regulations (14 CFR part 39) by superseding AD 99-18-16, 
amendment 39-11282 (64 FR 47653, September 1, 1999), applicable to 
certain Boeing Model 747-400, 757-200, 767-200, and 767-300 series 
airplanes, was published in the Federal Register on June 15, 2000 (65 
FR 37494). That action proposed to continue to require the actions 
specified in AD 99-18-16, and to add a terminating action for the 
repetitive checks and tests. That action also proposed to make those 
requirements applicable to other airplanes on which the defective power 
supplies may be installed, eliminate the repetitive tests for certain 
airplanes, and increase the interval for the repetitive tests for 
certain other airplanes. Additionally, that action also proposed to 
require replacement of any subject power supply in the WEU or MAWEA 
with a new, modified, or serviceable power supply. That action was 
prompted by a report of a MAWEA power supply failure due to inadequate 
over-voltage protection.

Comments

    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. Due consideration has been given to 
the comments received.

Support for the Proposed AD

    One commenter supports the actions specified by the proposed AD. 
Four other commenters state that they are either not affected by the 
proposed AD or are in compliance with the proposed actions.

Request To Withdraw the Proposed AD

    One commenter states that the FAA should determine the number of 
power supply modules, part number (P/N) 285T0035-201, currently 
installed on airplanes. If the subject power supply module is found, 
the FAA should require a fleet check for part numbers and serial 
numbers before requiring fleetwide preflight checks. If the 
manufacturer of the subject part (Boeing) could identify which serial 
numbers were produced and identify the units that have been modified by 
July 2000, there may be no need to issue an AD. The FAA infers that the 
commenter is requesting that the proposed AD be withdrawn.
    The FAA does not concur that the proposed AD should be withdrawn. 
The applicability of this AD limits the requirements to only certain 
airplanes on which the affected P/N is installed. Airplanes not 
included in the applicability are not subject to preflight checks or 
the requirements of this AD. Issuance of this AD is necessary to 
require U.S. operators of airplanes with the affected P/N installed to 
accomplish the required actions.

Request To Clarify the Terminating Action

    One commenter requests that the FAA clarify the terminating action 
required by the proposed AD. The commenter states that the intent of 
the proposed AD is to replace all power supplies, P/N 285T0035-201, 
found on certain Model 747, 757, and 767 series airplanes and those 
power supplies in stock. After such replacement, no further repetitive 
checks are required. However, the proposed AD does not provide clear 
direction to the terminating action. Paragraphs (a) and (b) of the 
proposed AD require ``test and replacement'' action per paragraph (c) 
or (f). If the action in paragraph (c) or (f) is terminated, operators 
are not required to do the action required by paragraph (d) or (e), 
which specify repetitive checks (for Model 747-400 and -400F series 
airplanes not listed in paragraph (a)) and repetitive checks and 
functional tests (for Model 757 and 767 series airplanes not listed in 
paragraph (b)). The operator states that, even though it has replaced 
the subject power supplies, the proposed AD still requires the 
repetitive checks (as specified in paragraph (d) of the proposed AD), 
and the repetitive checks and functional tests (as specified in 
paragraph (e) of the proposed AD). This creates an unintended burden on 
operators.
    The FAA clarifies that the actions required by paragraphs (a), (b), 
and (c) of this AD in the section, ``Partial Restatement of 
Requirements of AD 99-18-16,'' are included for operators that have not 
already replaced the power supplies. For those operators, the checks 
and functional tests, as well as the corrective actions, continue to be 
required by this new AD. The replacement action was not required by AD 
99-18-16. However, this new AD requires replacement of any subject 
power supplies within 1 year after the effective date of this AD, as 
the terminating action. Paragraphs (c)(1), (c)(2), and (c)(3) of this 
AD, clearly state that replacement of the subject power supplies 
constitutes terminating action for the requirements of this AD. In 
addition, we point out that the actions required by paragraphs (d) and 
(e) of this AD only apply to airplanes not subject to the requirements 
of paragraphs (a) and (b). Paragraphs (d) and (e) both specify that 
replacement action terminates the repetitive checks and tests specified 
by this AD. The FAA has revised paragraph (f) of this final rule to 
clarify that such replacement terminates ``the requirements of this 
AD,'' rather than ``the repetitive inspection requirements of this 
AD.''

Request To Add an Inspection Requirement

    One commenter requests an inspection of the power supply module to 
identify the P/N installed at the next ``A'' check or 45 days (after 
the effective date of this AD), whichever occurs earlier, and 
repetitive inspections if subject P/N 285T0035-201 is found. The 
commenter contends that the first action in paragraphs (d) and (e) of 
the proposed AD is to check the status page of the EICAS for any MAWEA 
or WEU failures, which assumes that the subject P/N is installed. 
However, the FAA should clarify those paragraphs to specify that 
operators first must determine if a subject P/N is installed at the 
next ``A'' check or 45 days (after the effective date of this AD), 
whichever occurs first. If a subject P/N is found, then the proposed AD 
should require repetitive checks (as specified in paragraphs (d) and 
(e) of the proposed AD). The commenter adds that there is no assurance 
that the subject P/N has not been subsequently installed on an airplane 
that was modified per AD 99-18-16.
    The FAA does not concur with the commenter's request to require an 
additional inspection to determine if a subject P/N is installed. The 
applicability statement and certain paragraphs of this AD limit the 
required actions to only certain airplanes equipped with either a WEU 
or MAWEA power supply having P/N 28T0035-201. Some operators should be 
able to review their maintenance log books to determine if the subject 
P/N has been replaced. Therefore, it is not necessary to add an 
inspection in paragraphs (d) and (e) of this AD to determine if a 
subject power supply is installed.
    Also, the repetitive checks required by paragraphs (d) and (e) of 
this AD are limited to only certain airplanes equipped with either a 
WEU or MAWEA power supply having P/N 285T0035-201, other than those 
airplanes identified in paragraph (a) or (b) of this AD. We have 
revised paragraphs (d) and (e) of this AD accordingly to clarify any 
confusion.
    We do not agree that operators may have inadvertently installed the 
subject P/N on a previously modified airplane. We point out that, for 
airplanes subject to AD 99-18-16, paragraph (g) of that AD specifies 
that no person shall install a WEU or MAWEA power supply having P/N 
285T0035-201 on any

[[Page 31133]]

airplane as of the effective date of that AD, as specified in paragraph 
(g)(1) of this AD. Therefore, no change to this AD is necessary in this 
regard.

Requests To Correct a Paragraph Reference

    Two commenters request changing a paragraph reference in paragraphs 
(d)(1) and (e)(1) of the proposed AD. The commenters state that the 
correct paragraph reference for the terminating action required by the 
proposed AD is paragraph (f) instead of paragraph (e). The FAA concurs 
with this request and has changed the final rule accordingly.

Conclusion

    After careful review of the available data, including the comments 
noted above, the FAA has determined that air safety and the public 
interest require the adoption of the rule with the changes previously 
described. The FAA has determined that these changes will neither 
increase the economic burden on any operator nor increase the scope of 
the AD.

Cost Impact

    There are approximately 1,592 Model 747-400, 747-400F, 757-200, 
757-200CB, 757-200PF, 767-200, 767-300, and 767-300F series airplanes 
of the affected design in the worldwide fleet. The FAA estimates that 
802 airplanes of U.S. registry will be affected by this AD.
    The repetitive checks and tests required by AD 99-18-16 are 
currently applicable to approximately 33 U.S.-registered airplanes. The 
repetitive checks and tests take approximately 1 work hour per airplane 
to accomplish, at an average labor rate of $60 per work hour. Based on 
these figures, the cost impact of the currently required checks and 
tests on U.S. operators is estimated to be $1,980, or $60 per airplane, 
per check/test cycle. Because this AD eliminates the currently required 
repetitive tests for certain airplanes, and increases the repetitive 
interval for the tests for certain other airplanes, this AD reduces the 
costs to operators currently subject to AD 99-18-16.
    The repetitive checks and tests in this new action are applicable 
to approximately 769 additional airplanes. Based on the figures 
discussed above, the new costs to U.S. operators for the repetitive 
checks and tests imposed by this AD are estimated to be $46,140, or $60 
per airplane, per check/test cycle.
    For all airplanes subject to this AD, the new replacement action 
required by this AD takes approximately 3 work hours per airplane to 
accomplish, at an average labor rate of $60 per work hour. Required 
parts cost approximately $6,424 per airplane. Based on these figures, 
the cost impact of the replacement required by this AD on U.S. 
operators is estimated to be $5,296,408, or $6,604 per airplane.
    The cost impact figures discussed above are 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 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 adopted herein will 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 final rule does not have federalism 
implications under Executive Order 13132.
    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. 106(g), 40113, 44701.


Sec. 39.13  [Amended]

    2. Section 39.13 is amended by removing 39-11282 (64 FR 47653, 
September 1, 1999), and by adding a new airworthiness directive (AD), 
amendment 39-12250, to read as follows:

2001-11-08  Boeing: Amendment 39-12250. Docket 99-NM-350-AD. 
Supersedes AD 99-18-16, Amendment 39-11282.

    Applicability: Model 747-400, 747-400F, 757-200, 757-200CB, 757-
200PF, 767-200, 767-300, and 767-300F series airplanes; equipped 
with either a warning electronics unit (WEU) or a modular avionics 
warning electronic assembly (MAWEA) power supply having part number 
(P/N) 285T0035-201; 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 (h)(1) 
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 failure of the WEU or MAWEA power supplies, which 
could result in loss of visual, aural, and tactile alerts to the 
flightcrew (the absence of which could result in the flightcrew 
being unaware that an immediate or appropriate action should be 
taken in the event of an unsafe condition), accomplish the 
following:

Partial Restatement of Requirements of AD 99-18-16

Model 747-400 Series Airplanes: EICAS Status Page Checks

    (a) For Model 747-400 and 747-400F series airplanes having line 
number (L/N) 1121 through 1177 inclusive: Within 15 days after 
September 16, 1999 (the effective date of AD 99-18-16, amendment 39-
11282), check the status page of the engine indication and crew 
alerting system (EICAS) for any MAWEA failure. Thereafter, repeat 
the EICAS status page check before each flight until the 
requirements of paragraph (c) or (f) of this AD have been 
accomplished.

Model 757-200, 767-200, and 767-300 Series Airplanes: Checks and 
Functional Tests

    (b) For Model 757-200, -200CB, and -200PF series airplanes 
having L/N 761 through 828 inclusive; and Model 767-200, -300, and -
300F series airplanes having L/N 668 through 723 inclusive: Within 
15 days after September 16, 1999, check the status page of the EICAS 
for any WEU failure; and perform the Work Instructions in Section 3,

[[Page 31134]]

Part 1, of Boeing Service Bulletin 757-31-0066, Revision 1, dated 
December 17, 1998, or Revision 2, dated November 18, 1999 (for Model 
757-200, -200CB, and -200PF series airplanes); or Boeing Service 
Bulletin 767-31-0106, Revision 1, dated December 17, 1998, or 
Revision 2, dated November 18, 1999 (for Model 767-200, 767-300, and 
767-300F series airplanes); as applicable; to detect loss of any 
visual, aural, or tactile alert. Thereafter, repeat the EICAS status 
page check before each flight, and the Work Instructions in Section 
3, Part 1, of the applicable service bulletin at intervals not to 
exceed every ``A'' check or 45 days, whichever occurs first, until 
the requirements of paragraph (c) or (f) of this AD have been 
accomplished. After the effective date of this AD, only Revision 2 
of the applicable service bulletin shall be used.

Corrective Action

    (c) If any failure of the MAWEA or WEU, as applicable, or the 
loss of any visual, aural, or tactile alert is detected during any 
test required by either paragraph (a) or (b) of this AD, prior to 
further flight, accomplish paragraph (c)(1), (c)(2), or (c)(3) of 
this AD; as applicable.
    (1) For Model 747-400 or -400F series airplanes equipped with a 
MAWEA power supply having P/N 285T0035-201: Replace the power 
supplies of the MAWEA with new or modified power supplies having P/N 
285T0035-202 Mod A, in accordance with either Boeing Service 
Bulletin 747-31-2288, dated December 17, 1998, or Revision 1, dated 
January 28, 1999; or with new, modified, or serviceable power 
supplies having P/N 285T0035-202 Mod A, P/N 285T0035-10, or P/N 
285T0035-11, in accordance with Boeing Service Bulletin 747-31-2288, 
Revision 2, dated November 18, 1999. Such replacement constitutes 
terminating action for the requirements of this AD. After the 
effective date of this AD, only Revision 2 of the applicable service 
bulletin shall be used.

    Note 2: Page 59 of Boeing Service Bulletin 747-31-2288, Revision 
1, dated January 28, 1999, incorrectly references the Boeing 767 AMM 
as the appropriate source of service information for accomplishment 
of the removal and installation of the power supply. However, the 
correct reference is the Boeing 747 AMM.

    (2) For Model 757-200, -200CB, and -200PF series airplanes 
equipped with a MAWEA power supply having P/N 285T0035-201: Replace 
the power supplies of the WEU with new or modified power supplies 
having P/N 285T0035-202 Mod A, in accordance with Boeing Service 
Bulletin 757-31-0066, Revision 1, dated December 17, 1998; or with 
new, modified, or serviceable power supplies having P/N 285T0035-202 
Mod A, P/N 285T0035-9, P/N 285T0035-10, or P/N 285T0035-11, in 
accordance with Boeing Special Attention Service Bulletin 757-31-
0066, Revision 2, dated November 18, 1999. Such replacement 
constitutes terminating action for the requirements of this AD. 
After the effective date of this AD, only Revision 2 of the service 
bulletin shall be used.
    (3) For Model 767-200, -300, and -300F series airplanes: Replace 
the power supplies of the WEU with new or modified power supplies 
having P/N 285T0035-202 Mod A, in accordance with Boeing Service 
Bulletin 767-31-0106, Revision 1, dated December 17, 1998; or with 
new, modified, or serviceable power supplies having P/N 285T0035-202 
Mod A, P/N 285T0035-9, P/N 285T0035-10, or P/N 285T0035-11, in 
accordance with Boeing Special Attention Service Bulletin 767-31-
0106, Revision 2, dated November 18, 1999. Such replacement 
constitutes terminating action for the requirements of this AD. 
After the effective date of this AD, only Revision 2 of the 
applicable service bulletin shall be used.

New Requirements of This AD

    Note 3: Boeing Component Service Bulletin 285T0035-31-07, dated 
December 17, 1998, describes procedures for modifying WEU or MAWEA 
power supplies having P/N 28T0035-201 to 285T0035-202 Mod A.

Repetitive Checks: Model 747-400 and -400F

    (d) For Model 747-400 and -400F series airplanes equipped with a 
MAWEA power supply having P/N 28T0035-201, other than those 
airplanes identified in paragraph (a) of this AD: At the next ``A'' 
check or within 45 days, whichever occurs first, check the status 
page of the EICAS for any MAWEA failure.
    (1) If no MAWEA failure is detected: Thereafter, repeat the 
EICAS status page check before each flight, until the requirements 
of paragraph (f) of this AD are accomplished.
    (2) If any MAWEA failure is detected: Prior to further flight, 
replace MAWEA power supplies having P/N 285T0035-201 with new or 
modified power supplies having P/N 285T0035-202 Mod A, or new, 
modified, or serviceable power supplies having P/N 285T0035-10 or P/
N 285T0035-11; in accordance with Boeing Service Bulletin 747-31-
2288, Revision 2, dated November 18, 1999. Such replacement 
constitutes terminating action for the requirements of this AD.

Repetitive Checks and Functional Tests: Model 757 and 767

    (e) For Model 757-200, 757-200CB, 757-200PF, 767-200, 767-300, 
and 767-300F series airplanes equipped with a WEU power supply 
having P/N 28T0035-201, other than those airplanes identified in 
paragraph (b) of this AD: At the next ``A'' check or within 45 days, 
whichever occurs first, check the status page of the EICAS for any 
WEU failure; and perform the Work Instructions in Section 3, Part 1, 
of Boeing Special Attention Service Bulletin 757-31-0066, Revision 
2, dated November 18, 1999; or Boeing Special Attention Service 
Bulletin 767-31-0106, Revision 2, dated November 18, 1999; as 
applicable; to detect loss of any visual, aural, or tactile alert.
    (1) If no failure of the WEU or loss of any visual, aural, or 
tactile alert is detected: Thereafter, repeat the EICAS status page 
check before each flight, and accomplish the Work Instructions in 
Section 3, Part 1 of the applicable service bulletin at intervals 
not to exceed every ``A'' check or 45 days, whichever occurs first, 
until the requirements of paragraph (f) of this AD are accomplished.
    (2) If any failure of the WEU or loss of any visual, aural, or 
tactile alert is detected: Prior to further flight, replace WEU 
power supplies having P/N 285T0035-201, with new or modified power 
supplies having P/N 285T0035-202 Mod A; or new, modified, or 
serviceable power supplies having P/N 285T0035-9, P/N 285T0035-10, 
or P/N 285T0035-11; in accordance with the applicable service 
bulletin. Such replacement constitutes terminating action for the 
requirements of this AD.

Replacement

    (f) Within 1 year after the effective date of this AD, replace 
WEU or MAWEA power supplies having P/N 285T0035-201, with new or 
modified power supplies having P/N 285T0035-202 Mod A; or new, 
modified, or serviceable power supplies having P/N 285T0035-9, P/N 
285T0035-10, or P/N 285T0035-11; in accordance with Boeing Service 
Bulletin 747-31-2288, dated December 17, 1998, Revision 1, dated 
January 28, 1999, or Revision 2, dated November 18, 1999 (for Model 
747-400 and 747-400F series airplanes); Boeing Service Bulletin 757-
31-0066, Revision 1, dated December 17, 1998, or Revision 2, dated 
November 18, 1999 (for Model 757-200, 757-200CB, and 757-200PF 
series airplanes); or Boeing Service Bulletin 767-31-0106, Revision 
1, dated December 17, 1998, or Revision 2, dated November 18, 1999 
(for Model 767-200, 767-300, and 767-300F series airplanes); as 
applicable. After the effective date of this AD, only Revision 2 of 
the applicable service bulletin shall be used. Such replacement 
constitutes terminating action for the requirements of this AD.

Spares

    (g) As of the date specified in paragraph (g)(1) or (g)(2) of 
this AD, as applicable, no person shall install a WEU or MAWEA power 
supply having Boeing P/N 285T0035-201 on any airplane.
    (1) For Model 747-400 series airplanes, line numbers 1121 
through 1177 inclusive; Model 757-200, -200CB, and -200PF series 
airplanes, line numbers 761 through 828 inclusive; and Model 767-
200, 767-300, and -300F series airplanes, line numbers 668 through 
723 inclusive: As of September 16, 1999 (the effective date of AD 
99-18-16, amendment 39-11282).
    (2) For airplanes other than those identified in paragraph 
(g)(1) of this AD: As of the effective date of this AD.

Alternative Methods of Compliance

    (h)(1) 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, Seattle Aircraft Certification 
Office (ACO), FAA. Operators shall submit their requests through an 
appropriate FAA Principal Avionics Inspector, who may add comments 
and then send it to the Manager, Seattle ACO.
    (2) Alternative methods of compliance, approved previously by 
the FAA in accordance with AD 99-18-16, amendment 39-11282, are 
approved as alternative methods of compliance with this AD.

    Note 4: Information concerning the existence of approved 
alternative methods of

[[Page 31135]]

compliance with this AD, if any, may be obtained from the Seattle 
ACO.

Special Flight Permits

    (i) 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.

Incorporation by Reference

    (j) Except for the EICAS status page checks required by 
paragraphs (a), (b), (d), (d)(1), (e), and (e)(1) of this AD, the 
actions shall be done in accordance with Boeing Service Bulletin 
747-31-2288, dated December 17, 1998; Boeing Service Bulletin 747-
31-2288, Revision 1, dated January 28, 1999; Boeing Service Bulletin 
747-31-2288, Revision 2, including Appendix A, dated November 18, 
1999; Boeing Service Bulletin 757-31-0066, Revision 1, dated 
December 17, 1998; Boeing Special Attention Service Bulletin 757-31-
0066, Revision 2, including Appendix A, dated November 18, 1999; 
Boeing Service Bulletin 767-31-0106, Revision 1, dated December 17, 
1998; or Boeing Special Attention Service Bulletin 767-31-0106, 
Revision 2, including Appendix A, dated November 18, 1999; as 
applicable.
    (1) The incorporation by reference of Boeing Service Bulletin 
747-31-2288, Revision 2, including Appendix A, dated November 18, 
1999; Boeing Special Attention Service Bulletin 757-31-0066, 
Revision 2, including Appendix A, dated November 18, 1999; and 
Boeing Special Attention Service Bulletin 767-31-0106, Revision 2, 
including Appendix A, dated November 18, 1999; is approved by the 
Director of the Federal Register in accordance with 5 U.S.C. 552(a) 
and 1 CFR part 51.
    (2) The incorporation by reference of Boeing Service Bulletin 
747-31-2288, dated December 17, 1998; Boeing Service Bulletin 747-
31-2288, Revision 1, dated January 28, 1999; Boeing Service Bulletin 
757-31-0066, Revision 1, dated December 17, 1998; and Boeing Service 
Bulletin 767-31-0106, Revision 1, dated December 17, 1998; was 
approved previously by the Director of the Federal Register as of 
September 16, 1999 (64 FR 47653, September 1, 1999).
    (3) Copies may be obtained from Boeing Commercial Airplane 
Group, P.O. Box 3707, Seattle, Washington 98124-2207. 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.

Effective Date

    (k) This amendment becomes effective on July 16, 2001.

    Issued in Renton, Washington, on May 25, 2001.
Vi L. Lipski,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 01-13999 Filed 6-8-01; 8:45 am]
BILLING CODE 4910-13-U