[Federal Register: September 29, 2004 (Volume 69, Number 188)]
[Proposed Rules]
[Page 58103-58107]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr29se04-23]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2004-19201; Directorate Identifier 2003-NM-100-AD]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 767-200, -300, and -300F
Series Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to supersede an existing airworthiness
directive (AD) for all Boeing Model 767-200, -300, and -300F series
airplanes. That AD currently requires examination of maintenance
records to determine if Titanine JC5A (also known as Desoto 823E508)
corrosion inhibiting compound (``C.I.C.'') was ever used; inspection
for cracks or corrosion and corrective action, if applicable;
repetitive inspections and C.I.C. applications; and modification of the
aft trunnion area of the outer cylinder, which terminates the need for
the repetitive inspections and C.I.C. applications. This proposed AD
would also require, for certain other airplanes, repetitive inspections
for cracks or corrosion, corrective action if necessary, and repetitive
C.I.C. applications. This proposed AD is prompted by a report that JC5A
was used on more airplanes during production than previously
identified. We are proposing this AD to prevent severe corrosion in the
main landing gear (MLG) outer cylinder at the aft trunnion, which could
develop into stress corrosion cracking and consequent collapse of the
MLG.
DATES: We must receive comments on this proposed AD by November 15,
2004.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
DOT Docket Web Site: Go to http://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide Rulemaking Web Site: Go to http://www.regulations.gov
and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility; U.S. Department of
Transportation, 400 Seventh Street SW., Nassif Building, room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street SW., Washington, DC, between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-
2207.
You can examine the contents of this AD docket on the Internet at
http://dms.dot.gov, or at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street SW., room PL-401, on
the plaza level of the Nassif Building, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Technical information: Suzanne
Masterson, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle
Aircraft Certification Office, 1601 Lind Avenue, SW., Renton,
Washington 98055-4056; telephone (425) 917-6441; fax (425) 917-6590.
Plain language information: Marcia Walters, marcia.walters@faa.gov.
SUPPLEMENTARY INFORMATION:
Docket Management System (DMS)
The FAA has implemented new procedures for maintaining AD dockets
electronically. As of May 17, 2004, new AD actions are posted on DMS
and assigned a docket number. We track each action and assign a
corresponding directorate identifier. The DMS AD docket number is in
the form ``Docket No. FAA-2004-99999.'' The Transport Airplane
Directorate identifier is in the form ``Directorate Identifier 2004-NM-
999-AD.'' Each DMS AD docket also lists the directorate identifier
(``Old Docket Number'') as a cross-reference for searching purposes.
Comments Invited
We invite you to submit any relevant written data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed under ADDRESSES. Include ``Docket No. FAA-2004-19201;
Directorate Identifier 2003-NM-100-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of those comments.
We will post all comments we receive, without change, to http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this proposed AD. Using the search function of our
docket Web site, anyone can find and read the comments in any of our
dockets, including the name of the individual who sent the comment (or
signed the comment on behalf of an association, business, labor union,
etc.). You can review the DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
can visit http://dms.dot.gov.
We are reviewing the writing style we currently use in regulatory
documents. We are interested in your comments on whether the style of
this document is clear, and your suggestions to improve
[[Page 58104]]
the clarity of our communications that affect you. You can get more
information about plain language at http://www.faa.gov/language and
http://www.plainlanguage.gov.
Examining the Docket
You can examine the AD docket on the Internet at http://dms.dot.gov
, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the DOT
street address stated in the ADDRESSES section. Comments will be
available in the AD docket shortly after the DMS receives them.
Discussion
On April 11, 2002, we issued AD 2002-08-07, amendment 39-12715 (67
FR 19322, April 19, 2002), for all Boeing Model 767-200, -300, and -
300F series airplanes. That AD requires examination of maintenance
records to determine if Titanine JC5A (also known as Desoto 823E508,
and hereafter collectively referred to as JC5A) corrosion inhibiting
compound (``C.I.C.'') was ever used; inspection for cracks or corrosion
and corrective action, if applicable; repetitive inspections and C.I.C.
applications; and modification of the aft trunnion area of the outer
cylinder, which terminates the need for the repetitive inspections and
C.I.C. applications. That AD was prompted by reports of an approved
C.I.C. causing severe corrosion in the MLG at the outer cylinder aft
trunnion on Boeing Model 767 series airplanes. We issued that AD to
prevent severe corrosion in the MLG outer cylinder at the aft trunnion,
which could develop into stress corrosion cracking and consequent
collapse of the MLG.
Actions Since Existing AD Was Issued
Since we issued AD 2002-08-07, we have determined that the
identified unsafe condition (i.e., corrosion in the aft trunnion caused
by the use of JC5A, a C.I.C. that deteriorates over time and degrades
primer and cadmium plating when it comes into contact with moisture)
addressed in that AD could still exist on 15 Model 767-200, -300, and -
300F series airplanes of U.S. registry (within the group of line
numbers (L/N) 834 through 874 inclusive). We have been advised that
JC5A was used on more airplanes during production than those previously
identified in the original issue of Boeing Alert Service Bulletin 767-
32A0192. Based on previous information and the records examination
required by AD 2002-08-07, an operator could have incorrectly
determined that JC5A had not been used on certain airplanes and
consequently not corrected the unsafe condition. Therefore, we have
determined that these airplanes are subject to the inspections, C.I.C
applications, and modification required by AD 2002-08-07.
Relevant Service Information
We have reviewed Boeing Alert Service Bulletin 767-32A0192,
Revision 1, dated March 13, 2003. The procedures specified in Revision
1 of the service bulletin are essentially the same as the procedures
specified in the original issue of the service bulletin, as cited in AD
2002-08-07. Revision 1 of the service bulletin identifies affected
airplanes, L/Ns 834 through 874, as assembled new with JC5A in the
outer cylinder aft trunnion. Accomplishing the actions specified in the
service information is intended to adequately address the unsafe
condition.
FAA's Determination and Requirements of the Proposed AD
We have evaluated all pertinent information and identified an
unsafe condition that is likely to exist or develop on other products
of this same type design. Therefore, we are proposing this AD, which
would supersede AD 2002-08-07. This proposed AD would continue to
require, for certain airplanes, examination of maintenance records to
determine if JC5A C.I.C. was ever used; inspection for cracks or
corrosion and corrective action, if applicable; repetitive inspections
and C.I.C. applications; and modification of the aft trunnion area of
the outer cylinder, which terminates the need for the repetitive
inspections and C.I.C. applications. This proposed AD would also
require, for certain other airplanes, repetitive inspections for cracks
or corrosion, corrective action if necessary, and repetitive C.I.C.
applications. This proposed AD would require you to use the service
information described previously to perform these actions except as
discussed under ``Differences Between the Proposed AD and the Service
Bulletins.''
Differences Between the Proposed AD and the Service Bulletins
Operators should note that, although the Accomplishment
Instructions of the referenced service bulletins require reporting all
corrosion found in the aft trunnions of certain airplanes, this
proposed AD would not require that action.
Change to Existing AD
This proposed AD would retain all requirements of AD 2002-08-07.
Since AD 2002-08-07 was issued, the AD format has been revised, and
certain paragraphs have been rearranged. As a result, the corresponding
paragraph identifiers have changed in this proposed AD, as listed in
the following table:
Revised Paragraph Identifiers
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Corresponding requirement
Requirement in AD 2002-08-07 in this proposed AD
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Paragraph (a)............................. Paragraph (g).
Paragraph (b)............................. Paragraph (h).
Paragraph (c)............................. Paragraph (i).
Paragraph (d)............................. Paragraph (j).
Paragraph (e)............................. Paragraph (k).
Paragraph (f)............................. Paragraph (l).
Paragraph (g)............................. Paragraph (m).
Paragraph (h)............................. Paragraph (n).
Paragraph (i)............................. Paragraph (q).
Paragraph (j)............................. Paragraph (r).
Paragraph (k)............................. Paragraph (o).
Paragraph (l)............................. Paragraph (p).
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We have also changed all references to the ambiguous time of
``years ago'' in paragraphs (j)(2), (j)(3), (k)(2)(i)(A), (k)(2)(i)(B),
and (m)(2) of this proposed AD to ``years before May 6, 2002.''
Costs of Compliance
There are about 848 airplanes of the affected design in the
worldwide fleet. This proposed AD would affect about 357 airplanes of
U.S. registry. The new requirements of this proposed AD add no
additional economic burden for operators affected by AD 2002-08-07. The
current costs for this AD are repeated for the convenience of affected
operators, as follows:
Estimated Costs
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Average
Action Work labor rate Parts Cost per airplane Fleet cost
hours per hour
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C.I.C. Application............... 1 $65 (\1\) $65, per application $23,205 per
cycle. application cycle.
[[Page 58105]]
Cross Bolt Hole Inspection-- 2 65 (\1\) 130................. 46,410.
Bushings Removed.
Restoration for Bushings Removed. 6 65 (\1\) 390................. 139,230.
Cross Bolt Inner Chamfer 2 65 (\1\) 130, per inspection 46,410, per
Inspection--Bushings Not Removed. cycle. inspection cycle.
Restoration for Bushings Not 6 65 (\1\) 390................. 139,230.
Removed.
Terminating Action............... 64 65 6,356 10,581.............. 3,777,417.
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\1\ None.
Regulatory Findings
We have determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD 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.
For the reasons discussed above, I certify that the 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. 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD. See the ADDRESSES section for a location
to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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. The FAA amends Sec. 39.13 by removing amendment 39-12715 (67 FR
19322, April 19, 2002) and adding the following new airworthiness
directive (AD):
Boeing: Docket No. FAA-2004-19201; Directorate Identifier 2003-NM-
100-AD.
Comments Due Date
(a) The Federal Aviation Administration must receive comments on
this airworthiness directive (AD) action by November 15, 2004.
Affected ADs
(b) This AD supersedes AD 2002-08-07, amendment 39-12715 (67 FR
19322, April 19, 2002).
Applicability: (c) This AD applies to all Boeing Model 767-200,
-300, and -300F series airplanes, certificated in any category.
Unsafe Condition
(d) This AD was prompted by a report that Titanine JC5A (also
known as Desoto 823E508) was used on more airplanes during
production than previously identified. We are issuing this AD to
prevent severe corrosion in the main landing gear (MLG) outer
cylinder at the aft trunnion, which could develop into stress
corrosion cracking and consequent collapse of the MLG.
Compliance: (e) You are responsible for having the actions
required by this AD performed within the compliance times specified,
unless the actions have already been done.
Requirements of AD 2002-08-07, Amendment 39-9783: Line Numbers (L/N) 1
Through 833 Inclusive, and 875 and Subsequent
(f) For airplanes with L/Ns 1 through 833 inclusive, and 875 and
subsequent:
Do the actions specified in paragraphs (g) through (q) of this
AD, as applicable.
Records Examination
(g) Within 90 days after May 6, 2002 (the effective date of AD
2002-08-07, amendment 39-9783), examine airplane records to
determine if Titanine JC5A or Desoto 823E508 (hereafter collectively
referred to as ``JC5A'') corrosion inhibiting compound (``C.I.C.'')
was used in the aft trunnion area of the MLG outer cylinder during
general maintenance, overhaul, or incorporation of Boeing Alert
Service Bulletin 767-32A0148, dated December 21, 1995; Revision 1,
dated October 10, 1996 (required by paragraph (e) of AD 96-21-06,
amendment 39-9783); or Revision 2, dated November 30, 2000; in
accordance with Boeing Alert Service Bulletin 767-32A0192, dated May
31, 2001; or Revision 1, dated March 13, 2003. If records do not
show conclusively which compound was used, assume JC5A was used.
Refer to Boeing Alert Service Bulletin 767-32A0192, dated May 31,
2001, for the line numbers of airplanes that were assembled new
using JC5A.
Note 1:
Prior to January 31, 2001, if BMS 3-27 was ordered from Boeing,
Boeing shipped JC5A as a substitute.
MLGs on Which JC5A Was Not Used
(h) Except as provided by paragraph (p) (``Use of JC5A
Prohibited'') of this AD, if, according to the criteria of paragraph
(g) of this AD, JC5A was never used, no further action is required
by this AD.
C.I.C. Applications, Inspections, and Corrective Actions if Necessary
(i) For Category 1 MLG outer cylinders as identified in Boeing
Alert Service Bulletin 767-32A0192, dated May 31, 2001: If,
according to the criteria of paragraph (g) of this AD, JC5A may have
been used, perform the actions specified in both paragraphs (j) and
(k) of this AD, as applicable, in accordance with Boeing Alert
Service Bulletin 767-32A0192, dated May 31, 2001; or Revision 1,
dated March 13, 2003.
(j) For MLGs and MLG outer cylinders identified in paragraphs
(j)(1), (j)(2), and (j)(3) of this AD: Within 90 days after May 6,
2002, perform the C.I.C. application on the MLG in accordance with
``Part 3--C.I.C. Application'' of the Accomplishment Instructions of
Boeing Alert Service Bulletin 767-32A0192, dated May 31, 2001; or
Revision 1, dated March 13, 2003. Thereafter, repeat at intervals
not to exceed 180 days until the terminating action required by
paragraph (q) of this AD has been accomplished.
(1) MLG outer cylinders that are less than 3 years old since
new.
(2) MLGs that have been overhauled less than 3 years before May
6, 2002.
(3) MLGs on which rework per Boeing Alert Service Bulletin 767-
32A0148, dated December 21, 1995; Revision 1, dated October 10,
1996; or Revision 2, dated November 30, 2000, was accomplished less
than 3 years before May 6, 2002.
(k) Before the MLG outer cylinder is 3 years old since new,
since last overhaul, or since rework per Boeing Alert Service
Bulletin 767-32A0148, dated December 21, 1995; Revision 1, dated
October 10, 1996; or
[[Page 58106]]
Revision 2, dated November 30, 2000; or within 90 days after May 6,
2002; whichever is later; perform a detailed inspection for cracks
and corrosion of the cross bolt bushing holes and chamfers in
accordance with ``Part 1--Cross Bolt Hole Inspection--Bushings
Removed'' of the Accomplishment Instructions of Boeing Alert Service
Bulletin 767-32A0192, dated May 31, 2001; or Revision 1, dated March
13, 2003.
Note 2:
For the purposes of this AD, a detailed inspection is defined
as: ``An intensive examination of a specific item, installation, or
assembly to detect damage, failure, or irregularity. Available
lighting is normally supplemented with a direct source of good
lighting at an intensity deemed appropriate. Inspection aids such as
mirror, magnifying lenses, etc., may be necessary. Surface cleaning
and elaborate procedures may be required.''
(1) If no crack or corrosion is found during the detailed
inspection required by paragraph (k) of this AD, perform the actions
in paragraphs (k)(1)(i), (k)(1)(ii), and (k)(1)(iii) of this AD, at
the applicable times indicated.
(i) Before further flight, perform the restoration steps shown
in Figure 2 of the service bulletin; and thereafter at intervals not
to exceed 180 days, perform the C.I.C. application on the landing
gear in accordance with ``Part 3--C.I.C. Application'' of the
Accomplishment Instructions of the service bulletin.
(ii) Within 18 months after performing the detailed inspection
required by paragraph (k) of this AD, and thereafter at intervals
not to exceed 18 months, perform the detailed inspection for cracks
and corrosion of the cross bolt hole inner chamfer, in accordance
with ``Part 2--Cross Bolt Hole Inner Chamfer Inspection--Bushings
Not Removed'' of the Accomplishment Instructions of the service
bulletin, until the terminating action required by paragraph (q) of
this AD has been accomplished.
(iii) Before the MLG cylinder is 6\1/2\ years old since new,
since last overhaul, or since rework per Boeing Alert Service
Bulletin 767-32A0148, dated December 21, 1995; Revision 1, dated
October 10, 1996; or Revision 2, dated November 30, 2000; whichever
is later; perform the terminating action described in paragraph (q)
of this AD.
(2) If any corrosion is found on the cross bolt holes or outer
chamfers during the detailed inspection required by paragraph (k) of
this AD, before further flight, remove the corrosion per Figure 2 of
the service bulletin.
(i) If all of the corrosion can be removed: Before further
flight, perform the restoration steps shown in Figure 2 of the
service bulletin; thereafter at intervals not to exceed 180 days,
perform the C.I.C. application on the MLG in accordance with ``Part
3--C.I.C. Application'' of the Accomplishment Instructions of the
service bulletin; and perform the terminating action described in
paragraph (q) of this AD, at the applicable time specified in
paragraph (k)(2)(i)(A) or (k)(2)(i)(B) of this AD.
(A) If the MLG outer cylinder is less than 5 years old since
new, if the MLG was last overhauled less than 5 years before May 6,
2002, or if rework per Boeing Alert Service Bulletin 767-32A0148,
dated December 21, 1995; Revision 1, dated October 10, 1996; or
Revision 2, dated November 30, 2000; was accomplished less than 5
years before May 6, 2002: Within 18 months after performing the
detailed inspection required by paragraph (k) of this AD.
(B) If the MLG outer cylinder is 5 years old or more since new,
if the MLG was last overhauled 5 years or more before May 6, 2002,
or if rework per Boeing Alert Service Bulletin 767-32A0148, dated
December 21, 1995; Revision 1, dated October 10, 1996; or Revision
2, dated November 30, 2000; was accomplished 5 years or more before
May 6, 2002: Before the MLG outer cylinder is 6\1/2\ years old since
new, since last overhaul, or since rework per Boeing Alert Service
Bulletin 767-32A0148, dated December 21, 1995; Revision 1, dated
October 10, 1996; or Revision 2, dated November 30, 2000; whichever
is later.
(ii) If any corrosion cannot be removed, before further flight,
perform the terminating action described in paragraph (q) of this
AD.
(3) If any crack is found anywhere during the detailed
inspection required in paragraph (k) of this AD, or if corrosion in
the inner cross bolt hole chamfers is found, before further flight,
perform the terminating action described in paragraph (q) of this
AD.
(l) For Category 2 MLG outer cylinders as identified in Boeing
Alert Service Bulletin 767-32A0192, dated May 31, 2001: If,
according to the criteria of paragraph (g) of this AD, JC5A may have
been used, perform the actions specified in both paragraphs (m) and
(n) of this AD, as applicable, in accordance with Boeing Alert
Service Bulletin 767-32A0192, dated May 31, 2001; or Revision 1,
dated March 13, 2003.
(m) For MLGs and MLG outer cylinders identified in paragraphs
(m)(1) and (m)(2) of this AD: Within 90 days after May 6, 2002,
perform the C.I.C. application on the MLG in accordance with ``Part
3--C.I.C. Application'' of the Accomplishment Instructions of Boeing
Alert Service Bulletin 767-32A0192, dated May 31, 2001; or Revision
1, dated March 13, 2003. Thereafter, repeat the application at
intervals not to exceed 180 days until the terminating action
required by paragraph (q) of this AD has been accomplished.
(1) MLG outer cylinders that are less than 3 years old since
new.
(2) MLGs that have been overhauled less than 3 years before May
6, 2002.
(n) Before the MLG outer cylinder is 3 years old since new or
since the last overhaul, or within 90 days after May 6, 2002,
whichever is later, perform a detailed inspection for cracks and
corrosion of the cross bolt hole inner chamfer, in accordance with
``Part 2--Cross Bolt Hole Inner Chamfer Inspection--Bushings Not
Removed'' of the Accomplishment Instructions of Boeing Alert Service
Bulletin 767-32A0192, dated May 31, 2001; or Revision 1, dated March
13, 2003.
(1) If no crack or corrosion is found during the inspection
required by paragraph (n) of this AD, before further flight, and
thereafter at intervals not to exceed 180 days, perform the C.I.C.
application on the MLG in accordance with ``Part 3--C.I.C.
Application'' of the Accomplishment Instructions of the service
bulletin, until the next MLG overhaul. After the next MLG overhaul
has been completed, no further action is required by this AD.
(2) If any corrosion is found during the detailed inspection
required by paragraph (n) of this AD, before further flight, remove
the cross bolt bushings and perform the detailed inspection
specified in paragraph (k) of this AD, and remove the corrosion per
Figure 2 of the service bulletin.
(i) If all of the corrosion can be removed, perform the actions
specified in paragraph (n)(2)(i)(A) and (n)(2)(i)(B) of this AD, at
the applicable times indicated.
(A) Prior to further flight, perform the restoration steps shown
in Figure 2 of the service bulletin; and thereafter at intervals not
to exceed 180 days, perform the C.I.C. application on the MLG in
accordance with ``Part 3--C.I.C. Application'' of the Accomplishment
Instructions of the service bulletin.
(B) Within 18 months after the corrosion removal required by
paragraph (n)(2) of this AD, perform the terminating action
described in paragraph (q) of this AD.
(ii) If all the corrosion cannot be removed, before further
flight, perform the terminating action required by paragraph (q) of
this AD.
(3) If any crack is found during the detailed inspection
required by paragraph (n) of this AD, before further flight, perform
the terminating action described in paragraph (q) of this AD.
Parts Installation
(o) As of May 6, 2002, no person shall install on any airplane
an MLG outer cylinder unless maintenance records conclusively show
that JC5A has never been used on that MLG outer cylinder, or unless
it complies with paragraph (q) of this AD.
Use of JC5A Prohibited
(p) As of May 6, 2002, no person shall use the C.I.C. JC5A in
the aft trunnion area of the MLG outer cylinder on any airplane.
Terminating Action
(q) Perform the terminating action (including removal of the
existing bushings, repair of the aft trunnion area of the outer
cylinder, and machining and installation of new bushings) in
accordance with ``Part 4--Terminating Action'' of the Accomplishment
Instructions of Boeing Alert Service Bulletin 767-32A0192, dated May
31, 2001; or Revision 1, dated March 13, 2003. Completion of the
terminating action terminates the requirements for the repetitive
inspections and C.I.C. applications of this AD.
Credit for Terminating Action
(r) For all airplanes, accomplishment of the actions specified
in paragraph (q) of this AD is considered acceptable for compliance
with the requirements of paragraph (e) of AD 2002-01-13, amendment
39-12607.
New Requirements of This AD: L/Ns 834 Through 874 Inclusive
(s) For airplanes with L/Ns 834 through 874 inclusive: Do the
actions specified in paragraphs (s)(1), (s)(2), and (s)(3) of this
AD.
[[Page 58107]]
(1) Within 90 days after the effective date of this AD, and
thereafter at intervals not to exceed 180 days: Do the actions
specified in paragraph (m) of this AD until the terminating action
required by paragraph (q) of this AD has been accomplished.
(2) Before the MLG outer cylinder is 3 years old since new or
since last overhaul, or within 90 days after the effective date of
this AD, whichever is later: Do the actions as specified in
paragraph (n) of this AD.
(3) As of the effective date of this AD, the actions specified
in paragraphs (o) and (p) of this AD must be complied with.
Reporting Requirement
(t) Although the service bulletins referenced in this AD specify
to submit certain information to the manufacturer, this AD does not
include such a requirement.
Alternative Methods of Compliance (AMOCs)
(u)(1) The Manager, Seattle Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
(2) An AMOC that provides an acceptable level of safety may be
used for any repair required by this AD, if it is approved by a
Boeing Company Designated Engineering Representative who has been
authorized by the Manager, Seattle ACO, to make those findings. For
a repair method to be approved, the approval must specifically refer
to this AD.
Issued in Renton, Washington, on September 20, 2004.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 04-21820 Filed 9-28-04; 8:45 am]
BILLING CODE 4910-13-P