Document ID: FAA-2011-1068-0014
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: The Boeing Co. Airplanes
Posted Date: 2016-09-26T04:00Z

[Federal Register Volume 81, Number 186 (Monday, September 26, 2016)]
[Rules and Regulations]
[Pages 65864-65872]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-21602]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-1068; Directorate Identifier 2010-NM-189-AD; 
Amendment 39-18647; AD 2016-18-16]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for all The 
Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series 
airplanes. This AD was prompted by fuel system reviews conducted by the 
manufacturer. This AD requires installing an automatic shutoff system 
for the center and auxiliary tank fuel boost pumps, as applicable; 
installing a placard in the airplane flight deck if necessary; 
replacing the P5-2 fuel system module assembly; installing the 
``uncommanded ON'' (UCO) protection system for the fuel boost pumps; 
revising the airplane flight manual (AFM) to advise the flight crew of 
certain operating restrictions for airplanes equipped with an automatic 
shutoff system; and revising the maintenance program by incorporating 
new airworthiness limitations for fuel tank systems to satisfy Special 
Federal Aviation Regulation No. 88 requirements. We are issuing this AD 
to prevent operation of the center and auxiliary tank fuel boost pumps 
with continuous low pressure, which could lead to friction sparks or 
overheating in the fuel pump inlet that could create a potential 
ignition source inside the center and auxiliary fuel tanks. These 
conditions, in combination with flammable fuel vapors, could result in 
a fuel tank explosion and consequent loss of the airplane.

DATES: This AD is effective October 31, 2016.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of October 31, 
2016.

ADDRESSES: For Boeing service information identified in this final 
rule, contact Boeing Commercial Airplanes, Attention: Data & Services 
Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone: 
206-544-5000, extension 1; fax: 206-766-5680; Internet https://www.myboeingfleet.com. For BAE Systems service information identified 
in this final rule, contact BAE Systems, Attention: Commercial Product 
Support, 600 Main Street, Room S18C, Johnson City, NY 13790-1806; 
phone: 607-770-3084; fax: 607-770-3015; email: CS-Customer.Service@baesystems.com; Internet: http://www.baesystems-ps.com/customersupport. You may view this referenced service 
information at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue SW., Renton, WA. For information on the availability of this 
material at the FAA, call 425-227-1221. It is also available on the 
Internet at http://www.regulations.gov by searching for and locating 
Docket No. FAA-2011-1068.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2011-
1068; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this AD, the regulatory evaluation, any comments received, and 
other information. The address for the Docket Office (phone: 800-647-
5527) is Docket Management Facility, U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Serj Harutunian, Aerospace Engineer, 
Propulsion Branch, ANM-140L, FAA, Los Angeles Aircraft Certification 
Office (ACO), 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 
562-627-5254; fax: 562-627-5210; email: Serj.Harutunian@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a supplemental notice of proposed rulemaking (SNPRM) to 
amend 14 CFR part 39 by adding an AD that would apply to all The Boeing 
Company Model 737-100, -200, -200C, -300, -400, and -500 series 
airplanes. The SNPRM published in the Federal Register on March 28, 
2016 (81 FR 17098) (``the SNPRM''). We preceded the SNPRM with a notice 
of proposed rulemaking (NPRM) that published in the Federal Register on 
October 12, 2011 (76 FR 63229) (``the NPRM''). The NPRM proposed to 
require installing an automatic shutoff system for the center and 
auxiliary tank fuel boost pumps, as applicable; installing a placard in 
the airplane flight deck if necessary; replacing the P5-2 fuel system 
module assembly; installing the UCO protection system for the fuel 
boost pumps; revising the airplane flight manual to advise the flight 
crew of certain operating restrictions for airplanes equipped with an 
automatic shutoff system; and revising the maintenance program by 
incorporating new airworthiness limitations for fuel tank systems to 
satisfy Special Federal Aviation Regulation No. 88 requirements. The 
NPRM was prompted by fuel system reviews conducted by the manufacturer. 
The SNPRM proposed to require updated or additional actions for certain 
airplane configurations. We are issuing this AD to prevent operation of 
the center and auxiliary tank fuel boost pumps with continuous low 
pressure, which could lead to friction sparks or overheating in the 
fuel pump inlet that could create a potential ignition source inside 
the center and auxiliary fuel tanks. These conditions, in combination 
with flammable fuel vapors, could result in a fuel tank explosion and 
consequent loss of the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments

[[Page 65865]]

received on the SNPRM and the FAA's response to each comment. Boeing 
concurred with the SNPRM.

Grouping Clarification for Airplanes With Removed Airstairs

    Phillippe Akot Azougo, ASLF, reported on a discussion with Boeing 
regarding the applicable airplane group for an airplane from which the 
airstair has been removed. Boeing indicated that if all of the support 
structure is not removed, the airplane is considered in the group with 
airstairs. Based on this comment, there is no need to change this final 
rule regarding this issue.

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing stated that the installation of winglets 
per Supplemental Type Certificate (STC) ST01219SE does not affect the 
accomplishment of the manufacturer's service instructions.
    We agree with the commenter that STC ST01219SE does not affect the 
accomplishment of the manufacturer's service instructions. Therefore, 
the installation of STC ST01219SE does not affect the ability to 
accomplish the actions required by this AD. We have not changed this AD 
in this regard.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this AD as proposed, except for minor editorial changes. We have 
determined that these minor changes:
     Are consistent with the intent that was proposed in the 
SNPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the SNPRM.

We also determined that these changes will not increase the economic 
burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    We reviewed the following service information:
    The following describe procedures for replacing the P5-2 fuel 
system module assembly for Model 737-100, -200, -200C, -300, -400, and 
-500 airplanes.
     Boeing Alert Service Bulletin 737-28A1210, dated August 2, 
2010.
     Boeing Service Bulletin 737-28A1210, Revision 1, dated May 
13, 2011.
     Boeing Service Bulletin 737-28A1210, Revision 2, dated 
October 25, 2012.
    The following describe procedures for installing an automatic 
shutoff system for the center and auxiliary fuel tank boost pumps for 
Model 737-300, -400, and -500 airplanes.
     Boeing Alert Service Bulletin 737-28A1216, dated July 29, 
2010.
     Boeing Service Bulletin 737-28A1216, Revision 1, dated 
March 26, 2012.
     Boeing Service Bulletin 737-28A1216, Revision 2, dated 
November 12, 2012.
     Boeing Service Bulletin 737-28A1216, Revision 3, dated 
July 16, 2014.
    The following describe procedures for installing a UCO protection 
system for the center and auxiliary fuel boost pumps for Model 737-100, 
-200, -200C, -300, -400, and -500 airplanes.
     Boeing Alert Service Bulletin 737-28A1227, dated August 2, 
2010.
     Boeing Alert Service Bulletin 737-28A1227, Revision 1, 
dated July 18, 2011.
     Boeing Service Bulletin 737-28A1227, Revision 2, dated 
September 23, 2014.
    The following describe procedures for installing an automatic 
shutoff system for the center and auxiliary fuel tank boost pumps for 
Model 737-100, -200, and -200C airplanes.
     Boeing Alert Service Bulletin 737-28A1228, dated August 2, 
2010.
     Boeing Alert Service Bulletin 737-28A1228, Revision 1, 
dated June 28, 2012.
     Boeing 737-100/200/200C/300/400/500 Airworthiness 
Limitations (AWLs) and Certification Maintenance Requirements (CMRs), 
Document D6-38278-CMR, Revision June 2014, contains, among other 
requirements, AWLs 28-AWL-21, 28-AWL-22, 28-AWL-24, and 28-AWL-25 for 
Model 737-100, -200, and -200C airplanes; and AWLs 28-AWL-20, 28-AWL-
21, 28-AWL-23, and 28-AWL-24; for Model 737-300, -400, and -500 
airplanes. These AWLs provide airworthiness limitation instructions for 
an operational check of the installed automatic shutoff system.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 499 airplanes of U.S. registry. We 
estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                   Labor cost          Parts cost       Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Install auto shutoff protection   Between 92 and 155  Between $10,792     Between $18,612     Between $1,526,184
 for Model 737-100, -200, -200C    work-hours x $85    and $15,548 \1\.    and $28,723 \1\.    and $2,355,286
 airplanes (82 airplanes).         per hours =                                                 \1\.
                                   Between $7,820
                                   and $13,175 \1\.
Install auto shutoff protection   Between 92 and 152  Between $9,869 and  Between $17,689     Between $7,376,313
 for Model 737-300, -400, and -    work-hours x $85    $16,236 \1\.        and $29,156 \1\.    and $12,158,052
 500 airplanes (417 airplanes).    per hours =                                                 \1\.
                                   Between $7,820
                                   and $12,920 \1\.
Install P5-2 module (499          1 work-hour x $85   $0................  $85...............  $42,415.
 airplanes).                       per hour = $85.
Install UCO protection (499       Between 38 and 67   Between $3,742 and  Between $6,972 and  Between $3,479,028
 airplanes).                       work-hours x $85    $4,861 \1\.         $10,556 \1\.        and $5,267,444
                                   per hours =                                                 \1\.
                                   Between $3,230
                                   and $5,695 \1\.
Revise airplane flight manual     1 work-hour x $85   $0................  $85...............  $42,415
 (499 airplanes).                  per hour = $85.
Revise maintenance program (499   1 work-hour x $85   $0................  $85...............  $42,415
 airplanes).                       per hour = $85.
----------------------------------------------------------------------------------------------------------------
\1\ Depending on group.

[[Page 65866]]

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD 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.
    For the reasons discussed above, I certify that this AD:
    (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),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) 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.

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2016-18-16 The Boeing Company: Amendment 39-18647; Docket No. FAA-
2011-1068; Directorate Identifier 2010-NM-189-AD.

(a) Effective Date

    This AD is effective October 31, 2016.

(b) Affected ADs

    Certain requirements of this AD terminate certain requirements 
of AD 2001-08-24, Amendment 39-12201 (66 FR 20733, April 25, 2001) 
(``AD 2001-08-24'').

(c) Applicability

    This AD affects all The Boeing Company Model 737-100, -200, -
200C, -300, -400, and -500 series airplanes; certificated in any 
category.

(d) Subject

    Air Transport Association (ATA) of America Code 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by fuel system reviews conducted by the 
manufacturer. We are issuing this AD to prevent operation of the 
center and auxiliary tank fuel boost pumps with continuous low 
pressure, which could lead to friction sparks or overheating in the 
fuel pump inlet that could create a potential ignition source inside 
the center and auxiliary fuel tanks. These conditions, in 
combination with flammable fuel vapors, could result in a fuel tank 
explosion and consequent loss of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Installation of Automatic Shutoff System for the Center and 
Auxiliary Tank Fuel Boost Pumps

    Within 36 months after the effective date of this AD, do the 
applicable actions specified in paragraph (g)(1), (g)(2), or (g)(3) 
of this AD. If a placard has been previously installed on an 
airplane, in accordance with the requirements of paragraph (i) of 
this AD, the placard may be removed from the flight deck of only 
that airplane after the automatic shutoff system has been installed, 
as specified in paragraph (g)(1), (g)(2), or (g)(3) of this AD, as 
applicable.
    (1) For Model 737-100, -200, and -200C series airplanes in 
Groups 2 through 19, as identified in Boeing Alert Service Bulletin 
737-28A1228, Revision 1, dated June 28, 2012: Install the automatic 
shutoff system for the center and auxiliary fuel tank boost pumps, 
as applicable, in accordance with the Accomplishment Instructions of 
Boeing Alert Service Bulletin 737-28A1228, Revision 1, dated June 
28, 2012. For airplanes that do not have airstairs, accomplishment 
of the actions specified in Boeing Alert Service Bulletin 737-
28A1228, dated August 2, 2010, is acceptable for compliance with the 
requirements of this paragraph, provided markers are installed on 
the J2802 Box for ``POS 1'' and ``POS 2'' within 90 days after the 
effective date of this AD, in accordance with Boeing Alert Service 
Bulletin 737-28A1228, Revision 1, dated June 28, 2012.
    (2) For Model 737-100, -200, and -200C series airplanes in Group 
1, as identified in Boeing Alert Service Bulletin 737-28A1228, 
Revision 1, dated June 28, 2012: Install the automatic shutoff 
system for the center and auxiliary fuel tank boost pumps, as 
applicable, using a method approved in accordance with the 
procedures specified in paragraph (r) of this AD.
    (3) For Model 737-300, -400, and -500 series airplanes in Groups 
1 through 31, as identified in Boeing Service Bulletin 737-28A1216, 
Revision 3, dated July 16, 2014: Install the automatic shutoff 
system for the center and auxiliary fuel tank boost pumps, as 
applicable, in accordance with the Accomplishment Instructions of 
Boeing Service Bulletin 737-28A1216, Revision 3, dated July 16, 
2014. For airplanes that do not have airstairs: Accomplishment of 
the actions specified in Boeing Alert Service Bulletin 737-28A1216, 
dated July 29, 2010, is acceptable for compliance with the 
requirements of this paragraph, provided markers are installed on 
the J2802 Box for ``POS 1'' and ``POS 2'' within 90 days after the 
effective date of this AD, in accordance with Boeing Alert Service 
Bulletin 737-28A1216, Revision 1, dated March 26, 2012; or Boeing 
Service Bulletin 737-28A1216, Revision 2, dated November 12, 2012.

(h) Concurrent Installation of P5-2 Fuel System Module Assembly

    Before or concurrently with accomplishment of the actions 
required by paragraph (g) of this AD, do the actions specified in 
paragraph (h)(1) or (h)(2) of this AD, as applicable. Accomplishment 
of the actions specified in Boeing Alert Service Bulletin 737-
28A1210, dated August 2, 2010; or Boeing Service Bulletin 737-
28A1210, Revision 1, dated May 13, 2011; is acceptable for 
compliance with the requirements of paragraph (h)(1) of this AD, 
provided that for any original P5-2 fuel system module P/N 69-37335-
129 installed that has been reworked as specified in BAE Systems 
Service Bulletin 69-37335-28-04, Revision 2, dated February 10, 
2010, the (P/N) marking is etched/scribed or labeled as P/N 69-
37335-2129, within 90 days after the effective date of this AD.
    (1) For airplanes in Group 2, as identified in Boeing Service 
Bulletin 737-28A1210, Revision 2, dated October 25, 2012: Replace 
the P5-2 fuel system module assembly with a modified or new P5-2 
fuel system module assembly having a new part number, in accordance 
with Boeing Service Bulletin 737-28A1210, Revision 2, dated October 
25, 2012.

    Note 1 to paragraph (h)(1) of this AD:  Boeing Service Bulletin 
737-28A1210, Revision 2, dated October 25, 2012, refers to BAE 
Systems Service Bulletin 69-37335-28-04 as an additional source of 
guidance for modifying and updating the existing P5-2 fuel system 
module assembly part numbers.

    (2) For airplanes in Group 1, as identified in Boeing Service 
Bulletin 737-28A1210,

[[Page 65867]]

Revision 2, dated October 25, 2012: Replace the P5-2 fuel system 
module assembly, as applicable, using a method approved in 
accordance with the procedures specified in paragraph (r) of this 
AD.

(i) Concurrent Installation of a Placard for Mixed Fleet Operation

    Concurrently with accomplishment of the actions required by 
paragraph (g) of this AD, install a placard adjacent to the pilot's 
primary flight display on all airplanes in the operator's fleet not 
equipped with an automatic shutoff system for the center and 
auxiliary tank fuel boost pumps, as applicable. The placard must 
include the statement in figure 1 to paragraph (i) of this AD. 
Optionally, the placard may include alternative text or be installed 
in a different location, or an additional placard may be installed, 
if approved by an appropriate FAA principal operations inspector. 
Installing an automatic shutoff system on an airplane, in accordance 
with the requirements of paragraph (g) of this AD, terminates the 
placard installation required by this paragraph for only that 
airplane.
[GRAPHIC] [TIFF OMITTED] TR26SE16.000

(j) Airplane Flight Manual (AFM) Revisions for Airplanes Without Boeing 
Auxiliary Fuel Tanks

    For airplanes without Boeing auxiliary fuel tanks: Concurrently 
with accomplishment of the actions required by paragraph (g) of this 
AD, do the actions specified in paragraphs (j)(1) and (j)(2) of this 
AD.
    (1) Revise Section 1 of the Limitations section of the 
applicable Boeing 737 AFM to include the statement in figure 2 to 
paragraph (j)(1) of this AD. This may be done by inserting a copy of 
this AD into the AFM. When a statement identical to that in figure 2 
to paragraph (j)(1) of this AD has been included in the general 
revisions of the applicable Boeing 737 AFM, the general revisions 
may be inserted into the AFM, and the copy of this AD may be removed 
from the AFM.
[GRAPHIC] [TIFF OMITTED] TR26SE16.001

BILLING CODE 4910-13-P
    (2) Revise Section 3 of the Normal Procedures section of the 
applicable Boeing 737 AFM to include the text specified in figure 3 
to paragraph (j)(2) of this AD. This may be done by inserting a copy 
of this AD into the AFM. Alternative statements that meet the intent 
of the following requirements may be used if approved by an 
appropriate FAA principal operations inspector.

[[Page 65868]]

[GRAPHIC] [TIFF OMITTED] TR26SE16.002

BILLING CODE 4910-13-C

(k) AFM Revisions for Airplanes With Boeing Auxiliary Fuel Tanks

    For airplanes with Boeing auxiliary fuel tanks: Concurrently 
with accomplishment of the actions required by paragraph (g) of this 
AD, do the actions specified in paragraphs (k)(1) and (k)(2) of this 
AD.
    (1) Revise Section 1 of the Limitations section of the 
applicable Boeing 737 AFM to include the text specified in figure 4 
to paragraph (k)(1) of this AD. This may be done by inserting a copy 
of this AD into the AFM. When a statement identical to that in 
figure 4 to paragraph (k)(1) of this AD has been included in the 
general revisions of the applicable Boeing 737 AFM, the general 
revisions may be inserted into the AFM, and the copy of this AD may 
be removed from the AFM.

[[Page 65869]]

[GRAPHIC] [TIFF OMITTED] TR26SE16.003

BILLING CODE 4910-13-P
    (2) Revise Section 3 of the Normal Procedures section of the 
applicable Boeing 737 AFM to include the text specified in figure 5 
to paragraph (k)(2) of this AD. This may be done by inserting a copy 
of this AD into the AFM. Alternative statements that meet the intent 
of the following requirements may be used if approved by an 
appropriate FAA principal operations inspector.

[[Page 65870]]

[GRAPHIC] [TIFF OMITTED] TR26SE16.004

BILLING CODE 4910-13-C

(l) Airworthiness Limitations (AWLs) Revision for Automatic Shutoff 
System

    Concurrently with accomplishment of the actions required by 
paragraph (g) of this AD, or within 30 days after the effective date 
of this AD, whichever occurs later: Revise the maintenance program 
by incorporating the AWLs specified in paragraphs (l)(1), (l)(2), 
(l)(3), and (l)(4) of this AD, as applicable. The initial compliance 
time for the actions specified in the applicable AWLs is within 1 
year after accomplishment of the installation required by paragraph 
(g) of this AD, or within 1 year after the effective date of this 
AD, whichever occurs later.
    (1) For Model 737-100, -200, and -200C series airplanes without 
Boeing auxiliary fuel tanks installed: Incorporate AWL No. 28-AWL-21 
of Section C., Airworthiness Limitations--Systems, of Boeing 737-
100/200/200C/300/400/500 Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), Document D6-38278-
CMR, Revision June 2014.
    (2) For Model 737-100, -200, and -200C series airplanes with 
Boeing auxiliary fuel tanks installed: Incorporate AWL No. 28-AWL-21 
and AWL No. 28-AWL-22 of Section C., Airworthiness Limitations--
Systems,'' of Boeing 737-100/200/200C/300/400/500 Airworthiness 
Limitations (AWLs) and Certification Maintenance Requirements 
(CMRs), Document D6-38278-CMR, Revision June 2014.
    (3) For Model 737-300, -400, and -500 series airplanes without 
Boeing auxiliary fuel tanks installed: Incorporate AWL No. 28-AWL-20 
of Section C., Airworthiness Limitations--Systems, of Boeing 737-
100/200/200C/300/400/500 Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), Document D6-38278-
CMR, Revision June 2014.
    (4) For Model 737-300, -400, and -500 series airplanes with 
Boeing auxiliary fuel tanks installed: Incorporate AWL No. 28-AWL-20 
and AWL No. 28-AWL-21 of

[[Page 65871]]

Section C., Airworthiness Limitations--Systems, of Boeing 737-100/
200/200C/300/400/500 Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), Document D6-38278-
CMR, Revision June 2014.

(m) Installation of Un-commanded ON (UCO) Protection System

    Within 60 months after the effective date of this AD, do the 
actions required by paragraph (m)(1) or (m)(2) of this AD, as 
applicable.
    (1) For airplanes in Groups 2 through 13, as identified in 
Boeing Service Bulletin 737-28A1227, Revision 2, dated September 23, 
2014: Install the UCO protection system for the center and auxiliary 
tank fuel boost pumps, as applicable, in accordance with the 
Accomplishment Instructions of Boeing Service Bulletin 737-28A1227, 
Revision 2, dated September 23, 2014. For airplanes with enlarged 
J2802 box assembly relay cutouts to fit the body of relays R3334, 
R3336, R3338, or R3340, with BACS12HN08-10 screws for the 
installation of the relays as specified in Boeing Service Bulletin 
Information Notice 737-28A1227 IN 05: Accomplishment of the actions 
specified in Boeing Alert Service Bulletin 737-28A1227, dated August 
2, 2010; or Revision 1, dated July 18, 2011; is acceptable for 
compliance with the requirements of this paragraph, provided markers 
are installed that identify the function of the switches installed 
on the J2802 box within 90 days after the effective date of this AD, 
in accordance with figure 1 or figure 5, as applicable, of Boeing 
Service Bulletin 737-28A1227, Revision 2, dated September 23, 2014.
    (2) For airplanes in Group 1, as identified in Boeing Service 
Bulletin 737-28A1227, Revision 2, dated September 23, 2014: Install 
the UCO protection system for the center and auxiliary tank fuel 
boost pumps, as applicable, using a method approved in accordance 
with the procedures specified in paragraph (r) of this AD.

(n) AWLs Revision for UCO Protection System

    Concurrently with accomplishment of the actions required by 
paragraph (m) of this AD, or within 30 days after the effective date 
of this AD, whichever occurs later: Revise the maintenance program 
by incorporating the AWLs specified in paragraphs (n)(1), (n)(2), 
(n)(3), and (n)(4) of this AD, as applicable. The initial compliance 
time for the actions specified in applicable AWLs is within 1 year 
after accomplishment of the installation required by paragraph (m) 
of this AD, or within 1 year after the effective date of this AD, 
whichever occurs later.
    (1) For Model 737-100, -200, and -200C series airplanes without 
Boeing auxiliary fuel tanks: Incorporate AWL No. 28-AWL-24 of 
Section C., Airworthiness Limitations--Systems, of Boeing 737-100/
200/200C/300/400/500 Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), Document D6-38278-
CMR, Revision June 2014.
    (2) For Model 737-100, -200, and -200C series airplanes with 
Boeing auxiliary fuel tanks: Incorporate AWL No. 28-AWL-24 and AWL 
No. 28-AWL-25 of Section C., Airworthiness Limitations, of Boeing 
737-100/200/200C/300/400/500 Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), Document D6-38278-
CMR, Revision June 2014.
    (3) For Model 737-300, -00, and -500 series airplanes without 
Boeing auxiliary fuel tanks: Incorporate AWL No. 28-AWL-23 of 
Section C., Airworthiness Limitations--Systems, of Boeing 737-100/
200/200C/300/400/500 Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), Document D6-38278-
CMR, Revision June 2014.
    (4) For Model 737-300, -400, and -500 series airplanes with 
Boeing auxiliary fuel tanks: Incorporate AWL No. 28-AWL-23 and AWL 
No. 28-AWL-24 of Section C, ``Fuel Systems Airworthiness 
Limitations,'' of Boeing 737-100/200/200C/300/400/500 Airworthiness 
Limitations (AWLs) and Certification Maintenance Requirements 
(CMRs), Document D6-38278-CMR, Revision June 2014.

(o) No Alternative Inspections or Inspection Intervals

    After accomplishment of the applicable actions specified in 
paragraphs (l) and (n) of this AD, no alternative inspections or 
inspection intervals may be used unless the inspections or 
inspection intervals are approved as an alternative method of 
compliance (AMOC) in accordance with the procedures specified in 
paragraph (r) of this AD.

(p) Method of Compliance for Paragraph (l) of This AD

    Incorporating AWL No. 28-AWL-21 and AWL No. 28-AWL-22 for Model 
737-100, -200, and -200C series airplanes; and AWL No. 28-AWL-20 and 
AWL No. 28-AWL-21 for Model 737-300, -400, and -500 series 
airplanes; in accordance with paragraphs (g)(1) and (g)(2) of AD 
2008-10-09 R1, Amendment 39-16148 (74 FR 69264, December 31, 2009); 
is acceptable for compliance with the corresponding AWL 
incorporation required by paragraph (l) of this AD.

(q) Method of Compliance for Paragraph (a) of AD 2001-08-24

    Accomplishment of the actions required by paragraphs (g), (h), 
(i), and (l) of this AD, and paragraph (j) or (k) of this AD as 
applicable, is an acceptable method of compliance with the 
requirements of paragraph (a) of AD 2001-08-24.

(r) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle Aircraft Certification Office (ACO), 
FAA, has the authority to approve AMOCs for this AD, if requested 
using the procedures found in 14 CFR 39.19. In accordance with 14 
CFR 39.19, send your request to your principal inspector or local 
Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the ACO, send it to the 
attention of the person identified in paragraph (s)(1) of this AD. 
Information may be emailed to 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair, modification, or alteration required by this AD 
if it is approved by the Boeing Commercial Airplanes Organization 
Designation Authorization (ODA) that has been authorized by the 
Manager, Seattle ACO, to make those findings. To be approved, the 
repair method, modification deviation, or alteration deviation must 
meet the certification basis of the airplane, and the approval must 
specifically refer to this AD.

(s) Related Information

    (1) For more information about this AD, contact Serj Harutunian, 
Aerospace Engineer, Propulsion Branch, ANM-140L, FAA, Los Angeles 
Aircraft Certification Office (ACO), 3960 Paramount Boulevard, 
Lakewood, CA 90712-4137; phone: 562-627-5254; fax: 562-627-5210; 
email: Serj.Harutunian@faa.gov.
    (2) For BAE Systems service information identified in this AD 
that is not incorporated by reference, contact BAE Systems, 
Attention: Commercial Product Support, 600 Main Street, Room S18C, 
Johnson City, NY 13790-1806; phone: 607-770-3084; fax: 607-770-3015; 
email: CS-Customer.Service@baesystems.com; Internet: http://www.baesystems-ps.com/customersupport. It is also available at the 
address specified in paragraph (t)(5) of this AD. Boeing service 
information identified in this AD that is not incorporated by 
reference is also available at the addresses specified in paragraphs 
(t)(4) and (t)(5) of this AD.

(t) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (3) The following service information was approved for IBR on 
October 31, 2016.
    (i) Boeing Alert Service Bulletin 737-28A1210, dated August 2, 
2010.
    (ii) Boeing Alert Service Bulletin 737-28A1216, dated July 29, 
2010.
    (iii) Boeing Alert Service Bulletin 737-28A1216, Revision 1, 
dated March 26, 2012.
    (iv) Boeing Alert Service Bulletin 737-28A1227, dated August 2, 
2010.
    (v) Boeing Alert Service Bulletin 737-28A1227, Revision 1, dated 
July 18, 2011.
    (vi) Boeing Alert Service Bulletin 737-28A1228, dated August 2, 
2010.
    (vii) Boeing Alert Service Bulletin 737-28A1228, Revision 1, 
dated June 28, 2012.
    (viii) Boeing Service Bulletin 737-28A1210, Revision 1, dated 
May 13, 2011.
    (ix) Boeing Service Bulletin 737-28A1210, Revision 2, dated 
October 25, 2012.
    (x) Boeing Service Bulletin 737-28A1216, Revision 2, dated 
November 12, 2012.
    (xi) Boeing Service Bulletin 737-28A1216, Revision 3, dated July 
16, 2014.

[[Page 65872]]

    (xii) Boeing Service Bulletin 737-28A1227, Revision 2, dated 
September 23, 2014.
    (xiii) Boeing 737-100/200/200C/300/400/500 Airworthiness 
Limitations (AWLs) and Certification Maintenance Requirements 
(CMRs), Document D6-38278-CMR, Revision June 2014.
    (4) For Boeing service information identified in this AD, 
contact Boeing Commercial Airplanes, Attention: Data & Services 
Management, P. O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; 
telephone: 206-544-5000, extension 1; fax: 206-766-5680; Internet 
https://www.myboeingfleet.com.
    (5) You may view this referenced service information at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. 
For information on the availability of this material at the FAA, 
call 425-227-1221.
    (6) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Renton, Washington, on August 25, 2016.
John P. Piccola, Jr.,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-21602 Filed 9-23-16; 8:45 am]
 BILLING CODE 4910-13-P