Federal Register / Vol. 78, No. 13 / Friday, January 18, 2013 / Rules and Regulations 4047 

(6) You may view this service information 

at 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. 

(7) 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/ibrlocations.html. 

Issued in Renton Washington, on 

December 17, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–00897 Filed 1–17–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0299; Directorate 

Identifier 2011–NM–029–AD; Amendment 

39–17295; AD 2012–25–13] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 747–100, 

747–200B, 747–200C, 747–200F, 747– 

300, 747–400, 747–400F, and 747SR 

series airplanes. This AD was prompted 

by reports of broken and damaged latch 

pin retention bolts and subsequent 

migration of the latch pins of the main 

deck side cargo door (MDSCD). This AD 

requires various repetitive inspections 

of the MDSCD latch pin fittings, 

measuring the latch pin, and related 

investigative and corrective actions if 

necessary. This AD also requires 

modifying the latch pin fittings and 

installing new latch pins and latch pin 

fasteners. We are issuing this AD to 

prevent loss of the cargo door and rapid 

depressurization of the airplane. 

DATES: This AD is effective February 22, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of February 22, 2013. 

ADDRESSES: For 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; 

phone: 206–544–5000, extension 1; fax: 

206–766–5680; Internet: https:// 

www.myboeingfleet.com. You may 

review copies of the 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. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; 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 

Document 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: Bill 

Ashforth, Aerospace Engineer, Airframe 

Branch, ANM–120S, FAA, Seattle 

Aircraft Certification Office (ACO), 1601 

Lind Avenue SW., Renton, WA 98057– 

3356; phone: 425–917–6432; fax: 425– 

917–6590; email: Bill.Ashforth@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM published in the Federal 

Register on March 27, 2012 (77 FR 

18137). That NPRM proposed to require 

various repetitive inspections of the 

MDSCD latch pin fittings, measuring the 

latch pin, and related investigative and 

corrective actions if necessary. That 

NPRM also proposed to require 

modifying the latch pin fittings and 

installing new latch pins and latch pin 

fasteners. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal (77 FR 18137, 

March 27, 2012) and the FAA’s response 

to each comment. 

Requests To Change Applicability 

Boeing and Thai Airways 

International PCL requested that we 

limit the applicability of the NPRM (77 

FR 18137, March 27, 2012) to airplanes 

with a Boeing-certified MDSCD instead 

of airplanes identified in Boeing Alert 

Service Bulletin 747–52A2294, Revision 

1, dated August 16, 2011. The 

commenters requested this change to 

ensure that airplanes modified in the 

future to Model 747–400 Boeing 

Converted Freighter (BCF) with an 

MDSCD installation are inspected and 

modified per the intent of Boeing Alert 

Service Bulletin 747–52A2294, Revision 

1, dated August 16, 2011. 

We partially agree with changing the 

applicability. The AD already provides 

coverage for the future Model 747–400 

BCF airplanes with an MDSCD 

installation. That is, the applicability of 

the AD specifies Model 747–100, 747– 

200B, 747–200C, 747–200F, 747–300, 

747–400, 747–400F, and 747SR series 

airplanes, certificated in any category, 

as identified in Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, 

dated August 16, 2011. This service 

information identifies Model 747–100, 

747–200B, 747–200C, 747–200F, 747– 

300, 747–400, and 747–400F airplanes 

with an MDSCD installed in production 

or by a Boeing-approved modification. 

For clarification, per the Type 

Certificate Data Sheet (TCDS) for those 

airplanes, Model 747–400 BCF and 747– 

400 Special Freighter (SF) airplanes 

remain as Model 747–400 series 

airplanes for documentation purposes 

on the TCDS and with regard to the 

applicability of ADs. Where Boeing 

Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, 

specifies ‘‘all’’ airplanes, this means 

past, present, and future airplanes. 

However, we found that Boeing Alert 

Service Bulletin 747–52A2294, Revision 

1, dated August 16, 2011, does not 

currently provide a grace period for 

airplanes that have been modified with 

an MDSCD after the initial compliance 

time of 6 months after the effective date 

of this AD. Therefore, the initial 

compliance time specified in paragraph 

(g) of this AD has been modified to add 

a grace period for airplanes that are 

modified with an MDSCD after the 

effective date of this AD. Additionally, 

the initial compliance time reference to 

paragraph 1.E., ‘‘Compliance,’’ of Boeing 

Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, as 

revised by Boeing Alert Service Bulletin 

747–52A2294, Revision 2, dated 

December 12, 2011, has been removed 

from paragraph (g) of this final rule. 

Request To Change Service Information 

Reference 

Boeing requested that we change the 

service information reference in 

paragraphs (g), (h), (i), and (j) of the 

NPRM (77 FR 18137, March 27, 2012) 

from Boeing Alert Service Bulletin 747– 

52A2294, Revision 1, dated August 16, 


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4048 Federal Register / Vol. 78, No. 13 / Friday, January 18, 2013 / Rules and Regulations 

2011, as revised by Boeing Alert Service 

Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011, to Revision 3 

of that service information. (Since 

Revision 3 has not been published, there 

is no issue date.) Boeing stated that 

Revision 3 of Boeing Alert Service 

Bulletin 747–52A2294 will be a full 

revision that will ‘‘update the effectivity 

list of Model 747–400 BCF airplanes,’’ 

and will incorporate changes identified 

during validation, which was 

accomplished in March 2012. Boeing 

stated that Revision 3 of Boeing Alert 

Service Bulletin 747–52A2294 will add 

no new work for airplanes having 

previously incorporated the actions 

specified in Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, 

dated August 16, 2011; or Revision 2, 

dated December 12, 2011. 

We disagree with referencing Revision 

3 of Boeing Alert Service Bulletin 747– 

52A2294 in this final rule. Boeing has 

not submitted Revision 3 of Boeing 

Alert Service Bulletin 747–52A2294 for 

FAA approval. We consider it 

inappropriate to delay correcting the 

identified unsafe condition to wait for 

this new service information revision. 

However, after Revision 3 of Boeing 

Alert Service Bulletin 747–52A2294 is 

FAA-approved and issued, operators 

may submit requests for approval of 

alternative methods of compliance 

(AMOCs) under the provisions of 

paragraph (l) of this AD to use Revision 

3. We have not changed the final rule 

in this regard. 

Request To Change Credit for Previous 

Actions 

Boeing requested that we change 

paragraph (k) of the NPRM (77 FR 

18137, March 27, 2012) to also give 

credit for actions required by paragraphs 

(g) and (h) of the NPRM, if those actions 

were performed before the effective date 

of the AD using Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, 

dated August 16, 2011, as revised by 

Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 

12, 2011. Boeing stated that this request 

is related to its request to replace the 

service information reference in 

paragraphs (g), (h), (i), and (j) of the 

NPRM from Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, 

dated August 16, 2011, as revised by 

Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 

12, 2011, to Revision 3 of that service 

information. 

We partially agree. We agree to 

provide credit for Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, 

dated August 16, 2011, before its 

revision by Boeing Alert Service 

Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011. However, 

since we have not changed the AD to 

refer to Revision 3 of Boeing Alert 

Service Bulletin 747–52A2294, we 

disagree with specifying credit for using 

Boeing Alert Service Bulletin 747– 

52A2294, Revision 1, dated August 16, 

2011, as revised by Boeing Alert Service 

Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011. We have 

changed paragraph (k) of this AD to 

specify credit for the actions required by 

paragraphs (g) and (h) of this AD 

performed before the effective date of 

this AD using Boeing Alert Service 

Bulletin 747–52A2294, dated July 8, 

2010; or Boeing Alert Service Bulletin 

747–52A2294, Revision 1, dated August 

16, 2011, before its revision by Boeing 

Alert Service Bulletin 747–52A2294, 

Revision 2, dated December 12, 2011. 

Request To Change Unsafe Condition 

Statement 

Boeing requested that we modify the 

unsafe condition statement in the NPRM 

(77 FR 18137, March 27, 2012) by 

removing the reference to broken latch 

pin fittings. Boeing stated that Boeing 

Alert Service Bulletin 747–52A2294, 

dated July 8, 2010, was prompted by 

broken retention bolts and the 

subsequent migration of the latch pins 

rather than by the broken latch pin 

fittings. Boeing also stated that the 

service information recommends 

inspecting the latch pin fittings for 

damage, but that no broken latch pin 

fittings have been associated with this 

issue. 

We agree with the commenter’s 

request. We have changed the Summary 

and paragraph (e) of the AD to state that 

this AD was prompted by reports of 

broken and damaged latch pin retention 

bolts and subsequent migration of the 

latch pins of the MDSCD. 

Request To Add Federal Aviation 

Regulation Reference 

Boeing requested that we add a 

reference to paragraph (b) of section 

25.571 of the Federal Aviation 

Regulations (14 CFR 25.571) to 

paragraph (l)(3), ‘‘Alternative Methods 

of Compliance (AMOCs),’’ of the NPRM 

(77 FR 18137, March 27, 2012). Boeing 

stated that paragraph (b) is the specific 

paragraph of 14 CFR 25.571, 

Amendment 45, that requires 

compliance for the Model 747 airframe 

beyond the original certification basis. 

We find that clarification is necessary. 

The reference to section 25.571 of the 

Federal Aviation Regulations (14 CFR 

25.571), Amendment 45, was included 

inadvertently in paragraph (l)(3) of the 

NPRM (77 FR 18137, March 27, 2012). 

Therefore, we have revised paragraph 

(l)(3) of this final rule to remove the 

reference to ‘‘14 CFR 25.571, 

Amendment 45.’’ 

Request To Change Compliance Time 

for Deactivated MDSCDs 

KLM Royal Dutch Airlines (KLM) 

requested that we add alternative 

compliance times to the NPRM (77 FR 

18137, March 27, 2012) for deactivated 

MDSCDs. KLM stated that a deactivated 

MDSCD is much less susceptible to 

mechanical defects than an activated 

door. KLM suggested that an initial 

inspection within 6 months after the 

effective date of the AD, and a 

modification as required by paragraph 

(h) of the NPRM within 48 months after 

the effective date of the AD, would be 

sufficient to maintain a safe condition. 

KLM noted that a similar alternative 

was made for deactivated main entry 

doors in paragraph (f) of AD 2007–12– 

11, Amendment 39–15089 (72 FR 

31984, June 11, 2007). 

We agree that a deactivated MDSCD is 

much less susceptible to mechanical 

defects than an activated door. We have 

changed paragraphs (g) and (i) of this 

AD to reference an exception in new 

paragraph (j)(3) of this AD, which states 

that the repetitive inspections required 

by paragraphs (g) and (i) of this AD are 

not applicable to a deactivated MDSCD. 

The initial inspection required by 

paragraph (g) of this AD and 

modifications and replacements 

required by paragraph (h) of this AD are 

still applicable to a deactivated MDSCD. 

In addition, when the MDSCD is 

reactivated, the repetitive inspections 

required by paragraphs (g) and (i) of this 

AD are applicable and must be done at 

intervals not to exceed those specified 

in paragraph 1.E., ‘‘Compliance,’’ of 

Boeing Alert Service Bulletin 747– 

52A2294, Revision 1, dated August 16, 

2011, as revised by Boeing Alert Service 

Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously 

and minor editorial changes. We have 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (77 FR 

18137, March 27, 2012) for correcting 

the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (77 FR 18137, 

March 27, 2012). 


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Federal Register / Vol. 78, No. 13 / Friday, January 18, 2013 / Rules and Regulations 4049 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of the AD. 

Costs of Compliance 

We estimate that this AD affects 77 

airplanes of U.S. registry. 

We estimate the following costs to 

comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. 

operators 

Detailed inspection, including 

torque check.

4 work-hours × $85 per hour 

= $340 per inspection cycle.

$0 $340 per inspection cycle ...... $26,180 per inspection cycle. 

Modification ............................ 11 work-hours × $85 per hour 

= $935.

5,530 $6,465 .................................... $497,805. 

Post-modification detailed inspection.2 work-hours × $85 per hour 

= $170 per inspection cycle.

0 $170 per inspection cycle ...... $13,090 per inspection cycle. 

We estimate the following costs to do 

necessary repairs and replacements that 

would be required based on the results 

of the inspection. We have no way of 

determining the number of aircraft that 

might need these repairs. 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Repair/replacements (Groups 1 and 2 airplanes) ........ 7 work-hours × $85 per hour = $595 ........................... $11,478 $12,073 

Repair/replacements (Group 3 airplanes) .................... 7 work-hours × $85 per hour = $595 ........................... 12,254 12,849 

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 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

2012–25–13 The Boeing Company: 

Amendment 39–17295; Docket No. 

FAA–2012–0299; Directorate Identifier 

2011–NM–029–AD. 

(a) Effective Date 

This AD is effective February 22, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 747–100, 747–200B, 747–200C, 747– 

200F, 747–300, 747–400, 747–400F, and 

747SR series airplanes; certificated in any 

category; as identified in Boeing Alert 

Service Bulletin 747–52A2294, Revision 1, 

dated August 16, 2011. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 52, Doors. 

(e) Unsafe Condition 

This AD was prompted by reports of 

broken and damaged latch pin retention bolts 

and subsequent migration of the latch pins of 

the main deck side cargo door (MDSCD). We 

are issuing this AD to prevent loss of the 

cargo door and rapid depressurization of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Action 

At the applicable time specified in 

paragraph (g)(1) or (g)(2) of this AD, 

whichever occurs later: Do a detailed 

inspection of the ten MDSCD latch pin 

fittings to detect loose, broken, damaged, or 

missing retention bolts and nuts; measure the 

latch pin diameter; and do all applicable 

related investigative and corrective actions, 

except as required by paragraph (j)(1) of this 

AD; in accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

747–52A2294, Revision 1, dated August 16, 

2011, as revised by Boeing Alert Service 


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Bulletin 747–52A2294, Revision 2, dated 

December 12, 2011. Do all applicable related 

investigative and corrective actions before 

further flight. Repeat the inspection 

thereafter, except as required by paragraph 

(j)(3) of this AD, at intervals not to exceed 

those specified in paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, dated 

August 16, 2011, as revised by Boeing Alert 

Service Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011. 

(1) Within 6 months after the effective date 

of this AD. 

(2) Within 6 months after the installation 

of an MDSCD installed in Boeing production 

or by a Boeing-approved modification. 

(h) Modification of Latch Pin Fittings and 

Replacement of Latch Pins and Latch Pin 

Retention Fasteners 

At the time specified in paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, dated 

August 16, 2011, as revised by Boeing Alert 

Service Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011, except as provided 

by paragraph (j)(2) of this AD: Modify the 10 

MDSCD latch pin fittings, replace the latch 

pins with new latch pins, and replace the 

latch pin retention fasteners with new latch 

pin retention fasteners, except as required by 

paragraph (j)(1) of this AD, in accordance 

with the Accomplishment Instructions of 

Boeing Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, as revised 

by Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 12, 

2011. Accomplishment of the actions 

specified in paragraph (h) of this AD 

terminates the inspection required in 

paragraph (g) of this AD. 

(i) Post-Modification Inspection and 

Corrective Action 

At the applicable compliance time 

specified in paragraph 1.E., ‘‘Compliance,’’ of 

Boeing Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, as revised 

by Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 12, 

2011, except as provided by paragraph (j)(2) 

of this AD: Do a detailed inspection of the 

10 MDSCD latch pin fittings to detect loose, 

broken, damaged, or missing retention bolts 

and nuts; measure the latch pin diameter; 

and do all applicable related investigative 

and corrective actions, except as required by 

paragraph (j)(1) of this AD; in accordance 

with the Accomplishment Instructions of 

Boeing Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, as revised 

by Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 12, 

2011. Do the applicable related investigative 

and corrective actions before further flight. 

Repeat the inspection thereafter, except as 

required by paragraph (j)(3) of this AD, at 

intervals not to exceed those specified in 

paragraph 1.E., ‘‘Compliance,’’ of Boeing 

Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, as revised 

by Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 12, 

2011. 

(j) Exceptions to Service Bulletin 

Specifications 

(1) If any damage is found during any 

inspection required by this AD, and Boeing 

Alert Service Bulletin 747–52A2294, 

Revision 1, dated August 16, 2011, as revised 

by Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 12, 

2011, specifies to contact Boeing for 

appropriate action: Before further flight, 

repair using a method approved in 

accordance with the procedures specified in 

paragraph (l) of this AD. 

(2) Where Boeing Alert Service Bulletin 

747–52A2294, Revision 1, dated August 16, 

2011, as revised by Boeing Alert Service 

Bulletin 747–52A2294, Revision 2, dated 

December 12, 2011, specifies a compliance 

time relative to the issue date of that service 

bulletin, this AD requires compliance within 

the specified compliance time after the 

effective date of this AD. 

(3) The repetitive inspections required by 

paragraphs (g) and (i) of this AD are not 

applicable to a deactivated MDSCD. 

However, the initial inspection required by 

paragraph (g) of this AD and modifications 

and replacements required by paragraph (h) 

of this AD are still applicable to a deactivated 

MDSCD. When the MDSCD is reactivated, the 

repetitive inspections required by paragraphs 

(g) and (i) of this AD are applicable and must 

be done thereafter at intervals not to exceed 

those specified in paragraph 1.E., 

‘‘Compliance,’’ of Boeing Alert Service 

Bulletin 747–52A2294, Revision 1, dated 

August 16, 2011, as revised by Boeing Alert 

Service Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011. 

(k) Credit for Previous Actions 

This paragraph provides credit for actions 

required by paragraphs (g) and (h) of this AD, 

if those actions were performed before the 

effective date of this AD using Boeing Alert 

Service Bulletin 747–52A2294, dated July 8, 

2010, which is not incorporated by reference 

in this AD; or Boeing Alert Service Bulletin 

747–52A2294, Revision 1, dated August 16, 

2011, before its revision by Boeing Alert 

Service Bulletin 747–52A2294, Revision 2, 

dated December 12, 2011. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle Aircraft 

Certification Office, 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 the 

Related Information section of this AD. 

Information may be emailed to: 9-ANMSeattle-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 

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. For a repair 

method to be approved, the repair must meet 

the certification basis of the airplane and the 

approval must specifically refer to this AD. 

(m) Related Information 

(1) For more information about this AD, 

contact Bill Ashforth, Aerospace Engineer, 

Airframe Branch, ANM–120S, Seattle 

Aircraft Certification Office (ACO), FAA, 

1601 Lind Avenue SW., Renton, WA 98057– 

3356; phone: 425–917–6432; fax: 425–917– 

6590; email: Bill.Ashforth@faa.gov. 

(2) For 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; phone: 206–544– 

5000, extension 1; fax: 206–766–5680; 

Internet: https://www.myboeingfleet.com. 

(n) 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. 

(i) Boeing Alert Service Bulletin 747– 

52A2294, Revision 1, dated August 16, 2011. 

(ii) Boeing Alert Service Bulletin 747– 

52A2294, Revision 2, dated December 12, 

2011. 

(3) For The Boeing Company 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; phone: 

206–544–5000, extension 1; fax: 206–766– 

5680; Internet: https:// 

www.myboeingfleet.com. 

(4) You may review copies of the 

referenced service information at the FAA, 

Transport Airplane Directorate, the FAA, 

1601 Lind Avenue SW., Renton, WA. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

(5) 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/ibrlocations.html. 

Issued in Renton, Washington, on 

December 12, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–00895 Filed 1–17–13; 8:45 am] 

BILLING CODE 4910–13–P 


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