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(g) Modification and Installation of COS 

Boxes 

Within 60 months after the effective date 

of this AD, modify the COS boxes in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 737–25–1641, Revision 2, 

dated November 20, 2012. 

(h) Credit for Previous Actions 

This paragraph provides credit for the 

modification required by paragraph (g) of this 

AD, if the modification was performed before 

the effective date of this AD using Boeing 

Special Attention Service Bulletin 737–25– 

1641, dated May 13, 2011, which is not 

incorporated by reference in this AD; or 

Boeing Special Attention Service Bulletin 

737–25–1641, Revision 1, dated August 8, 

2011. 

(i) 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 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 

Aircraft Certification Office, to make those 

findings. 

(j) Related Information 

(1) For more information about this AD, 

contact Sarah Piccola, Aerospace Engineer, 

Cabin Safety and Environmental Systems 

Branch, ANM–150S, FAA, Seattle ACO, 1601 

Lind Avenue SW., Renton, WA 98057–3356; 

phone: 425–917–6483; fax: 425–917–6590; 

email: sarah.piccola@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, Washington 98124–2207; telephone 

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

5680; Internet https:// 

www.myboeingfleet.com. 

(k) 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 Special Attention Service 

Bulletin 737–25–1641, Revision 1, dated 

August 8, 2011. 

(ii) Boeing Special Attention Service 

Bulletin 737–25–1641, Revision 2, dated 

November 20, 2012. 

(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; 

telephone 206–544–5000, extension 1; fax 

206–766–5680; Internet https:// 

www.myboeingfleet.com. 

(4) You may view this service information 

at FAA, Transport Airplane Directorate, 1601 

Lind Avenue SW., Renton, Washington. 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 January 

18, 2013. 

Michael Kaszycki, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–01718 Filed 1–29–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0258; Directorate 

Identifier 2010–NM–191–AD; Amendment 

39–17326; AD 2013–02–05] 

RIN 2120–AA64 

Airworthiness Directives; the Boeing 

Company 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 737–600, 

–700, –700C, –800, –900, and –900ER 

series airplanes. This AD requires, for 

certain airplanes, installing two warning 

level indicator lights on each of the P1– 

3 and P3–1 instrument panels in the 

flight compartment. This AD also 

requires, for certain airplanes, replacing 

the existing P5–16 and P5–10 panels; 

and, for certain airplanes, replacing the 

basic P5–16 panel with a high altitude 

landing P5–16 panel. Additionally, this 

AD requires revising the airplane flight 

manual to remove certain requirements 

of previous AD actions, and to advise 

the flightcrew of certain changes. This 

AD was prompted by a design change in 

the cabin altitude warning system that 

would address the identified unsafe 

condition. We are issuing this AD to 

prevent failure of the flightcrew to 

recognize and react to a valid cabin 

altitude warning horn, which could 

result in incapacitation of the flightcrew 

due to hypoxia (a lack of oxygen in the 

body), and consequent loss of control of 

the airplane. 

DATES: This AD is effective March 6, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of March 6, 2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of November 7, 2012 (77 FR 60296, 

October 3, 2012). 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 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, Washington. 

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: 

Jeffrey W. Palmer, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

Office, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; phone: (425) 

917–6472; fax: (425) 917–6590; email: 

jeffrey.w.palmer@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a supplemental notice of 

proposed rulemaking (SNPRM) to 


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amend 14 CFR part 39 to include an AD 

that would apply to the specified 

products. The SNPRM published in the 

Federal Register on August 27, 2012 (77 

FR 51724). The original NPRM (76 FR 

16579, March 24, 2011) proposed to 

require, for certain airplanes, installing 

two warning level indicator lights on 

each of the P1–3 and P3–1 instrument 

panels in the flight compartment. The 

original NPRM also proposed to require 

revising the airplane flight manual 

(AFM) to remove certain requirements 

of previous AD actions, and to advise 

the flightcrew of the following changes: 

revised non-normal procedures to use 

when a cabin altitude warning or rapid 

depressurization occurs, and revised 

cabin pressurization procedures for 

normal operations. The SNPRM 

proposed to add airplanes to the 

applicability; add airplanes to the 

installation requirement, including, for 

certain airplanes, replacing the existing 

P5–16 and P5–10 panels; and, for 

certain airplanes, replacing the basic 

P5–16 panel with a high altitude 

landing P5–16 panel. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal (77 FR 51724, 

August 27, 2012) and the FAA’s 

response to each comment. 

Request To Exclude Airplanes With 

Certain Variable Numbers From 

Paragraph (i) of the SNPRM (77 FR 

51724, August 27, 2012) 

Boeing asked that paragraph (i) of the 

SNPRM (77 FR 51724, August 27, 2012) 

be changed to exclude airplanes with 

certain variable numbers, instead of 

excluding Groups 24, 25, and 27 

through 33 airplanes identified in 

Boeing Alert Service Bulletin 737– 

31A1332, Revision 3, dated March 28, 

2012. Boeing stated that excluding 

credit for Groups 24, 25, and 27 through 

33 airplanes excludes credit for 

approximately 655 Model 737NG 

airplanes on which the actions specified 

in Boeing Alert Service Bulletin 737– 

31A1332, Revision 1, dated June 24, 

2010; or Revision 2, dated August 18, 

2011; might have been accomplished 

previously. Boeing also noted that there 

is a conflict between these service 

bulletin revisions for the Model 737NG 

airplanes having line numbers 1 through 

740 inclusive and included in the 

applicability specified in AD 2009–16– 

07, Amendment 39–15990 (74 FR 

41607, August 18, 2009), which was 

referred to under ‘‘Related Rulemaking’’ 

in the SNPRM. Boeing stated that only 

87 airplanes having certain variable 

numbers have an actual conflict. Boeing 

also stated that the overlap between 

groups may be isolated to airplanes on 

which certain actions in the referenced 

service information were done, and if 

those airplanes have not had the overlap 

between groups, credit should be given 

for accomplishing this service 

information. 

We agree that replacing Groups 24, 

25, and 27 through 33 airplanes 

identified in Boeing Alert Service 

Bulletin 737–31A1332, Revision 3, 

dated March 28, 2012, with the 

specified airplane variable numbers 

more clearly identifies the airplanes that 

should be excluded in paragraphs (i)(1) 

and (i)(2) of this AD. This change 

excludes a smaller group of airplanes 

from those credit paragraphs. We have 

changed paragraphs (i)(1) and (i)(2) of 

this AD accordingly. 

We do not agree with giving credit for 

airplanes on which certain actions have 

been done and that might not overlap 

between groups. Doing so would require 

additional research into the detailed 

maintenance history of each affected 

airplane, which would unduly delay 

issuance of this AD. Operators of the 

affected airplanes may request approval 

of an alternative method of compliance 

(AMOC) under the provisions of 

paragraph (m) of this AD if 

substantiating data are provided. We 

have made no change to the AD in this 

regard. 

Request To Correct AFM Reference to 

Target Speed 

Delta Airlines (DAL) asked that the 

target speed identified in paragraph 

(j)(2)(iv) of the SNPRM (77 FR 51724, 

August 27, 2012) be corrected. DAL 

stated that if an emergency descent is 

required, the target speed in the SNPRM 

is given as ‘‘MO/MMO’’; however, in the 

original NPRM (76 FR 16579, March 24, 

2011), the correct target speed was given 

as ‘‘VMO/MMO.’’ DAL noted that the 

current target speed of ‘‘MO/MMO’’ is 

incorrect and should be changed back to 

‘‘VMO/MMO.’’ 

We agree that the published version of 

the target speed identified in paragraph 

(j)(2)(iv) of the SNPRM (77 FR 51724, 

August 27, 2012) is incorrect. The 

correct target speed, ‘‘VMO/MMO,’’ is 

specified in paragraph (j)(2)(iv) of this 

AD. 

Request To Include Revised Service 

Information 

United Airlines (UA) asked that the 

SNPRM (77 FR 51724, August 27, 2012) 

include Revision 4 of Boeing Alert 

Service Bulletin 737–31A1332. UA 

stated that Boeing is in the process of 

revising Boeing Alert Service Bulletin 

737–31A1332, Revision 3, dated March 

28, 2012, and added that it has reviewed 

the preliminary release of Revision 4. 

We do not agree to include Revision 

4 of Boeing Alert Service Bulletin 737– 

31A1332 in this AD because it has not 

yet been issued. We do not consider that 

delaying this action until after the 

manufacturer revises the service 

bulletin is warranted. We also cannot 

use the phrase, ‘‘or later FAA-approved 

revisions,’’ in an AD when referring to 

the service document because doing so 

violates Office of the Federal Register 

(OFR) regulations for approval of 

materials ‘‘incorporated by reference’’ in 

rules. 

To allow operators to use later 

revisions of the referenced document 

(issued after publication of the AD), 

either we must revise the AD to 

reference specific later revisions, or 

operators must request approval to use 

later revisions as an AMOC with this 

AD under the provisions of paragraph 

(m) of this AD. However, once Revision 

4 of Boeing Alert Service Bulletin 737– 

31A1332 is released, we will consider 

issuing a global AMOC to allow 

operators to use that revision for 

accomplishing the requirements of this 

AD. We have not changed the AD in this 

regard. 

Request To Clarify Component Service 

Bulletin References 

DAL asked that the final rule clarify 

that the rework specified in the BAE 

Systems component service bulletins 

identified in certain notes in Boeing 

Alert Service Bulletin 737–31A1332, 

Revision 3, dated March 28, 2012, does 

not have to be done by using every 

component service bulletin listed. DAL 

added that by specifying only those 

component service bulletins applicable 

to the dash number part being reworked, 

the intent of the notes would not have 

to be interpreted. 

We agree to provide clarification. 

Operators may refer to the part numbers 

identified in Section 1.A., ‘‘Planning 

Information—Effectivity,’’ of the service 

information specified in note rows (a) 

and (b) of Figure 1 and note rows (a) and 

(b) of Figure 2 of Boeing Alert Service 

Bulletin 737–31A1332, Revision 3, 

dated March 28, 2012, to determine 

which service information may be used 

as guidance for rework of a given panel. 

We have added a new Note 1 to 

paragraph (g) of this AD (and 

reidentified subsequent notes) to 

provide clarification. 

Request To Add Repair Language to 

AMOC Paragraph 

Boeing asked that repair approval by 

a Boeing Commercial Airplanes 


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Organization Designation Authorization 

(ODA) be added to the AMOC language 

in paragraph (m) of the SNPRM (77 FR 

51724, August 27, 2012). Boeing stated 

that this delegation of authority to 

approve an AMOC for any repair should 

be included in the AD. 

We agree with the commenter for the 

reason provided. We have added a new 

paragraph (m)(3) to this AD to include 

the standard ODA repair delegation of 

authority language. 

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. 

We 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 870 

airplanes of U.S. registry. The following 

table provides the estimated costs for 

U.S. operators to comply with this AD. 

TABLE—ESTIMATED COSTS

Action Work hours Average labor 

rate per hour Parts Cost per product 

Number of 

U.S.- 

registered 

airplanes 

Fleet cost 

Installation of warning indicator lights.Between 34 and 84 $85 Between $2,172 

and $5,238.

Between $5,062 

and $12,378.

870 Between 

$4,403,940 and 

$10,768,860. 

AFM revision .......... 2 ............................. 85 $0 ........................... $170 ....................... 870 $147,900. 

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 

We have determined that 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): 

2013–02–05 The Boeing Company: 

Amendment 39–17326; Docket No. FAA– 

2011–0258; Directorate Identifier 2010–NM– 

191–AD. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 6, 2013. 

(b) Affected ADs 

This AD affects the ADs identified in 

paragraphs (b)(1), (b)(2), and (b)(3) of this AD. 

This AD does not supersede the requirements 

of these ADs. 

(1) AD 2003–14–08, Amendment 39–13227 

(68 FR 41519, July 14, 2003). 

(2) AD 2006–13–13, Amendment 39–14666 

(71 FR 35781, June 22, 2006; corrected July 

3, 2006 (71 FR 37980)). 

(3) AD 2008–23–07, Amendment 39–15728 

(73 FR 66512, November 10, 2008). 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–600, –700, –700C, –800, –900, 

and –900ER series airplanes, certificated in 

any category, as identified in Boeing Alert 

Service Bulletin 737–31A1332, Revision 3, 

dated March 28, 2012. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 31, Instruments. 

(e) Unsafe Condition 

This AD was prompted by a design change 

in the cabin altitude warning system that 

would address the identified unsafe 

condition. We are issuing this AD to prevent 

failure of the flightcrew to recognize and 

react to a valid cabin altitude warning horn, 

which could result in incapacitation of the 

flightcrew due to hypoxia (a lack of oxygen 

in the body), and consequent loss of control 

of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Installation 

Within 36 months after the effective date 

of this AD: Install two warning level 

indicator lights on each of the P1–3 and P3– 

1 instrument panels in the flight 

compartment, and, as applicable, replace the 

existing P5–16 and P5–10 panels, in 

accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

737–31A1332, Revision 3, dated March 28, 

2012. 

Note 1 to paragraph (g) of this AD: Note 

rows (a) and (b) of Figures 1 and 2 of Boeing 

Alert Service Bulletin 737–31A1332, 

Revision 3, dated March 28, 2012, provide 

additional guidance for reworking the P1–3 

and P3–1 panels to new part numbers. 

Section 1.A., ‘‘Planning Information— 

Effectivity,’’ of the documents specified in 

those note rows identify part numbers to 

which those documents apply. 


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(h) Concurrent Requirements 

For Group 21, Configuration 2 airplanes, as 

identified in Boeing Alert Service Bulletin 

737–31A1332, Revision 3, dated March 28, 

2012: Prior to or concurrently with doing the 

actions required by paragraph (g) of this AD, 

replace the basic P5–16 panel with a high 

altitude landing P5–16 panel, in accordance 

with the Accomplishment Instructions of 

Boeing Service Bulletin 737–21–1171, dated 

February 12, 2009. 

(i) Credit for Previous Actions 

(1) For Group 1 airplanes identified in 

Boeing Alert Service Bulletin 737–31A1332, 

Revision 1, dated June 24, 2010; except 

airplanes having variable numbers YA001 

through YA019 inclusive, YA201 through 

YA203 inclusive, YA231 through YA242 

inclusive, YA251, YA252, YA271, YA272, 

YA301, YA302, YA311, YA312, YA501 

through YA508 inclusive, YA541, YA701, 

YA702, YC001 through YC007 inclusive, 

YC051, YC052, YC101, YC102, YC111, 

YC121, YC301, YC302, YC321 through 

YC330 inclusive, YC381, YC401 through 

YC403 inclusive, YC501, YC502, and YE001 

through YE003 inclusive: This paragraph 

provides credit for the actions required by 

paragraph (g) of this AD, if those actions were 

performed before the effective date of this AD 

using Boeing Alert Service Bulletin 737– 

31A1332, Revision 1, dated June 24, 2010. 

(2) For airplanes identified in Boeing Alert 

Service Bulletin 737–31A1332, Revision 2, 

dated August 18, 2011; except airplanes 

identified in paragraph (i)(3) of this AD and 

airplanes having variable numbers YA001 

through YA019 inclusive, YA201 through 

YA203 inclusive, YA231 through YA242 

inclusive, YA251, YA252, YA271, YA272, 

YA301, YA302, YA311, YA312, YA501 

through YA508 inclusive, YA541, YA701, 

YA702, YC001 through YC007 inclusive, 

YC051, YC052, YC101, YC102, YC111, 

YC121, YC301, YC302, YC321 through 

YC330 inclusive, YC381, YC401 through 

YC403 inclusive, YC501, YC502, and YE001 

through YE003 inclusive: This paragraph 

provides credit for the actions required by 

paragraph (g) of this AD, if those actions were 

performed before the effective date of this AD 

using Boeing Alert Service Bulletin 737– 

31A1332, Revision 2, dated August 18, 2011. 

(3) For Group 21, Configuration 2 airplanes 

identified in Boeing Alert Service Bulletin 

737–31A1332, Revision 3, dated March 28, 

2012: This paragraph provides credit for the 

actions required by paragraph (g) of this AD, 

if those actions were performed before the 

effective date of this AD using Boeing Alert 

Service Bulletin 737–31A1332, Revision 2, 

dated August 18, 2011, and provided that the 

actions specified in Boeing Service Bulletin 

737–21–1171, dated February 12, 2009, were 

accomplished prior to or concurrently with 

the actions specified in Boeing Alert Service 

Bulletin 737–31A1332, Revision 2, dated 

August 18, 2011. 

(j) Airplane Flight Manual (AFM) Revisions 

Within 36 months after the effective date 

of this AD, and after doing the installation 

required by paragraph (g) of this AD, do the 

actions specified in paragraphs (j)(1), (j)(2), 

and (j)(3) of this AD. 

(1) Revise the Limitations Section of the 

applicable Boeing 737 AFM by doing the 

following action: Delete the ‘‘CABIN 

ALTITUDE WARNING TAKEOFF 

BRIEFING’’ added by AD 2008–23–07, 

Amendment 39–15728 (73 FR 66512, 

November 10, 2008). 

(2) Revise the Non-Normal Procedures 

Section of the applicable Boeing 737 AFM by 

doing the actions specified in paragraphs 

(j)(2)(i), (j)(2)(ii), (j)(2)(iii), and (j)(2)(iv) of 

this AD. 

(i) Delete the procedure titled ‘‘WARNING 

HORN—CABIN ALTITUDE OR 

CONFIGURATION RECALL’’ added by AD 

2006–13–13, Amendment 39–14666 (71 FR 

35781, June 22, 2006; corrected July 3, 2006 

(71 FR 37980). If the title of this procedure 

has been changed according to FAA 

Alternative Method of Compliance (AMOC) 

Letter 130S–09–134a, dated April 28, 2009, 

delete the procedure that was approved 

according to that AMOC letter. 

(ii) Delete the procedure titled ‘‘CABIN 

ALTITUDE WARNING OR RAPID 

DEPRESSURIZATION’’ added by AD 2003– 

14–08, Amendment 39–13227 (68 FR 41519, 

July 14, 2003). 

(iii) If the procedure titled ‘‘CABIN 

ALTITUDE (Airplanes with the CABIN 

ALTITUDE lights installed)’’ is currently 

contained in the applicable Boeing 737 AFM, 

delete the procedure titled ‘‘CABIN 

ALTITUDE (Airplanes with the CABIN 

ALTITUDE lights installed).’’ 

(iv) Add the following statement. This may 

be done by inserting a copy of this AD into 

the applicable AFM. 

CABIN ALTITUDE WARNING OR RAPID DEPRESSURIZATION (REQUIRED BY AD 2013–02–05) 

Condition: The Cabin Altitude warning light illuminates or the intermittent warning horn sounds in flight above 10,000 ft MSL. 

Recall: 

Oxygen Masks and Regulators ........................................................................................................................................ ON, 100% 

Crew Communications ..................................................................................................................................................... ESTABLISH 

Reference: 

Pressurization Mode Selector .......................................................................................................................................... MANUAL 

Outflow Valve Switch ........................................................................................................................................................ CLOSE 

If Cabin Altitude is uncontrollable: 

Emergency Descent (If Required) ..................................................................................................................... INITIATE 

Passenger Oxygen Switch ................................................................................................................................. ON 

Thrust Levers ..................................................................................................................................................... CLOSE 

Speed Brakes ..................................................................................................................................................... FLIGHT DETENT 

Target Speed ..................................................................................................................................................... VMO/MMO 

Note 2 to paragraphs (j)(2)(iv) and (j)(3)(ii) 

of this AD: When statements identical to 

those specified in paragraphs (j)(2)(iv) and 

(j)(3)(ii) of this AD have been included in the 

general revisions of the AFM, the general 

revisions may be inserted into the AFM, and 

the copies of this AD may be removed from 

the AFM. 

(3) Revise the Normal Procedures Section 

of the applicable Boeing 737 AFM by doing 

the actions specified in paragraphs (j)(3)(i) 

and (j)(3)(ii) of this AD. 

(i) Delete the procedure titled ‘‘CABIN 

ALTITUDE WARNING TAKEOFF 

BRIEFING’’ added by AD 2008–23–07, 

Amendment 39–15728 (73 FR 66512, 

November 10, 2008). 

(ii) Add the following statement. This may 

be done by inserting a copy of this AD into 

the applicable AFM. 

For normal operations, the pressurization 

mode selector should be in AUTO prior to 

takeoff. (Required by AD 2013–02–05) 

(k) Terminating Action for Affected ADs 

Accomplishing the requirements of this AD 

terminates the requirements of the ADs 

identified in paragraphs (k)(1), (k)(2), and 

(k)(3) of this AD for only the airplanes 

identified in paragraph (c) of this AD. 

(1) AD 2003–14–08, Amendment 39–13227 

(68 FR 41519, July 14, 2003): The 

requirements specified in Table 1 and Figure 

1 of that AD. 

(2) AD 2006–13–13, Amendment 39–14666 

(71 FR 35781, June 22, 2006; corrected July 

3, 2006 (71 FR 37980): All requirements of 

that AD. 

(3) AD 2008–23–07, Amendment 39–15728 

(73 FR 66512, November 10, 2008): All 

requirements of that AD. 

(l) Special Flight Permits 

Special flight permits, as described in 

Section 21.197 and Section 21.199 of the 

Federal Aviation Regulations (14 CFR 21.197 

and 21.199), are not allowed. 

(m) 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, 


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6206 Federal Register / Vol. 78, No. 20 / Wednesday, January 30, 2013 / Rules and Regulations 

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. 

(n) Related Information 

(1) For more information about this AD, 

contact Jeffrey W. Palmer, Aerospace 

Engineer, Systems and Equipment Branch, 

ANM–130S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue SW., 

Renton, Washington 98057–3356; phone: 

(425) 917–6472; fax: (425) 917–6590; email: 

jeffrey.w.palmer@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, Washington 98124–2207; telephone 

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, Washington. 

For information on the availability of this 

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

(o) 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 March 6, 2013. 

(i) Boeing Service Bulletin 737–21–1171, 

dated February 12, 2009. 

(ii) Reserved. 

(4) The following service information was 

approved for IBR on November 7, 2012 (77 

FR 60296, October 3, 2012). 

(i) Boeing Alert Service Bulletin 737– 

31A1332, Revision 1, dated June 24, 2010. 

(ii) Boeing Alert Service Bulletin 737– 

31A1332, Revision 2, dated August 18, 2011. 

(iii) Boeing Alert Service Bulletin 737– 

31A1332, Revision 3, dated March 28, 2012. 

(4) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, Washington 98124–2207; telephone 

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

5680; Internet https:// 

www.myboeingfleet.com. 

(5) You may view this service information 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, Washington. 

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/ibrlocations.html. 

Issued in Renton, Washington, on January 

9, 2013. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–01720 Filed 1–29–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0030; Directorate 

Identifier 2012–NE–42–AD; Amendment 39– 

17325; AD 2013–02–04] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for all 

Rolls-Royce plc RB211–Trent 970–84, 

RB211–Trent 970B–84, RB211–Trent 

972–84, RB211–Trent 972B–84, RB211– 

Trent 977–84, RB211–Trent 977B–84 

and RB211–Trent 980–84 turbofan 

engines. This AD requires on-wing 

inspections of low-pressure turbine 

(LPT) disk seal fins and interstage seals 

when post-flight review indicates 

Engine Health Monitoring (EHM) 

vibratory maintenance-alert limits were 

exceeded in flight. The AD also requires 

in-shop inspections of the LPT disk seal 

fins and interstage seals to detect cracks 

or damage and, depending on the 

findings, accomplishment of corrective 

action. This AD is prompted by a Trent 

900 engine experiencing LPT stage 2 

disk interstage seal material loss and 

increased low-pressure rotor vibration 

while in flight. We are issuing this AD 

to prevent cracks in the LPT disk, which 

could result in uncontained engine 

failure and damage to the airplane. 

DATES: This AD becomes effective 

February 14, 2013. 

We must receive comments on this 

AD by March 18, 2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of February 14, 2013. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: U.S. Department of 

Transportation, 1200 New Jersey 

Avenue SE., West Building Ground 

Floor, Room W12–140, Washington, DC 

20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

For service information identified in 

this AD, contact Rolls-Royce plc, 

Corporate Communications, P.O. Box 

31, Derby, England, DE248BJ; phone: 

011–44–1332–242424; fax: 011–44– 

1332–245418, or email: http:// 

www.rolls-royce.com/contact/ 

civil_team.jsp. You may view this 

service information at the FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803. 

For information on the availability of 

this material at the FAA, call 781–238– 

7125. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office 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 street address for 

the Docket Operations office (phone: 

(800) 647–5527) is the same as the Mail 

address provided in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Robert Green, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7754; fax: 781–238– 

7199; email: robert.green@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Airworthiness Directive 2012–0220, 

dated October 22, 2012, a Mandatory 


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