12238 Federal Register / Vol. 74, No. 55 / Tuesday, March 24, 2009 / Rules and Regulations 

Measure and Repair 

(g) For Group 4 airplanes, as identified in 

Boeing Alert Service Bulletin 757–28A0085, 

Revision 2, dated December 11, 2007 (‘‘the 

service bulletin’’): Within 60 months after the 

effective date of this AD, do the 

measurements and applicable repair by 

accomplishing all the applicable actions 

specified in the Accomplishment 

Instructions of the service bulletin. Do the 

applicable repair before further flight. 

Airworthiness Limitations (AWLs) Revision 

for AWL No. 28–AWL–22 

(h) Concurrently with accomplishing the 

actions required by paragraphs (f) and (g) of 

this AD, revise the AWLs section of the 

Instructions for Continued Airworthiness 

(ICA) by incorporating AWL No. 28–AWL–22 

of Subsection G of Section 9, D622N001–9 

Revision December 2008 of the Boeing 757 

Maintenance Planning Data (MPD) 

Document. 

No Alternative Critical Design Configuration 

Control Limitations (CDCCLs) 

(i) After accomplishing the action specified 

in paragraph (h) of this AD, no alternative 

CDCCLs may be used unless the CDCCLs are 

approved as an AMOC in accordance with 

the procedures specified in paragraph (k) of 

this AD. 

Credit for Actions Done According to 

Previous Issues of the Service Information 

(j) Actions done before the effective date of 

this AD in accordance with Boeing Alert 

Service Bulletin 757–28A0085, Revision 1, 

dated April 16, 2007, are acceptable for 

compliance with the requirements of 

paragraphs (f) and (g) of this AD. 

(k) Actions done before the effective date 

of this AD in accordance with AWL No. 28– 

AWL–22 of Subsection G of Section 9 

D622N001–9, Revision January 2007, 

Revision November 2007, or Revision March 

2008 of the Boeing 757 Maintenance 

Planning Data (MPD) Document, are 

acceptable for compliance with the 

requirements of paragraph (h) of this AD. 

Terminating Action for AWLs Revision 

(l) Incorporating AWL No. 28–AWL–22 

into the AWLs section of the ICA in 

accordance with paragraph (g)(3) of AD 

2008–10–11, amendment 39–15517, 

terminates the action specified in paragraph 

(h) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(m)(1) The Manager, Seattle Aircraft 

Certification Office, FAA, ATTN: Jen Pei, 

Aerospace Engineer, Systems and Equipment 

Branch, ANM–130S, FAA, Seattle ACO, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 917–6409; fax 

(425) 917–6590; has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

Material Incorporated by Reference 

(n) You must use Boeing Alert Service 

Bulletin 757–28A0085, Revision 2, dated 

December 11, 2007; and Section 9, 

D622N001–9 Revision December 2008 of the 

Boeing 757 Maintenance Planning Data 

(MPD) Document; as applicable; to do the 

actions required by this AD, unless the AD 

specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(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; e-mail me.boecom@boeing.com; 

Internet https://www.myboeingfleet.com. 

(3) You may review copies of the 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 or 425–227–1152. 

(4) You may also review copies of the 

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/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on March 

12, 2009. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–5962 Filed 3–23–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–0224; Directorate 

Identifier 2007–NM–302–AD; Amendment 

39–15852; AD 2009–06–15] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Model F.27 Mark 050 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is superseding an 

existing airworthiness directive (AD) 

that applies to certain Fokker Model 

F.27 Mark 050 airplanes. The existing 

AD currently requires repetitive visual 

checks for oil leaks of both engines 

between the spinner and the engine 

cowling, and directly behind the heated 

intake lip of the engine; repetitive 

inspections for oil leaks at the feathering 

pump on both engines; and corrective 

actions if necessary. This new AD 

retains the requirements of the existing 

AD. This AD also requires replacing the 

outlet port (high-pressure) bobbin with 

a new, improved outlet port (highpressure) bobbin, which terminates the 

repetitive visual checks and inspections. 

This AD results from reports of oil 

leakage at the engine feathering pump. 

We are issuing this AD to prevent oil 

loss from the feathering pump, which 

could cause the engine to shut down in 

flight. 

DATES: This AD becomes effective April 

8, 2009. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of April 8, 2009. 

On October 21, 2005 (70 FR 58300, 

October 6, 2005), the Director of the 

Federal Register approved the 

incorporation by reference of certain 

other publications. 

We must receive comments on this 

AD by April 23, 2009. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For service information identified in 

this AD, contact Fokker Services B.V., 

Technical Services Dept., P.O. Box 231, 

2150 AE Nieuw-Vennep, the 

Netherlands; telephone +31 (0)252–627– 

350; fax +31 (0)252–627–211; e-mail 

technicalservices.fokkerservices@

stork.com; Internet http:// 

www.myfokkerfleet.com. 

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 

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Federal Register / Vol. 74, No. 55 / Tuesday, March 24, 2009 / Rules and Regulations 12239 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The street address for 

the Docket Office (telephone 800–647– 

5527) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1137; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Discussion 

On September 26, 2005, the FAA 

issued AD 2005–20–21, amendment 39– 

14317 (70 FR 58300, October 6, 2005). 

That AD applies to certain Fokker 

Model F27 Mark 050 airplanes. That AD 

requires repetitive visual checks for oil 

leaks of both engines between the 

spinner and the engine cowling, and 

directly behind the heated intake lip of 

the engine; repetitive inspections for oil 

leaks at the feathering pump on both 

engines; and corrective actions if 

necessary. That AD resulted from 

reports of oil leakage at the engine 

feathering pump. The actions specified 

in that AD are intended to prevent oil 

loss from the feathering pump, which 

could cause the engine to shut down in 

flight. 

Actions Since AD Was Issued 

Since we issued that AD, Fokker 

Services B.V. conducted a voluntary 

controlled service introduction of an 

improved outlet port (high-pressure) 

bobbin part number (P/N) 638005637 to 

replace bobbin P/N 638005614. 

The preamble to AD 2005–20–21 

specifies that we consider the 

requirements ‘‘interim action.’’ That AD 

explains that we might consider further 

rulemaking if final action is later 

identified. The manufacturer now has 

developed such a modification, and we 

have determined that further 

rulemaking is indeed necessary; this AD 

follows from that determination. 

Relevant Service Information 

Fokker Services B.V. has issued 

Service Bulletin SBF50–61–025, dated 

July 4, 2007. The service bulletin 

describes procedures for replacing the 

existing outlet port (high-pressure) 

bobbin with a new, improved outlet port 

(high-pressure) bobbin. The improved 

bobbin design uses a gasket that 

significantly reduces the risk of seal 

failure caused by extrusion of part of the 

seal. Accomplishing the actions 

specified in the service information is 

intended to adequately address the 

unsafe condition. 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, mandated the service 

information and issued EASA 

Airworthiness Directive 2007–0203, 

dated August 1, 2007, to ensure the 

continued airworthiness of these 

airplanes in Europe. 

FAA’s Determination and Requirements 

of This AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are issuing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Therefore, we are issuing this AD to 

supersede AD 2005–20–21. This new 

AD retains the requirements of the 

existing AD. This AD also requires 

replacing the outlet port (high-pressure) 

bobbin with a new, improved outlet port 

(high-pressure) bobbin, which 

terminates the requirements of the AD. 

Costs of Compliance 

None of the airplanes affected by this 

action are on the U.S. Register. All 

airplanes affected by this AD are 

currently operated by non-U.S. 

operators under foreign registry; 

therefore, they are not directly affected 

by this AD action. However, we 

consider this AD necessary to ensure 

that the unsafe condition is addressed if 

any affected airplane is imported and 

placed on the U.S. Register in the future. 

The following table provides the 

estimated costs to comply with this AD 

for any affected airplane that might be 

imported and placed on the U.S. 

Register in the future. 

ESTIMATED COSTS

Action Work 

hours 

Average 

labor rate 

per hour 

Cost of 

parts Cost per airplane 

Pre-flight check, per cycle (required by AD 2005–20–21) ............................. 1 $80 $0 $80 per cycle. 

Detailed inspection, per inspection cycle (required by AD 2005–20–21) ...... 1 80 0 $80 per inspection cycle. 

Bobbin replacement (new required action) .................................................... 8 80 468 $1,108. 

FAA’s Determination of the Effective 

Date 

No airplane affected by this AD is 

currently on the U.S. Register. 

Therefore, providing notice and 

opportunity for public comment is 

unnecessary before this AD is issued, 

and this AD may be made effective in 

less than 30 days after it is published in 

the Federal Register. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety, and 

we did not provide you with notice and 

an opportunity to provide your 

comments before it becomes effective. 

However, we invite you to send any 

written data, views, or arguments about 

this AD. Send your comments to an 

address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2009–0224; Directorate Identifier 2007– 

NM–302–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this AD. We will consider all 

comments received by the closing date 

and may amend this AD because of 

those comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this AD. 

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 

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12240 Federal Register / Vol. 74, No. 55 / Tuesday, March 24, 2009 / Rules and Regulations 

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 the regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

See the ADDRESSES section for a location 

to examine the regulatory evaluation. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, 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 Federal Aviation 

Administration (FAA) amends § 39.13 

by removing amendment 39–14317 (70 

FR 58300, October 6, 2005) and adding 

the following new AD: 

2009–06–15 Fokker Services B.V.: 

Amendment 39–15852. Docket No. 

FAA–2009–0224; Directorate Identifier 

2007–NM–302–AD. 

Effective Date 

(a) This AD becomes effective April 8, 

2009. 

Affected ADs 

(b) This AD supersedes AD 2005–20–21. 

Applicability 

(c) This AD applies to Fokker Model F.27 

Mark 050 airplanes, certificated in any 

category, as identified in Fokker Service 

Bulletin SBF50–61–025, dated July 4, 2007, 

unless engines that are installed have 

previously been modified in accordance with 

Fokker Service Bulletin SBF50–61–024. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 61: Propellers/propulsors. 

Unsafe Condition 

(e) This AD results from reports of oil 

leakage at the engine feathering pump. We 

are issuing this AD to prevent oil loss from 

the feathering pump, which could cause the 

engine to shut down in flight. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Restatement of the Requirements of AD 

2005–20–21: 

Pre-Flight Checks 

(g) Before the next flight after October 21, 

2005 (the effective date of AD 2005–20–21): 

Do a visual check for oil leaks between the 

spinner and the engine cowling, and from 

directly behind the heated intake lip, of both 

engines, in accordance with Fokker All 

Operator Message (AOM) AOF50.037 (Ref 

TS04.57535), dated November 2, 2004. 

Repeat the visual check thereafter before each 

flight, until the terminating action required 

by paragraph (m) of this AD is done. If any 

leak is found, before further flight, do the 

action in paragraph (h) of this AD, except as 

required by paragraph (j) of this AD. 

Repetitive Detailed Inspections 

(h) Except as required by paragraph (g) of 

this AD, at the applicable time in paragraph 

(h)(1) or (h)(2) of this AD: Do a detailed 

inspection for oil leaks at the feathering 

pump on both engines and do any applicable 

corrective action before further flight, except 

as required by paragraph (j) of this AD. Do 

all actions in accordance with the 

Accomplishment Instructions of Fokker 

Service Bulletin SBF50–61–023, dated 

November 3, 2004. Repeat the detailed 

inspection thereafter at the applicable 

interval in paragraph (h)(1) or (h)(2) of this 

AD, until the terminating action required by 

paragraph (m) of this AD is done. 

(1) For airplanes identified in paragraph 

1.A. ‘‘Effectivity,’’ sub-paragraph (1) of 

Fokker Service Bulletin SBF50–61–023, 

dated November 3, 2004: Do the first 

inspection before the next flight after October 

21, 2005, and repeat the inspection thereafter 

before each flight. 

(2) For airplanes identified in paragraph 

1.A. ‘‘Effectivity,’’ sub-paragraph (2) of 

Fokker Service Bulletin SBF50–61–023, 

dated November 3, 2004: Do the first 

inspection within 32 flight hours after 

October 21, 2005, and repeat the inspection 

thereafter at intervals not to exceed 32 flight 

hours. 

Note 1: For the purposes of this AD, a 

detailed inspection is: ‘‘An intensive 

examination of a specific item, installation, 

or assembly to detect damage, failure, or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at an intensity deemed appropriate. 

Inspection aids such as mirror, magnifying 

lenses, etc., may be necessary. Surface 

cleaning and elaborate procedures may be 

required.’’ 

No Reporting Requirement 

(i) Although Fokker AOM AOF50.037 (Ref 

TS04.57535), dated November 2, 2004, 

specifies that operators should report cases of 

oil leakage and send failed O-rings to Fokker 

Services B.V., this AD does not include that 

requirement. 

New Requirements of This AD 

New Corrective Action 

(j) As of the effective date of this AD: If 

during any inspection required by paragraph 

(g) or (h) of this AD, oil leakage is found at 

the feathering pump mounting pad of an 

engine, before further flight, replace bobbin 

part number (P/N) 638005614 with bobbin P/ 

N 638005637 and install a gasket on the 

feathering pump of that engine, in 

accordance with the Accomplishment 

Instructions of Fokker Service Bulletin 

SBF50–61–025, dated July 4, 2007. 

(k) After accomplishing the actions in 

paragraph (j), no person may replace an 

engine with one that has not been modified 

according to Fokker Service Bulletin SBF50– 

61–025, dated July 4, 2007. 

(l) As of 24 months after the effective date 

of this AD, no person may install an engine 

on any airplane, unless it has been modified 

according to Fokker Service Bulletin SBF50– 

61–025, dated July 4, 2007. 

Terminating Action 

(m) Within 24 months after the effective 

date of this AD: Replace the outlet port (highpressure) bobbin P/N 638005614 with a new, 

improved outlet port (high-pressure) bobbin 

P/N 638005637 and install a gasket on the 

feathering pump of that engine, in 

accordance with the Accomplishment 

Instructions of Fokker Service Bulletin 

SBF50–61–025, dated July 4, 2007. Doing the 

replacement required by this paragraph on 

both engines terminates the requirements of 

this AD. 

Special Flight Permit 

(n) Special flight permits, as described in 

Section 21.197 and Section 21.199 of the 

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Federal Register / Vol. 74, No. 55 / Tuesday, March 24, 2009 / Rules and Regulations 12241 

Federal Aviation Regulations (14 CFR 21.197 

and 21.199), are not allowed. 

Alternative Methods of Compliance 

(AMOCs) 

(o)(1) The Manager, International Branch, 

ANM–116, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. Send 

information to Attn: Tom Rodriguez, 

Aerospace Engineer, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone (425) 

227–1137; fax (425) 227–1149. 

(2) Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. 

Related Information 

(p) European Aviation Safety Agency 

Airworthiness Directive 2007–0203, dated 

August 1, 2007, also addresses the subject of 

this AD. 

Material Incorporated by Reference 

(q) You must use the service information 

identified in Table 1 of this AD, as 

applicable, to perform the actions that are 

required by this AD, unless the AD specifies 

otherwise. 

TABLE 1—ALL MATERIAL INCORPORATED BY REFERENCE

Service information Date 

Fokker All Operator Message AOF50.037 (Ref TS04.57535) ....................................................................................... November 2, 2004. 

Fokker Service Bulletin SBF50–61–023 ......................................................................................................................... November 3, 2004. 

Fokker Service Bulletin SBF50–61–025 ......................................................................................................................... July 4, 2007. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

Fokker Service Bulletin SBF50–61–025, 

dated July 4, 2007, in accordance with 5 

U.S.C. 552(a) and 1 CFR part 51. 

(2) On October 21, 2005 (70 FR 58300, 

October 6, 2005), the Director of the Federal 

Register approved the incorporation by 

reference of Fokker Service Bulletin SBF50– 

61–023, dated November 3, 2004; and Fokker 

All Operator Message AOF50.037 (Ref 

TS04.57535), dated November 2, 2004. 

(3) For service information identified in 

this AD, contact Fokker Services B.V., 

Technical Services Dept., P.O. Box 231, 2150 

AE Nieuw-Vennep, the Netherlands; 

telephone +31 (0)252–627–350; fax +31 

(0)252–627–211; e-mail 

technicalservices.fokkerservices@stork.com; 

Internet http://www.myfokkerfleet.com. 

(4) You may review copies of the 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 or 425–227–1152. 

(5) You may also review copies of the 

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/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on February 

27, 2009. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–5958 Filed 3–23–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–1103; Directorate 

Identifier 2008–NM–048–AD; Amendment 

39–15846; AD 2009–06–10] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 727–100 and 727–200 Series 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Boeing Model 727–100 and 727–200 

series airplanes. This AD requires 

repetitive internal and external high 

frequency eddy current, mid frequency 

eddy current, low frequency eddy 

current, and magneto optic imaging 

inspections to detect cracks, corrosion, 

delamination, and materials loss in the 

lower fastener row of the lower skin and 

the upper fastener row of the upper 

skin, and corrective actions if necessary. 

This AD results from a report of 

decompression in a Boeing Model 737 

airplane at flight level 290. We are 

issuing this AD to detect and correct 

scratches and excessive reduction in 

material thickness from excessive blendout or corrosion, which could lead to 

premature cracking in the lap joint. 

Such cracking could adversely affect the 

structural integrity of the airplane. 

DATES: This AD is effective April 28, 

2009. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of April 28, 2009. 

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; e-mail 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. 

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 (telephone 800–647–5527) 

is the 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: 

Berhane Alazar, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, 

Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6577; fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to 

certain Boeing Model 727–100 and 727– 

200 series airplanes. That NPRM was 

published in the Federal Register on 

October 17, 2008 (73 FR 61747). That 

NPRM proposed to require repetitive 

internal and external high frequency 

eddy current, mid frequency eddy 

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