38950 Federal Register / Vol. 75, No. 129 / Wednesday, July 7, 2010 / Proposed Rules 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(j) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, Transport Airplane 

Directorate, 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: Vladimir 

Ulyanov, Aerospace Engineer, International 

Branch, ANM–116, Transport Airplane 

Directorate, FAA, 1601 Lind Avenue, SW., 

Renton, Washington 98057–3356; telephone 

(425) 227–1138; fax (425) 227–1149. 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. 

The AMOC approval letter must specifically 

reference this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(k) Refer to MCAI EASA Airworthiness 

Directive 2010–0016R1, dated February 9, 

2010, and the service information identified 

in Table 2 of this AD, for related information. 

TABLE 2—RELATED SERVICE INFORMATION

Document Revision Date 

Airbus Mandatory Service Bulletin A330–34–3232 ............................................. Original .................................................. January 20, 2010. 

Airbus Mandatory Service Bulletin A340–34–4239 ............................................. Original .................................................. January 20, 2010. 

Airbus Mandatory Service Bulletin A340–34–5072 ............................................. Original .................................................. January 20, 2010. 

Thales Service Bulletin C16291A–34–007 .......................................................... Revision 01 ........................................... December 3, 2009. 

Issued in Renton, Washington, on June 25, 

2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–16553 Filed 7–6–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0677; Directorate 

Identifier 2010–NM–075–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 727 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Model 727 airplanes. This proposed AD 

would require inspections for scribe 

lines in the fuselage skin at skin lap 

joints and butt joints, the skin at certain 

external approved repairs, the skin 

around external features such as 

antennas, and the skin at decals and 

fairings; and related investigative and 

corrective actions if necessary. This 

proposed AD results from reports of 

scribe lines found at skin lap joints and 

butt joints, around external repairs and 

antennas, and at locations where 

external decals had been cut. We are 

proposing this AD to detect and correct 

scribe lines, which can develop into 

fatigue cracks in the skin and cause 

rapid decompression of the airplane. 

DATES: We must receive comments on 

this proposed AD by August 23, 2010. 

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 proposed 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. 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 proposed 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: 

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: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2010–0677; Directorate Identifier 

2010–NM–075–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

We will post all comments we 

receive, without change, to http:// 


cprice-sewell on DSK8KYBLC1PROD with PROPOSALS-1
Federal Register / Vol. 75, No. 129 / Wednesday, July 7, 2010 / Proposed Rules 38951 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

We have received reports of scribeline-related cracking on 2 Model 727 

airplanes. One report was on a 727–100 

airplane with 44,171 flight cycles. The 

crack was near a repair and caused 

rapid decompression of the airplane. 

Another report was on a 727–100 

airplane with 51,195 flight cycles. The 

crack was at station 1090–1110, stringer 

4L lap joint. This crack also caused 

rapid decompression of the airplane. 

This condition, if not corrected, could 

result in fatigue cracks developing in 

the skin at scribe line locations. Fatigue 

cracks, if not corrected, could grow large 

and cause rapid decompression of the 

airplane. 

Related ADs 

This proposed AD is similar to four 

existing ADs. AD 2010–05–13, 

Amendment 39–16223 (75 FR 13225, 

March 19, 2010), applies to Boeing 

Model 737–100, –200, –200C, –300, 

–400, and, –500 series airplanes. AD 

2007–19–07, Amendment 39–15198 (72 

FR 60244, October 24, 2007), applies to 

certain Boeing Model 757–200, –200PF, 

and, –200CB series airplanes. AD 2009– 

24–08, Amendment 39–16096 (74 FR 

62217, November 27, 2009) applies to 

certain Boeing Model 777–200, –200LR, 

–300, and, –300ER series airplanes. AD 

2010–06–16, Amendment 39–16241 (75 

FR 12670, March 17, 2010) applies to 

certain Boeing Model 767 series 

airplanes. Those ADs require 

inspections to detect scribe lines in the 

fuselage skin at certain lap joints, 

around decal locations, external repair 

doublers, and other areas; and related 

investigative/corrective actions if 

necessary. Those actions resulted from 

reports of fuselage skin cracks adjacent 

to the skin lap joints on airplanes that 

had scribe lines. 

Relevant Service Information 

We have reviewed Boeing Alert 

Service Bulletin 727–53A0233, dated 

February 19, 2010. This service bulletin 

describes procedures for detailed 

inspections to detect scribe lines along 

applicable skin lap joints, skin butt 

joints, external approved repairs, 

external features, decals, and fairings. 

This service bulletin specifies removing 

paint and sealant from affected areas 

before the initial detailed inspection. 

The compliance times for the initial 

detailed inspections range for certain 

airplane configurations from 30,000 to 

60,000 total accumulated flight cycles 

(depending on the inspection location), 

or within up to 36 months after the date 

of this service bulletin, whichever 

occurs later. For certain other airplane 

configurations, the initial detailed 

inspections range between 6 months 

and 24 months after the date of this 

service bulletin. 

This service bulletin specifies related 

investigative actions that include 

performing low or high frequency eddy 

current or ultrasonic inspections of the 

scribe lines to detect cracks, and this 

service bulletin specifies corrective 

actions as either repairing scribe lines 

and cracks or contacting Boeing for 

repair instructions and doing the repair. 

This service bulletin specifies 

repairing scribe lines before further 

flight, except when a limited return to 

service (LRTS) program for qualifying 

scribe lines would allow return to 

service for a limited period before scribe 

lines are repaired. The LRTS program 

includes repetitive inspections to detect 

cracks where scribe lines are found. To 

qualify for an LRTS program, scribe 

lines must meet certain criteria based on 

their depth and location. This service 

bulletin specifies contacting Boeing for 

final repair instructions, which would 

eliminate the need for the repetitive 

inspections of the LRTS program. The 

repetitive interval for the LRTS program 

ranges from 800 to 9,000 flight cycles, 

depending on the depth and location of 

the scribe lines and the configuration of 

the airplane. 

Boeing Alert Service Bulletin 727– 

53A0233, dated February 19, 2010, 

notes that certain inspections would not 

be required under any of the following 

conditions: 

• The airplane had never been 

stripped or repainted. 

• The airplane had never been 

stripped or repainted under the wing-tobody fairings. 

• The airplane has never had any 

decals installed in inspection areas 

since delivery. 

• The existing repairs on the airplane 

span at least 3 rows above/forward and 

3 rows below/aft of potential scribe 

lines on lap joints and butt joints. 

Boeing Alert Service Bulletin 727– 

53A0233, dated February 19, 2010, 

specifies submitting the inspection 

results to Boeing. 

FAA’s Determination and Requirements 

of This Proposed AD 

We are proposing this AD because we 

evaluated all relevant information and 

determined the unsafe condition 

described previously is likely to exist or 

develop in other products of these same 

type designs. This proposed AD would 

require accomplishing the actions 

specified in the service information 

described previously, except as 

discussed under ‘‘Differences Between 

the Proposed AD and Service Bulletin.’’ 

The proposed AD would also require 

sending the inspection results to the 

manufacturer. 

Differences Between the Proposed AD 

and Service Bulletin 

The service bulletin specifies to 

contact the manufacturer for 

instructions on how to repair certain 

conditions, but this proposed AD would 

require repairing those conditions in 

one of the following ways: 

• Using a method that we approve; or 

• Using data that meet the 

certification basis of the airplane, and 

that have been approved by the Boeing 

Commercial Airplanes Organization 

Designation Authorization (ODA) whom 

we have authorized to make those 

findings. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 234 airplanes of U.S. 

registry. The following table provides 

the estimated costs for U.S. operators to 

comply with this proposed AD. 

TABLE—ESTIMATED COSTS

Action Work hours Average labor rate 

per hour Parts Cost per product 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Inspection Up to 320 hours $85 $0 Up to $27,200 234 Up to $6,364,800. 


cprice-sewell on DSK8KYBLC1PROD with PROPOSALS-1
38952 Federal Register / Vol. 75, No. 129 / Wednesday, July 7, 2010 / Proposed Rules 

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 determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

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

DOT Regulatory Policies and Procedures 

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

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

You can find our regulatory 

evaluation and the estimated costs of 

compliance in the AD Docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new AD: 

The Boeing Company: Docket No. FAA– 

2010–0677; Directorate Identifier 2010– 

NM–075–AD. 

Comments Due Date 

(a) We must receive comments by August 

23, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 727, 727C, 727–100, 727– 

100C, 727–200, and 727–200F series 

airplanes, certificated in any category; as 

identified in Boeing Alert Service Bulletin 

727–53A0233, dated February 19, 2010. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 53: Fuselage. 

Unsafe Condition 

(e) This AD results from reports of scribe 

lines found at skin lap joints, butt joints, 

around external repairs and antennas, and at 

locations where external decals had been cut. 

The Federal Aviation Administration is 

issuing this AD to detect and correct scribe 

lines, which can develop into fatigue cracks 

in the skin and cause rapid decompression of 

the airplane. 

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. 

Inspection 

(g) At the applicable times specified in 

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

Service Bulletin 727–53A0233, dated 

February 19, 2010 (‘‘the service bulletin’’), 

except as provided in paragraphs (h) and (i) 

Of this AD, do detailed inspections for scribe 

lines of skin lap joints, skin butt joints, 

around external approved repairs, external 

features, and fairings, and at locations where 

external decals may have been cut, and do all 

applicable related investigative and 

corrective actions at the times specified in 

the service bulletin, by accomplishing all 

actions specified in the Accomplishment 

Instructions of the service bulletin, except as 

provided by paragraph (j) of this AD. 

Note 1: The inspection exemptions noted 

in paragraph 1.E. of Boeing Alert Service 

Bulletin 727–53A0233, dated February 19, 

2010, apply to this AD. 

Exceptions to Service Bulletin Specifications 

(h) Where Boeing Alert Service Bulletin 

727–53A0233, dated February 19, 2010, 

specifies a compliance time after ‘‘the original 

issue date on this service bulletin,’’ this AD 

requires compliance within the specified 

compliance time after the effective date of 

this AD. 

(i) Where Boeing Alert Service Bulletin 

727–53A0233, dated February 19, 2010, 

specifies to calculate the flight-cycle time for 

an airplane ‘‘as of the original issue date on 

this service bulletin,’’ this AD requires the 

airplane flight-cycle time to be calculated as 

of the effective date of this AD. 

(j) Where Boeing Alert Service Bulletin 

727–53A0233, dated February 19, 2010, 

specifies to contact Boeing for appropriate 

action, accomplish applicable actions before 

further flight using a method approved in 

accordance with the procedures specified in 

paragraph (l) of this AD. 

Report 

(k) At the applicable time specified in 

paragraph (k)(1) or (k)(2) of this AD: Submit 

a report of positive crack findings of the 

inspections required by paragraph (g) of this 

AD. Operators may use the reporting form 

contained in Appendixes B and C, as 

applicable, of Boeing Alert Service Bulletin 

727–53A0233, dated February 19, 2010. Send 

the report to Boeing Commercial Airplanes, 

P.O. Box 3707, Seattle, Washington 98124– 

2207. The report must contain, at a 

minimum, the inspection results, a 

description of any discrepancies found, the 

airplane serial number, and the number of 

flight cycles and flight hours on the airplane. 

Under the provisions of the Paperwork 

Reduction Act (44 U.S.C. 3501 et seq.), the 

Office of Management and Budget (OMB) has 

approved the information collection 

requirements contained in this AD and has 

assigned OMB Control Number 2120–0056. 

(1) If the inspection was done on or after 

the effective date of this AD: Submit the 

report within 30 days after the inspection. 

(2) If the inspection was done before the 

effective date of this AD: Submit the report 

within 30 days after the effective date of this 

AD. 

Alternative Methods of Compliance 

(AMOCs) 

(l)(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. 

Send information to ATTN: 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. 

Information may be e-mailed to: 9-ANMSeattle-ACO-MOC-Requests@faa.gov. 

(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 principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. The AMOC approval letter must 

specifically reference this AD. 

(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. 


cprice-sewell on DSK8KYBLC1PROD with PROPOSALS-1
Federal Register / Vol. 75, No. 129 / Wednesday, July 7, 2010 / Proposed Rules 38953 

Issued in Renton, Washington, on June 29, 

2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–16552 Filed 7–6–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0673; Directorate 

Identifier 2009–NM–208–AD] 

RIN 2120–AA64 

Airworthiness Directives; BAE 

Systems (OPERATIONS) LIMITED 

Model BAe 146 and Avro 146–RJ 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above that would 

supersede an existing AD. This 

proposed AD results from mandatory 

continuing airworthiness information 

(MCAI) originated by an aviation 

authority of another country to identify 

and correct an unsafe condition on an 

aviation product. The MCAI describes 

the unsafe condition as: In June 2000, 

prompted by a crack found at the top of 

the NLG [nose landing gear] oleo, BAE 

Systems (Operations) Ltd issued 

Inspection Service Bulletin (SB) 32–158. 

This SB was classified mandatory by the 

UK [United Kingdom] Civil Aviation 

Authority under AD number 002–06– 

2000, requiring repetitive nondestructive testing (NDT) inspections for 

cracking on the upper end of the NLG 

oleo. The AD also provided an optional 

terminating action for the repetitive 

inspections, by embodiment of MessierDowty SB.146–32–150. As part of a 

recent accident investigation, the 

examination of a fractured NLG main 

fitting showed that Messier-Dowty [M– 

D] SB.146–32–150 had not been 

accomplished, although the records 

indicated that it had been. BAE Systems 

has determined that more NLG units 

could be similarly affected. These NLG 

units have been overhauled at Messier 

Services in Sterling, Virginia, in the 

United States. This condition, if not 

corrected, could result in NLG failure. 

Subsequently, investigation and 

analysis by M–D has identified the need 

for a reduction of the inspection 

threshold and the repetitive inspection 

interval for the affected NLG units and 

has replaced M–D SB 146–32–149 with 

M–D SB 146–32–174. The unsafe 

condition is cracking of the NLG, which 

could adversely affect the airplane’s safe 

landing. The proposed AD would 

require actions that are intended to 

address the unsafe condition described 

in the MCAI. 

DATES: We must receive comments on 

this proposed AD by August 23, 2010. 

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 

W12–40, 1200 New Jersey Avenue, SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For BAE SYSTEMS (Operations) 

Limited service information identified 

in this proposed AD, contact BAE 

Systems (Operations) Ltd, Customer 

Information Department, Prestwick 

International Airport, Ayrshire, KA9 

2RW, Scotland, United Kingdom; 

telephone +44 1292 675704; e-mail 

RApublications@baesystems.com; 

Internet http://www.baesystems.com/ 

Businesses/RegionalAircraft/index.htm. 

For Messier-Dowty, contact Messier 

Services Americas, Customer Support 

Center, 45360 Severn Way, Sterling, 

Virginia 20166–8910; telephone 703– 

450–8233; fax 703–404–1621; Internet 

https://techpubs.services.messierdowty.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 Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

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: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1175; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2010–0673; Directorate Identifier 

2009–NM–208–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We have lengthened the 30-day 

comment period for proposed ADs that 

address MCAI originated by aviation 

authorities of other countries to provide 

adequate time for interested parties to 

submit comments. The comment period 

for these proposed ADs is now typically 

45 days, which is consistent with the 

comment period for domestic transport 

ADs. 

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 proposed AD. 

Discussion 

On February 6, 2002, we issued AD 

2002–03–10, Amendment 39–12651 (67 

FR 6855, February 14, 2002). That AD 

required actions intended to address an 

unsafe condition on the products listed 

above. 

Since we issued AD 2002–03–10, 

investigation and analysis by MessierDowty has identified the need for a 

reduction of the inspection threshold 

and the repetitive inspection interval for 

the affected nose landing gear (NLG) 

units, and has replaced Messier-Dowty 

Service Bulletin 146–32–149, dated 

April 17, 2000, with Messier-Dowty 

Service Bulletin 146–32–174, Revision 

1, dated September 2, 2009. The 

European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Airworthiness Directive 2010–0001–E, 

dated January 4, 2010 (referred to after 

this as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 


cprice-sewell on DSK8KYBLC1PROD with PROPOSALS-1