74668 Federal Register / Vol. 75, No. 230 / Wednesday, December 1, 2010 / Proposed Rules 

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 

(o) Refer to MCAI European Aviation 

Safety Agency (EASA) Airworthiness 

Directive 2010–0070, dated April 14, 2010; 

and the service information specified in 

Table 1 of this AD; as applicable; for related 

information. 

TABLE 1—SERVICE INFORMATION

Document Revision Date 

Airbus All Operators Telex A300–25A6215 .................................................................. 02 ................................................. March 2, 2009. 

Airbus All Operators Telex A310–25A2203 .................................................................. 02 ................................................. March 2, 2009. 

Airbus Mandatory Service Bulletin A300–25–6217 ....................................................... Original ........................................ August 31, 2009. 

Airbus Mandatory Service Bulletin A310–25–2205 ....................................................... Original ........................................ August 31, 2009. 

EADS SOGERMA Alert Service Bulletin A2510112–25–764 ....................................... 1 ................................................... February 17, 2009. 

EADS SOGERMA Inspection Service Bulletin A2510112–25–807 .............................. Original ........................................ February 20, 2009. 

Issued in Renton, Washington, on 

November 18, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–30135 Filed 11–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1156; Directorate 

Identifier 2010–NM–128–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 777–200, –200LR, 

–300, and –300ER Series 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 777–200, –200LR, –300, and 

–300ER series airplanes. This proposed 

AD would require repetitive detailed 

inspections for disbonding and tearing 

and measurements for wear of the 

internal diameter (ID) of the Karon-lined 

bushings of the bulkhead support 

jackscrew fitting and of the jackscrew 

fitting of the horizontal stabilizer; 

repetitive installations of the horizontal 

stabilizer trim actuator (HSTA); and if 

necessary, replacement of the bushings 

with new bushings and all applicable 

related investigative and corrective 

actions. This proposed AD results from 

a report indicating that a Karon-lined 

bushing with the liner broken into five 

pieces was found during a scheduled 

inspection of the HSTA components; 

the broken liner had worn and 

disbonded from the bushing. We are 

proposing this AD to detect and correct 

discrepancies of the HSTA attachment 

locations, which could result in reduced 

structural integrity of the horizontal 

stabilizer and consequent loss of 

controllability of the airplane. 

DATES: We must receive comments on 

this proposed AD by January 18, 2011. 

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: 

Duong Tran, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6452; 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–2010–1156; Directorate Identifier 

2010–NM–128–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:// 

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. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 230 / Wednesday, December 1, 2010 / Proposed Rules 74669 

Discussion 

We received a report indicating that a 

Karon-lined bushing with the liner 

broken into five pieces was found 

during a scheduled inspection of the 

horizontal stabilizer trim actuator 

(HSTA) components; the broken liner 

had worn and disbonded from the 

bushing. The broken liner was found on 

a 777–200 airplane that had 

accumulated 35,145 total flight hours 

and 5,335 total flight cycles. Analysis by 

the manufacturer revealed that the 

broken liner was one of 149 bushings on 

which an early manufacturing process 

was used; that process has since been 

improved. Further investigation and 

analysis by the manufacturer shows that 

Karon-lined bushings in the HSTA and 

HSTA attachment locations on the 

airplane structure using both the early 

and the improved process are 

susceptible to wear in service. The 

analysis also shows that the wear may 

cause excessive joint clearance which 

could lead to fatigue cracking of the 

pins. This condition, if not corrected, 

could result in reduced structural 

integrity of the horizontal stabilizer and 

consequent loss of controllability of the 

airplane. 

Relevant Service Information 

We have reviewed Boeing Alert 

Service Bulletin 777–55A0017, dated 

May 20, 2010, which describes 

procedures for: 

• Repetitive detailed inspections for 

disbonding and tearing and 

measurements for wear of the internal 

diameter (ID) of the Karon-lined 

bushings of the bulkhead support 

jackscrew fitting; and replacement of the 

bushings with new bushings if 

necessary: The replacement includes 

related investigative and corrective 

actions, if necessary. The related 

investigative actions include a surface 

high-frequency eddy current inspection 

for cracking of the inner surface of the 

hole, and measurement of the ID, of the 

intermediate sleeve. The corrective 

action for cracking of the intermediate 

sleeve or measurements outside the ID 

specified in the service bulletin is 

replacement of the intermediate sleeve, 

including related investigative and 

corrective actions if necessary. The 

related investigative actions include a 

surface high-frequency eddy current 

inspection for cracking of the inner 

surface of the hole, and measurement of 

the ID of the hole of the bulkhead 

support jackscrew fitting. The corrective 

action for cracking of the bulkhead 

support jackscrew fitting or 

measurements outside the ID specified 

in the service bulletin is contacting 

Boeing. 

• Repetitive detailed inspections for 

disbonding and tearing and 

measurements for wear of the internal 

diameter (ID) of the Karon-lined 

bushings of the jackscrew fitting of the 

horizontal stabilizer; and replacement of 

the bushings with new bushings if 

necessary. 

• Repetitively installing either a 

known serviceable or overhauled HSTA. 

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 the same 

type design. This proposed AD would 

require accomplishing the actions 

specified in the service information 

described previously, except as 

discussed under ‘‘Difference Between 

the Proposed AD and Service 

Information.’’ 

Difference Between the Proposed AD 

and Service Information 

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 an 

Authorized Representative for the 

Boeing Commercial Airplanes 

Organization Designation Authorization 

whom we have authorized to make 

those findings. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 145 airplanes of U.S. 

registry. We also estimate that it would 

take about 7 work-hours per product to 

comply with the detailed inspection, 

measurement, and installation in this 

proposed AD. The average labor rate is 

$85 per work-hour. Based on these 

figures, we estimate the cost of this 

proposed AD to the U.S. operators to be 

$86,275, or $595 per product. 

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– 

2010–1156; Directorate Identifier 2010– 

NM–128–AD. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
74670 Federal Register / Vol. 75, No. 230 / Wednesday, December 1, 2010 / Proposed Rules 

Comments Due Date 

(a) We must receive comments by January 

18, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 777–200, –200LR, –300, and 

–300ER series airplanes, certificated in any 

category, as identified in Boeing Alert 

Service Bulletin 777–55A0017, dated May 

20, 2010. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 55: Stabilizers. 

Unsafe Condition 

(e) This AD results from a report indicating 

that a Karon-lined bushing with the liner 

broken into five pieces was found during a 

scheduled inspection of the horizontal 

stabilizer trim actuator (HSTA) components; 

the broken liner had worn and disbonded 

from the bushing. The Federal Aviation 

Administration is issuing this AD to detect 

and correct discrepancies of the HSTA 

attachment locations, which could result in 

reduced structural integrity of the horizontal 

stabilizer and consequent loss of 

controllability 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/Related Investigative and 

Corrective Actions 

(g) Before the accumulation of 32,000 total 

flight cycles, or within 24 months after the 

effective date of this AD, whichever occurs 

later: Do a detailed inspection for disbonding 

and tearing, and a measurement for wear of 

the internal diameter (ID) of the Karon-lined 

bushings of the bulkhead support jackscrew 

fitting and of the jackscrew fitting of the 

horizontal stabilizer; replace bushings with 

new bushings, as applicable; do all 

applicable related investigative and 

corrective actions; and install either a known 

serviceable or overhauled HSTA. Do the 

actions in accordance with the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 777–55A0017, dated May 

20, 2010, except as provided by paragraph (h) 

of this AD. Do all applicable related 

investigative and corrective actions before 

further flight. Repeat the actions required by 

this paragraph thereafter at intervals not to 

exceed 16,000 flight cycles. 

Exceptions to Corrective Actions 

(h) If, during any inspection or 

measurement required by this AD, any 

damage is found, or the inner diameter is 

greater than the allowable hole diameter, and 

Part 1, Step 3.B.2.a.(1)(a)1)a) of the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 777–55A0017, dated May 

20, 2010, specifies to contact Boeing for 

appropriate action: Before further flight, do 

the repair using a method approved in 

accordance with the procedures specified in 

paragraph (i) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(i)(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. Send information to ATTN: 

Duong Tran, Aerospace Engineer, Airframe 

Branch, ANM–120S, FAA, Seattle ACO, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 917–6452; fax 

(425) 917–6590. Or information may be 

e-mailed to: 9-ANM-Seattle-ACO-AMOCRequests@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. 

Issued in Renton, Washington, on 

November 15, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–30138 Filed 11–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1161; Directorate 

Identifier 2010–NM–152–AD] 

RIN 2120–AA64 

Airworthiness Directives; Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER) Model ERJ 170 and ERJ 

190 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. 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: 

It has been found occurrence of screw units 

manufactured with metallographic nonconformity that may increase their 

susceptibility to brittle fracture. The screw 

failure may result in loss of the related 

balance washer causing a possible ram air 

turbine (RAT) imbalance event, which may 

result in RAT structural failure, which 

associated with an electrical emergency 

situation, could result in loss of power to 

airplane flight controls hydraulic back-up 

system. 

* * * * * 

Loss of power to the hydraulic back-up 

system for airplane flight controls could 

reduce the ability of the flightcrew to 

maintain the safe flight and landing of 

the airplane. 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 January 18, 2011. 

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 service information identified in 

this proposed AD, contact Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER), Technical Publications 

Section (PC 060), Av. Brigadeiro Faria 

Lima, 2170–Putim–12227–901 Sa ̃o Jose 

dos Campos–SP–BRASIL; telephone: 

+55 12 3927–5852 or +55 12 3309–0732; 

fax: +55 12 3927–7546; e-mail: 

distrib@embraer.com.br; Internet: http:// 

www.flyembraer.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, 


jlentini on DSKJ8SOYB1PROD with PROPOSALS