This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

54139 

Vol. 76, No. 169 

Wednesday, August 31, 2011 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0911; Directorate 

Identifier 2010–NM–248–AD] 

RIN 2120–AA64 

Airworthiness Directives; BAE 

SYSTEMS (Operations) Limited Model 

4101 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: 

A door failure mode has been reported by 

an operator. 

Investigation has shown that the 

passenger/crew entry door pin-guide plates 

can fail prior to the expected fatigue life. A 

metallurgical examination of the failed 

component (lower guide plate) concluded 

that the occurred failure was due to 

exfoliation corrosion. 

The current inspection regime is not 

adequate to identify early stages of this 

corrosion. 

This condition, if not corrected, can lead 

to the sudden depressurisation of the 

aeroplane and consequently may injure the 

occupants. 

* * * * * 

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 October 17, 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 BAE 

SYSTEMS (Operations) Limited, 

Customer Information Department, 

Prestwick International Airport, 

Ayrshire, KA9 2RW, Scotland, United 

Kingdom; telephone +44 1292 675207; 

fax +44 1292 675704; e-mail 

RApublications@baesystems.com; 

Internet http://www.baesystems.com/ 

Businesses/RegionalAircraft/index.htm. 

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–2011–0911; Directorate Identifier 

2010–NM–248–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 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 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Airworthiness Directive 2010–0179, 

dated August 30, 2010 (referred to after 

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

condition for the specified products. 

The MCAI states: 

A door failure mode has been reported by 

an operator. 

Investigation has shown that the 

passenger/crew entry door pin-guide plates 

can fail prior to the expected fatigue life. A 

metallurgical examination of the failed 

component (lower guide plate) concluded 

that the occurred failure was due to 

exfoliation corrosion. 

The current inspection regime is not 

adequate to identify early stages of this 

corrosion. 

This condition, if not corrected, can lead 

to the sudden depressurisation of the 

aeroplane and consequently may injure the 

occupants. 

For the reasons described above, this 

[EASA] AD requires immediate and periodic 

ultrasonic inspections [for a split caused by 

exfoliation corrosion] of the door pin guides 

and the accomplishment of the relevant 

corrective actions [replacing the affected 

guideplates] as necessary. 

You may obtain further information 

by examining the MCAI in the AD 

docket. 

Relevant Service Information 

BAE SYSTEMS (Operations) Limited 

has issued Service Bulletin J41–52–064, 

dated September 15, 2009. The actions 

described in this service information are 

intended to correct the unsafe condition 

identified in the MCAI. 


Emcdonald on DSK2BSOYB1PROD with PROPOSALS
54140 Federal Register / Vol. 76, No. 169 / Wednesday, August 31, 2011 / Proposed Rules 

FAA’s Determination and Requirements 

of This Proposed 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 proposing 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. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a NOTE within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 2 products of U.S. registry. 

We also estimate that it would take 

about 2 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Based on 

these figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$340, or $170 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 2 work-hours and require parts 

costing $525, for a cost of $1,050 per 

product. We have no way of 

determining the number of products 

that may need these actions. 

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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it 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: 

BAE SYSTEMS (Operations) Limited: Docket 

No. FAA–2011–0911; Directorate 

Identifier 2010–NM–248–AD. 

Comments Due Date 

(a) We must receive comments by October 

17, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to all BAE SYSTEMS 

(Operations) Limited Model 4101 airplanes; 

certificated in any category. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 52: Doors. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

A door failure mode has been reported by 

an operator. 

Investigation has shown that the 

passenger/crew entry door pin-guide plates 

can fail prior to the expected fatigue life. A 

metallurgical examination of the failed 

component (lower guide plate) concluded 

that the occurred failure was due to 

exfoliation corrosion. 

The current inspection regime is not 

adequate to identify early stages of this 

corrosion. 

This condition, if not corrected, can lead 

to the sudden depressurisation of the 

aeroplane and consequently may injure the 

occupants. 

* * * * * 

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. 

Actions 

(g) Within 6 months after the effective date 

of this AD, do an ultrasonic inspection of the 

passenger/crew door upper and lower guide 

plates for a split caused by exfoliation 

corrosion, in accordance with the 

Accomplishment Instructions of BAE 

SYSTEMS (Operations) Limited Service 

Bulletin J41–52–064, dated September 15, 

2009. Repeat the ultrasonic inspection, 

thereafter, at intervals not to exceed 48 

Months. 

(h) If a split caused by exfoliation corrosion 

of an area of 78mm2 (0.12 in.2) or greater is 

found during any ultrasonic inspection 

required by paragraph (g) of this AD: Before 

further flight, replace any affected guide 

plates with a serviceable guide plate, in 

accordance with the Accomplishment 

Instructions of BAE SYSTEMS (Operations) 

Limited Service Bulletin J41–52–064, dated 

September 15, 2009. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(i) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): 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. 

In accordance with 14 CFR 39.19, send your 


Emcdonald on DSK2BSOYB1PROD with PROPOSALS
Federal Register / Vol. 76, No. 169 / Wednesday, August 31, 2011 / Proposed Rules 54141 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the International Branch, send it to ATTN: 

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. Information may be e-mailed to: 9- 

ANM-116-AMOC-REQUESTS@faa.gov. 

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. 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. 

Related Information 

(j) Refer to MCAI European Aviation Safety 

Agency Airworthiness Directive 2010–0179, 

dated August 30, 2010; and BAE SYSTEMS 

(Operations) Limited Service Bulletin J41– 

52–064, dated September 15, 2009; for 

related information. 

Issued in Renton, Washington, on August 

23, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–22224 Filed 8–30–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0913; Directorate 

Identifier 2011–NM–031–AD] 

RIN 2120–AA64 

Airworthiness Directives; Cessna 

Aircraft Company Model 680 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 would require adding diodes to the 

fuel cross-feed wiring, and revising the 

airplane flight manual to include 

procedures to use when the left or right 

generator is selected OFF. This 

proposed AD was prompted by a false 

cross-feed command to the right-hand 

fuel control card, due to the cross-feed 

inputs on the left- and right-hand fuel 

control cards being connected together 

and causing an imbalance of fuel 

between the left and right wing tanks. 

We are proposing this AD to prevent 

lateral imbalance of the airplane, which 

can be corrected by deflecting the 

aileron trim, but which increases the 

pilot’s workload. Uncontrolled fuel 

cross-feed results in lateral imbalance 

that could exceed the airplane’s 

limitation in a short period of time. 

Exceeding the lateral imbalance limit 

could result in reduced control of the 

airplane. 

DATES: We must receive comments on 

this proposed AD by October 17, 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: Deliver to Mail 

address above between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Cessna 

Aircraft Co., P.O. Box 7706, Wichita, 

Kansas 67277; telephone 316–517–6215; 

fax 316–517–5802; e-mail 

citationpubs@cessna.textron.com; 

Internet https:// 

www.cessnasupport.com/newlogin.html. 

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 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Nhien Hoang, Aerospace Engineer, 

Electrical Systems and Avionics Branch, 

ACE–119W, FAA, Wichita Aircraft 

Certification Office, 1801 Airport Road, 

Room 100, Mid-Continent Airport, 

Wichita, Kansas 67209; phone: (316) 

946–4190; fax: (316) 946–4107; e-mail: 

nhien.hoang@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2011–0913; Directorate Identifier 2011– 

NM–031–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. 

Discussion 

We received a report that a Model 680 

airplane in flight displayed a DC EMER 

BUS L amber crew alerting system 

(CAS) message. Per the emergency/ 

abnormal procedures checklist, the 

flightcrew identified a fault on the left 

main electrical bus and selected the left 

generator to OFF. 

The co-pilot (flying the airplane due 

to the pilot’s primary flight display 

being disabled by the left generator OFF, 

which also disabled the left fuel 

quantity indication) observed that an 

increasing amount of right aileron 

control input was required to maintain 

a wings-level attitude. 

After the airplane safely landed, 

investigation showed that the left tank 

had 5,500 pounds of fuel (full) and the 

right tank 3,300 pounds. The flightcrew 

confirmed it had not selected the fuel 

cross-feed during flight. During the 20 

minutes that elapsed between selecting 

the left generator OFF and landing, 

sufficient fuel had migrated from the 

right to the left tank creating an 

imbalance of 2,200 pounds. The 

maximum permissible fuel imbalance 

for this airplane is 400 pounds. 

Loss of power on the left main 

electrical bus results in a false crossfeed command to the right-hand fuel 

control card, due to the cross-feed 

inputs on the left- and right-hand fuel 

control cards being connected together, 

thereby causing an imbalance of fuel 

between the left and right wing tanks. 


Emcdonald on DSK2BSOYB1PROD with PROPOSALS