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
54142 Federal Register / Vol. 76, No. 169 / Wednesday, August 31, 2011 / Proposed Rules 

This condition, if not corrected, could 

result in 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 will exceed the 

airplane’s limitation in a short period of 

time. Exceeding the lateral imbalance 

limit could result in reduced control of 

the airplane. 

Relevant Service Information 

We reviewed Cessna Service Bulletin 

SB680–24–11, including Service 

Bulletin Supplemental Data, dated 

December 16, 2010, which describes 

procedures for adding diodes to the fuel 

cross-feed wiring. We have also 

reviewed Cessna Temporary FAA 

Approved Airplane Flight Manual 

Change 68FM TC–R09–13, dated 

October 15, 2010, to the Cessna 680 

Citation Sovereign Airplane Flight 

Manual, which introduces procedures to 

use when the left or right generator is 

selected OFF. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of this same 

type design. 

Proposed AD Requirements 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. 

Costs of Compliance 

We estimate that this proposed AD 

affects 198 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost 

on U.S. 

operators 

Installation ............................... 4 work-hours × $85 per hour = $340 ..................................... $40 $380 $75,240 

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), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

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 airworthiness 

directive (AD): 

Cessna Aircraft Company: Docket No. FAA– 

2011–0913; Directorate Identifier 2011– 

NM–031–AD. 

Comments Due Date 

(a) We must receive comments by October 

17, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Cessna Aircraft 

Company Model 680 airplanes, certificated in 

any category, serial numbers –0001 through 

–0289 inclusive, and –0291 through –0296 

inclusive. 

Subject 

(d) Joint Aircraft System Component 

(JASC)/Air Transport Association (ATA) of 

America Code 24: Electrical power. 

Unsafe Condition 

(e) This AD was prompted by a false crossfeed command to the right-hand fuel control 

card, due to the cross-feed inputs on the leftand right-hand fuel control cards being 

connected together and causing an imbalance 

of fuel between the left and right wing tanks. 

We are issuing 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 and result 

in reduced controllability of the airplane. 

Compliance 

(f) Comply with this AD within the 

compliance times specified, unless already 

done. 

Installation 

(g) Within 400 flight hours or 12 months 

after the effective date of this AD, whichever 

occurs first: Install a kit, part number (P/N) 

SB680–24–11, to the left and right motive 

flow relays, in accordance with the 

Accomplishment Instructions of Cessna 

Service Bulletin SB680–24–11, dated 

December 16, 2010. The kit (P/N SB680–24– 

11) contains 2 sleeves, 4 splices, 2 diodes 

(P/N 1N4006), and instructions. 

(h) Before further flight after accomplishing 

the actions required by paragraph (g) of this 

AD: Revise the Cessna 680 Citation Sovereign 

Airplane Flight Manual (AFM) to include the 

information in Cessna Temporary FAA 

Approved Airplane Flight Manual Change 

68FM TC–R09–13, dated October 15, 2010, 

and remove the Temporary Changes (TCs) 


Emcdonald on DSK2BSOYB1PROD with PROPOSALS
Federal Register / Vol. 76, No. 169 / Wednesday, August 31, 2011 / Proposed Rules 54143 

identified in table 1 of this AD. Cessna 

Temporary FAA Approved Airplane Flight 

Manual Change 68FM TC–R09–13, dated 

October 15, 2010, introduces procedures to 

use when the left or right generator is 

selected OFF. Operate the airplane according 

to the procedures in Cessna Temporary FAA 

Approved Airplane Flight Manual Change 

68FM TC–R09–13, dated October 15, 2010. 

TABLE 1—TCS TO REMOVE FROM THE

CESSNA 680 AFM 

Cessna TCs— Dated— 

68FM TC–R09–09 ........ October 15, 2010. 

68FM TC–R09–10 ........ October 15, 2010. 

68FM TC–R09–11 ........ October 15, 2010. 

68FM TC–R09–12 ........ October 15, 2010. 

Note 1: Updating the Cessna 680 Citation 

Sovereign AFM may be done by inserting a 

copy of Cessna Temporary FAA Approved 

Airplane Flight Manual Change 68FM TC– 

R09–13, dated October 15, 2010, into the 

AFM. When this TC has been included in 

general revisions of the AFM, the general 

revisions may be inserted in the AFM, 

provided the relevant information in the 

general revision is identical to that in Cessna 

Temporary FAA Approved Airplane Flight 

Manual Change 68FM TC–R09–13, and this 

TC may be removed. 

Alternative Methods of Compliance 

(AMOCs) 

(i)(1) The Manager, Wichita Aircraft 

Certification Office (ACO), ACE–115W, FAA, 

has the authority to approve AMOCs for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. In accordance with 14 CFR 

39.19, send your request to your principal 

inspector or local Flight Standards District 

Office, as appropriate. If sending information 

directly to the manager of the ACO, send it 

to the attention of the person identified in the 

Related Information section of this AD. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

Related Information 

(j) For more information about this AD, 

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. 

(k) For service information identified in 

this 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. 

Issued in Renton, Washington, on August 

25, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–22225 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–2010–0904; Directorate 

Identifier 2010–NE–33–AD] 

RIN 2120–AA64 

Airworthiness Directives; Turbomeca 

Arriel 1B Turboshaft Engines 

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) 

issued 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: 

During quality inspections in repair centre 

some 2nd stage Nozzle Guide Vanes (NGVs) 

to be installed on Pre TU 148 standard Arriel 

1B were found not conforming to the 

definition. The affected parts had been 

repaired and were found drilled on the rear 

flange instead of the front flange. This 

configuration corresponds to 2nd stage 

Turbine NGVs to be installed on post-TU 148 

standard Arriel 1B engines. This non 

compliance may only be found on post-TU 

76 standard 2nd stage Turbine NGVs (i.e., 

with flexible hub). 

This non compliance would increase hot 

gas ingestion and generate an increase of 

temperature in the Gas Generator (GG) 

turbine rotor, potentially resulting in turbine 

damage and an uncommanded in-flight 

shutdown. 

We are proposing this AD to prevent 

over-temperature damage of the gas 

generator turbine, which could result in 

an uncommanded in-flight engine 

shutdown, and a subsequent forced 

autorotation landing or accident. 

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 and follow 

the instructions for sending your 

comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

New Jersey Avenue, SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. 

• Fax: 202–493–2251. 

Contact Turbomeca, 40220 Tarnos, 

France; phone: 33 05 59 74 40 00, fax: 

33 05 59 74 45 15, for the service 

information identified in this proposed 

AD. 

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 (phone: 800–647–5527) is the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: Rose 

Len, Aerospace Engineer, Engine 

Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7772; fax: 781–238– 

7199; e-mail: rose.len@faa.gov. 

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–2010–0904; Directorate Identifier 

2010–NE–33–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 with FAA 

personnel concerning this proposed AD. 

Using the search function of the Web 

site, anyone can find and read the 

comments in any of our dockets, 

including, if provided, the name of the 

individual who sent the comment (or 


Emcdonald on DSK2BSOYB1PROD with PROPOSALS