70382 Federal Register / Vol. 76, No. 219 / Monday, November 14, 2011 / Proposed Rules 

inch. The requirements of this AD take 

precedence over the actions required in the 

service information. 

(1) The fuel return line assembly (Cessna 

P/N 0500118–49) and the steering tube 

assembly (Cessna P/N MC0543022–2C); and 

(2) The fuel return line assembly (Cessna 

P/N 0500118–49) and the airplane structure. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Wichita 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. 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. 

(k) Related Information 

(1) For more information about this AD, 

Trenton Shepherd, Aerospace Engineer, 

Wichita ACO, FAA, 1801 Airport Road, 

Room 100, Wichita, Kansas 67209; phone: 

(316) 946–4143; fax: (316) 946–4107; email: 

trent.shepherd@faa.gov. 

(2) For service information identified in 

this AD, contact Cessna Aircraft Company, 

Product Support, P.O. Box 7706, Wichita, KS 

67277; telephone: (316) 517–6000; fax: (316) 

517–8500; email: 

Customercare@cessna.textron.com; Internet: 

http://www.cessna.com. You may review 

copies of the referenced service information 

at the FAA, Small Airplane Directorate, 901 

Locust, Kansas City, Missouri 64106. 

For information on the availability of this 

material at the FAA, call (816) 329–4148. 

Issued in Kansas City, Missouri, on 

November 7, 2011. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2011–29315 Filed 11–10–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2006–25738; Directorate 

Identifier 2006–NE–27–AD] 

RIN 2120–AA64 

Airworthiness Directives; General 

Electric Company (GE) CF6–80C2B 

Series Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede an 

existing airworthiness directive (AD) 

that applies to all GE CF6–80C2B series 

turbofan engines. The existing AD 

currently requires installing software 

version 8.2.Q1 to the engine electronic 

control unit (ECU), which increases the 

engine’s margin to flameout. Since we 

issued that AD, we have received 

reports of additional engine events. This 

proposed AD would require the removal 

of the affected ECUs from service. We 

are proposing this AD to prevent engine 

flameout or un-commanded engine inflight shutdown (IFSD) of one or more 

engines, leading to an emergency or 

forced landing of the airplane. 

DATES: We must receive comments on 

this proposed AD by January 13, 2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, 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. 

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: 

Tomasz Rakowski, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: (781) 238–7735; fax: (781) 238– 

7199; email: tomasz.rakowski@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–2006–25738; Directorate Identifier 

2006–NE–27–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 

On May 30, 2007, we issued AD 

2007–12–07, Amendment 39–15085 (72 

FR 31174, June 6, 2007), for all GE CF6– 

80C2B series turbofan engines. That AD 

requires installing software version 

8.2.Q1 to the ECU, which increases the 

engine’s margin to flameout. That AD 

was prompted by multiple reports of 

flameout events during flight on engines 

with an ECU software version preceding 

version 8.2.Q1, including reports of 

events where all engines simultaneously 

experienced a flameout. Investigation 

showed that exposure to ice crystals 

during flight was associated with these 

flameout events. That AD action was 

intended to minimize the potential of an 

engine flameout event caused by ice 

accretion and shedding during flight. 

Actions Since Existing AD Was Issued 

Since we issued AD 2007–12–07 (72 

FR 31174, June 6, 2007), we received 

two reports of ice crystal condition 

flameouts on engines equipped with 

ECU software version 8.2.Q1. Prompted 

by these reports, GE developed ECU 

software version 8.2.R with improved 

inclement weather capability, and 

enhanced fuel metering valve (FMV) 

fault handling logic to reduce the risk of 

engine IFSD caused by intermittent 

FMV feedback signals. 

Subsequently, we received reports of 

eight engine IFSD events and four 

engine flameout ground events. These 

events were caused by ignition system 

induced noise creating dual-channel 

faults in the CPU. The event engines 

were operating with 8.2.Q1 and 8.2.R 

versions of ECU software and equipped 

with the new generation of front panel 

assembly (FPA) and pressure subsystem 

(PSS) circuit boards. Prompted by these 

reports, GE developed an ECU hardware 

fix to eliminate the potential for dualchannel CPU faults due to ignition 

system-induced noise. This proposed 

AD supersedure removes the affected 

ECUs from the fleet. These ECUs, if not 

corrected, could result in flameout or 


jlentini on DSK4TPTVN1PROD with PROPOSALS
Federal Register / Vol. 76, No. 219 / Monday, November 14, 2011 / Proposed Rules 70383 

un-commanded IFSD of one or more 

engines, leading to an emergency or 

forced landing of the airplane. 

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 the same 

type design. 

Proposed AD Requirements 

This proposed AD would require the 

removal from service of certain affected 

ECU part numbers (P/Ns) with software 

version 8.2.Q1 and prior, which are 

susceptible to engine flameouts due to 

inclement weather, and those with the 

new generation FPA/PSS circuit boards, 

which are susceptible to IFSD. The 

proposed compliance times for removal 

are based on the ECU’s degree of 

susceptibility to engine flameout or 

IFSD. This proposed AD would also 

prevent airplanes from having more 

than one ECU with P/N 2121M37P02, 

2121M38P02, or 2121M41P02, installed. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 697 GE CF6–80C2B series 

turbofan engines installed on airplanes 

of U.S. registry. We also estimate that it 

would take about 4 work-hours per 

engine to perform a removal and 

replacement of the ECU, and that the 

average labor rate is $85 per work-hour. 

A replacement ECU costs about $4,600. 

Based on these figures, we estimate the 

total cost of the AD to U.S. operators to 

be $3,443,180. 

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 have 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 that the 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 

removing airworthiness directive (AD) 

2007–12–07, Amendment 39–15085 (72 

FR 31174, June 6, 2007), and adding the 

following new AD: 

General Electric Company: Docket No. FAA– 

2006–25738; Directorate Identifier 2006– 

NE–27–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by January 13, 2012. 

(b) Affected ADs 

This AD supersedes AD 2007–12–07, 

Amendment 39–15085 (72 FR 31174, June 6, 

2007). 

(c) Applicability 

This AD applies to General Electric 

Company (GE) CF6–80C2B1F, CF6– 

80C2B1F1, CF6–80C2B1F2, CF6–80C2B2F, 

CF6–80C2B3F, CF6–80C2B4F, CF6– 

80C2B5F, CF6–80C2B6F, CF6–80C2B6FA, 

CF6–80C2B7F, and CF6–80C2B8F turbofan 

engines, including engines marked on the 

engine data plate as CF6–80C2B7F1. 

(d) Unsafe Condition 

This AD results from: 

(1) Two reports of engine flameout events 

during flight in inclement weather 

conditions; and 

(2) Eight reports of engine in-flight 

shutdown (IFSD) events caused by dualchannel central processing unit (CPU) faults 

in the electronic control unit (ECU); and 

(3) Four reports of engine flameout ground 

events. 

(e) We are issuing this AD to prevent 

engine flameout or un-commanded engine 

IFSD of one or more engines, leading to an 

emergency or forced landing of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified unless already 

done. 

(g) ECU Removal 

(1) Remove from service ECUs with part 

numbers (P/Ns) listed in Table 1 of this AD, 

within 6 months or 450 engine flight cycles 

after the effective date of this AD, whichever 

occurs first. 

TABLE 1—AFFECTED ECU P/NS

1471M63P01 1471M63P02 1471M63P03 1471M63P04 1471M63P05 

1471M63P06 1471M63P07 1471M63P08 1471M63P09 1471M63P10 

1471M63P11 1471M63P12 1471M63P13 1471M63P14 1471M63P15 

1471M63P16 1471M63P17 1471M63P18 1471M63P23 1471M63P24 

1471M63P25 1471M63P26 1471M63P27 1471M63P28 1471M63P29 

1471M63P30 1471M63P31 1471M63P32 1471M63P33 1471M63P34 

1471M63P35 1471M63P36 1519M89P01 1519M89P02 1519M89P03 

1519M89P04 1519M89P05 1519M89P06 1519M89P07 1519M89P08 

1519M89P09 1519M89P10 1519M89P13 1519M89P14 1519M89P15 

1519M89P16 1519M89P17 1519M89P18 1519M89P19 1519M89P20 

1519M89P21 1519M89P22 1519M89P23 1519M89P24 1519M89P25 

1519M89P26 1820M33P01 1820M33P02 1820M33P03 1820M33P04 


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70384 Federal Register / Vol. 76, No. 219 / Monday, November 14, 2011 / Proposed Rules 

TABLE 1—AFFECTED ECU P/NS—Continued 

1820M33P05 1820M33P06 1820M33P07 1820M33P08 1820M33P09 

(2) Remove from service ECUs with P/N 

2121M37P01, 2121M37P02, 2121M38P01, 

2121M38P02, 2121M41P01 and 

2121M41P02, within 14 months or 1,050 

engine flight cycles after the effective date of 

this AD, whichever occurs first. 

(3) Remove from service ECUs with P/Ns 

listed in Table 2 of this AD, within 60 

months or 4,500 engine flight cycles after the 

effective date of this AD, whichever occurs 

first. 

TABLE 2—AFFECTED ECU P/NS

1471M63P37 1471M63P38 1471M63P39 1471M63P40 1471M63P42 

1519M89P27 1519M89P28 1519M89P29 1519M89P30 1519M89P32 

1820M33P10 1820M33P11 1820M33P12 1820M33P13 1820M33P15 

2121M25P01 2121M25P02 2121M26P01 2121M26P02 2121M29P01 

2121M29P02 2121M37P03 2121M38P03 2121M41P03 

(h) Installation Prohibition 

(1) After the effective date of this AD, do 

not install any ECU P/N listed in Table 1 of 

this AD onto any airplane. 

(2) After the effective date of this AD, do 

not operate any airplane with more than one 

ECU, P/N 2121M37P02, 2121M38P02, or 

2121M41P02, installed. 

(i) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs for this AD. Use 

the procedures in 14 CFR 39.19 to make your 

request. 

(j) Related Information 

For more information about this AD, 

contact Tomasz Rakowski, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; phone: (781) 238–7735; fax: (781) 

238–7199; email: tomasz.rakowski@faa.gov. 

Issued in Burlington, Massachusetts, on 

November 3, 2011. 

Peter A. White, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–29228 Filed 11–10–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 117 

[Docket No. USCG–2011–0937] 

RIN 1625–AA09 

Drawbridge Operation Regulation; 

Black River, La Crosse, WI 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking 

and public meeting. 

SUMMARY: The Coast Guard proposes a 

change to drawbridge operations for the 

Canadian Pacific Railroad Drawbridge 

across the Black River at Mile 1.0 near 

La Crosse, Wisconsin. Drawspan is 

currently operated by an onsite bridge 

tender, opening on signal following twohour notification. The proposed change 

is for drawspan operation by remote 

operator, opening immediately upon 

demand. 

DATES: Comments and related material 

must reach the Coast Guard on or before 

January 13, 2012. A public meeting will 

be held on November 29, 2011. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

2011–0937 using any one of the 

following methods: 

(1) Federal eRulemaking Portal: 

http://www.regulations.gov. 

(2) Fax: (202) 493–2251. 

(3) Mail: Docket Management Facility 

(M–30), U.S. Department of 

Transportation, West Building Ground 

Floor, Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590– 

0001. 

(4) Hand delivery: Same as mail 

address above, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The telephone number 

is (202) 366–9329. Comments can also 

be delivered in person at the public 

meeting on November 29, 2011, 6 p.m. 

at the Black River Beach Neighborhood 

Center, 1433 Rose Street, La Crosse, WI 

54603. 

To avoid duplication, please use only 

one of these four methods. See the 

‘‘Public Participation and Request for 

Comments’’ portion of the 

SUPPLEMENTARY INFORMATION section 

below for instructions on submitting 

comments. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions on this proposed 

rule, call or email Mr. Eric Washburn, 

Bridge Administrator, Western Rivers, 

(314) 269–2378, email 

Eric.Washburn@uscg.mil. If you have 

questions on viewing or submitting 

material to the docket, call Renee V. 

Wright, Program Manager, Docket 

Operations, telephone (202) 366–9826. 

SUPPLEMENTARY INFORMATION: 

Public Participation and Request for 

Comments 

We encourage you to participate in 

this rulemaking by submitting 

comments and related materials. All 

comments received will be posted, 

without change to http:// 

www.regulations.gov and will include 

any personal information you have 

provided. 

Submitting Comments 

If you submit a comment, please 

include the docket number for this 

rulemaking (USCG–2011–0937), 

indicate the specific section of this 

document to which each comment 

applies, and provide a reason for each 

suggestion or recommendation. You 

may submit your comments and 

material online (http:// 

www.regulations.gov), or by fax, mail or 

hand delivery, but please use only one 

of these means. If you submit a 

comment online via http:// 

www.regulations.gov, it will be 

considered received by the Coast Guard 

when you successfully transmit the 

comment. If you fax, hand deliver, or 

mail your comment, it will be 

considered as having been received by 

the Coast Guard when it is received at 

the Docket Management Facility. We 

recommend that you include your name 

and a mailing address, an email address, 

or a phone number in the body of your 

document so that we can contact you if 

we have questions regarding your 

submission. 

To submit your comment online, go to 

http://www.regulations.gov, click on the 

‘‘submit a comment’’ box, which will 

then become highlighted in blue. In the 

‘‘Document Type’’ drop down menu 

select ‘‘Proposed Rules’’ and insert 


jlentini on DSK4TPTVN1PROD with PROPOSALS