77570 Federal Register / Vol. 75, No. 238 / Monday, December 13, 2010 / Proposed Rules 

the flight control surfaces for both 

normal and failure states, and it 

generates the actual surface commands 

that provide for stability augmentation 

and control about all three airplane 

axes. Because electronic flight control 

system technology has outpaced 

existing regulations (primarily §§ 25.671 

and 25.672), a special condition is 

proposed to ensure appropriate mode 

recognition by the flight crew for events 

which significantly change the 

operating mode of the electronic flight 

control system. 

Discussion of Proposed Special 

Conditions 

Some failures of this system may lead 

to a degraded operating mode that does 

not merit a classic ‘‘failure warning’’ but 

in which flight envelope protection is 

lost and the flight crew must fly the 

airplane differently to avoid a stall or to 

avoid exceeding structural speed 

limitations. In that case, mode 

awareness by the flight crew is 

necessary to avoid confusion and 

protect safe flight. Therefore, these 

special conditions for flight control 

system mode annunciation propose 

suitable mode annunciation be provided 

to the flight crew for such events. 

Applicability 

As discussed above, these proposed 

special conditions are applicable to the 

GVI. Should Gulfstream apply at a later 

date for a change to the type certificate 

to include another model incorporating 

the same novel or unusual design 

features, these proposed special 

conditions would apply to that model as 

well. 

Conclusion 

This action affects only certain novel 

or unusual design features of the GVI. It 

is not a rule of general applicability. 

List of Subjects in 14 CFR Part 25 

Aircraft, Aviation safety, Reporting 

and recordkeeping requirements. 

The authority citation for these 

special conditions is as follows: 

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

44702, 44704. 

The Proposed Special Conditions 

Accordingly, the Federal Aviation 

Administration (FAA) proposes the 

following special conditions as part of 

the type certification basis for the GVI 

airplanes. 

If the design of the flight control system 

has multiple modes of operation, a means 

must be provided to indicate to the flight 

crew any mode that significantly changes or 

degrades the normal handling or operational 

characteristics of the airplane. 

Issued in Renton, Washington. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–31177 Filed 12–10–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1151; Directorate 

Identifier 95–ANE–10–AD] 

RIN 2120–AA64 

Airworthiness Directives; General 

Electric Company CF6 Series Turbofan 

Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) for General Electric (GE) 

CF6–45/–50 series and CF6–80A series 

turbofan engines with certain part 

number (P/N) side links of the five-link 

forward mount assembly installed. That 

AD currently requires an initial and 

repetitive visual inspection of the side 

links for cracks, and stripping and 

reapplying the Sermetel W coating on 

the side link at every exposure of the 

side link. That AD also requires 

replacing the side links and pylon 

attachment bolts, and inspecting the 

fail-safe bolt and platform lug if the side 

links are cracked. This proposed AD 

would continue to require those same 

inspections and stripping and 

reapplying the Sermetel W coating, and 

would add two part numbers to the 

applicability. This proposed AD results 

from a review of the inspection 

program, which revealed that GE had 

omitted two affected part numbers from 

the applicability. We are proposing this 

AD to prevent failure of the side links 

and possible engine separation from the 

airplane. 

DATES: We must receive any comments 

on this proposed AD by February 11, 

2011. 

ADDRESSES: Use one of the following 

addresses to comment on this proposed 

AD. 

• 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. 

FOR FURTHER INFORMATION CONTACT: 

Tomasz Rakowski, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; telephone (781) 238–7735; fax 

(781) 238–7199. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments 

regarding this proposal. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘Docket No. FAA– 

2010–1151; Directorate Identifier 95– 

ANE–10–AD’’ in the subject line of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the proposed AD. We will 

consider all comments received by the 

closing date and may amend the 

proposed AD in light 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 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 

signed the comment on behalf of an 

association, business, labor union, etc.). 

You may review the DOT’s complete 

Privacy Act Statement in the Federal 

Register published on April 11, 2000 

(65 FR 19477–78). 

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 the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 


wwoods2 on DSK1DXX6B1PROD with PROPOSALS_PART 1
Federal Register / Vol. 75, No. 238 / Monday, December 13, 2010 / Proposed Rules 77571 

Discussion 

The FAA proposes to amend 14 CFR 

part 39 by superseding AD 2006–12–24, 

Amendment 39–14650 (71 FR 34807, 

June 16, 2006). That AD requires 

inspecting and stripping and reapplying 

the Sermetel W coating on the side links 

every time one or more of the bolts 

attaching the side link to the fan 

frame—front high-pressure compressor 

case or the bolt attaching the side link 

to the mount platform are removed. 

That AD resulted from a report of a 

cracked side link found during a routine 

inspection at a shop visit in 2006. That 

condition, if not corrected, could result 

in failure of the side links and possible 

engine separation from the airplane. 

Actions Since AD 2006–12–24 Was 

Issued 

Since that AD was issued, GE 

performed an evaluation of the 

inspection program and determined that 

they had omitted the P/Ns for two side 

links that could be installed on CF6–45/ 

–50 series and CF6–80A series engines. 

GE introduced those P/N side links in 

2000. The age of those side links means 

that they might have experienced only 

two shop visits (the average time 

between shop visits is about four years) 

since they were put into service. Also, 

about 50 percent of the new side links 

are spare parts and they might not be 

installed on any engines in service yet. 

Because of those conditions, we haven’t 

received any reports of cracks in the 

new P/N links. However, due to the 

similarity in design between these 

additional parts and the parts that are 

listed in AD 2006–12–24, the same 

unsafe condition could exist or develop 

on the additional side links. Because 

there is no requirement to inspect or 

strip and reapply the Sermetel W 

coating on these additional part 

numbers in AD 2006–12–24, they might 

not have been inspected for cracks, 

which could lead to part failure. This 

proposed AD would add left-hand side 

link, P/N 9346M99P03, and right-hand 

side link, P/N 9346M99P04, to the 

applicability. We have also updated the 

applicability section to list the affected 

engine models in the same way they are 

listed on their Type Certificate Data 

Sheets. 

Relevant Service Information 

We have reviewed and approved the 

technical contents of GE Service 

Bulletins CF6–50 S/B 72–1255, Revision 

1, dated June 17, 2009, and CF6–80A 

S/B 72–0797, Revision 1, dated June 17, 

2009, that describe procedures for 

inspecting and stripping and reapplying 

the Sermetel W coating on the side 

links. 

FAA’s Determination and Requirements 

of the Proposed AD 

We have evaluated all pertinent 

information and identified an unsafe 

condition that is likely to exist or 

develop on other products of this same 

type design. For that reason, we are 

proposing this AD, which would require 

inspecting and stripping and reapplying 

the Sermetel W coating on the side links 

at each exposure of the side link. The 

proposed AD would require that you do 

these actions using the service 

information described previously. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 194 engines installed on 

airplanes of U.S. registry. We also 

estimate that it would take about 8 

work-hours per engine to perform the 

proposed actions, and that the average 

labor rate is $85 per work-hour. We 

estimate the parts cost to be negligible 

because only a small percentage of parts 

will actually require replacement as a 

result of this proposed AD. Based on 

these figures, we estimate the total cost 

of the proposed AD to U.S. operators to 

be $131,920 per year. 

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 AD: 

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. Would 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. See the ADDRESSES

section for a location to examine the 

regulatory evaluation. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Under the authority delegated to me 

by the Administrator, the Federal 

Aviation Administration 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 Amendment 39–14650 (71 FR 

34807, June 16, 2006), and by adding a 

new airworthiness directive to read as 

follows: 

General Electric Company: Docket No. FAA– 

2010–1151; Directorate Identifier 95– 

ANE–10–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

(FAA) must receive comments on this 

airworthiness directive (AD) action by 

February 11, 2011. 

Affected ADs 

(b) This AD supersedes AD 2006–12–24, 

Amendment 39–14650. 

Applicability 

(c) This AD applies to General Electric (GE) 

CF6–45A, CF6–45A2, CF6–50A, CF6–50C, 

CF6–50CA, CF6–50C1, CF6–50C2, CF6– 

50C2B, CF6–50C2D, CF6–50E, CF6–50E1, 

CF6–50E2, CF6–50E2B, CF6–80A, CF6– 

80A1, CF6–80A2, and CF6–80A3 turbofan 

engines with left-hand side links part 

numbers (P/Ns) 9204M94P01, 9204M94P03, 

9346M99P01, and 9346M99P03, and righthand side links, P/Ns 9204M94P02, 

9204M94P04, 9346M99P02, and 

9346M99P04, installed on the five-link 

forward engine mount assembly (also known 


wwoods2 on DSK1DXX6B1PROD with PROPOSALS_PART 1
77572 Federal Register / Vol. 75, No. 238 / Monday, December 13, 2010 / Proposed Rules 

as Configuration 2). These engines are 

installed on, but not limited to, Boeing DC– 

10–30, DC–10–30F (KC–10A, KDC–10), 767, 

and 747 series airplanes and Airbus A300 

and A310 series airplanes. 

Unsafe Condition 

(d) This AD results from a review of the 

inspection program, which revealed that GE 

had omitted two affected part numbers from 

the applicability. We are issuing this AD to 

prevent failure of the side links and possible 

engine separation from the airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed at 

every exposure of the side link. 

Inspecting and Stripping and Reapplying the 

Sermetel W Coating on the Side Links 

(f) Inspect and strip and reapply the 

Sermetel W coating on each side link at every 

exposure of the side links. Use the following 

GE service bulletins (SBs): 

(1) For CF6–45/–50 series engines, use 

paragraphs 3.A. through 3.E. of the 

Accomplishment Instructions of CF6–50 S/B 

72–1255, Revision 1, dated June 17, 2009. 

(2) For CF6–80A series engines, use 

paragraphs 3.A. through 3.E. of the 

Accomplishment Instructions of CF6–80A 

S/B 72–0797, Revision 1, dated June 17, 

2009. 

Definition of Exposure of Side Link 

(g) A side link is exposed when one or 

more bolts that attach the side links to the fan 

frame-front high-pressure compressor case 

are removed, or when the bolt attaching the 

side link to the mount platform is removed. 

Alternative Methods of Compliance 

(h) The Manager, Engine Certification 

Office, has the authority to approve 

alternative methods of compliance for this 

AD if requested using the procedures found 

in 14 CFR 39.19. 

Related Information 

(i) Contact Tomasz Rakowski, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; telephone (781) 238–7735; fax (781) 

238–7199, for more information about this 

AD. 

(j) General Electric SBs CF6–50 S/B 72– 

1255, Revision 1, dated June 17, 2009, and 

CF6–80A S/B 72–0797, Revision 1, dated 

June 17, 2009, pertain to the subject of this 

AD. Contact General Electric Aviation 

Operations Center (AOC), telephone (877) 

432–3272; fax (877) 432–3329; or go to: 

https://customer.geae.com, for a copy of this 

service information. 

Issued in Burlington, Massachusetts, on 

November 17, 2010. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–31172 Filed 12–10–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2010–1105 Airspace 

Docket No. 10–AAL–20] 

Proposed Revision of Class E 

Airspace; Platinum AK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to revise 

Class E airspace at Platinum AK. The 

creation of a new Standard Instrument 

Approach Procedure (SIAP) at the 

Platinum Airport has made this action 

necessary to enhance safety and 

management of Instrument Flight Rules 

(IFR) operations. 

DATES: Comments must be received on 

or before January 27, 2011. 

ADDRESSES: Send comments on the 

proposal to the Docket Management 

Facility, U.S. Department of 

Transportation, 1200 New Jersey 

Avenue, SE., West Building Ground 

Floor, Room W12–140, Washington, DC 

20590–0001. You must identify the 

docket number FAA–2010–1105/ 

Airspace Docket No. 10–AAL–20 at the 

beginning of your comments. You may 

also submit comments on the Internet at 

http://www.regulations.gov. You may 

review the public docket containing the 

proposal, any comments received, and 

any final disposition in person in the 

Dockets Office between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The Docket Office 

(telephone 1–800–647–5527) is on the 

plaza level of the Department of 

Transportation NASSIF Building at the 

above address. 

An informal docket may also be 

examined during normal business hours 

at the office of the Manager, Safety, 

Alaska Flight Service Operations, 

Federal Aviation Administration, 222 

West 7th Avenue, Box 14, Anchorage, 

AK 99513–7587. 

FOR FURTHER INFORMATION CONTACT: 

Martha Dunn, Federal Aviation 

Administration, 222 West 7th Avenue, 

Box 14, Anchorage, AK 99513–7587; 

telephone number (907) 271–5898; fax: 

(907) 271–2850; e-mail: 

Martha.ctr.Dunn@faa.gov. Internet 

address: http://www.faa.gov/about/ 

office_org/headquarters_offices/ato/ 

service_units/systemops/fs/alaskan/ 

rulemaking/. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers and be submitted in 

triplicate to the address listed above. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this notice must submit with those 

comments a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to 

Docket No. FAA–2010–1105/Airspace 

Docket No. 10–AAL–20.’’ The postcard 

will be date/time stamped and returned 

to the commenter. 

All communications received on or 

before the specified closing date for 

comments will be considered before 

taking action on the proposed rule. The 

proposal contained in this notice may 

be changed in light of comments 

received. All comments submitted will 

be available for examination in the 

public docket both before and after the 

closing date for comments. A report 

summarizing each substantive public 

contact with FAA personnel concerned 

with this rulemaking will be filed in the 

docket. 

Availability of NPRMs 

An electronic copy of this document 

may be downloaded through the 

Internet at http://www.regulations.gov. 

Recently published rulemaking 

documents can also be accessed through 

the FAA’s Web page at http:// 

www.faa.gov/airports_airtraffic/ 

air_traffic/publications/ 

airspace_amendments/. 

Additionally, any person may obtain 

a copy of this notice by submitting a 

request to the Federal Aviation 

Administration, Office of Air Traffic 

Airspace Management, ATA–400, 800 

Independence Avenue, SW., 

Washington, DC 20591 or by calling 

(202) 267–8783. Communications must 

identify both docket numbers for this 

notice. Persons interested in being 

placed on a mailing list for future 

NPRM’s should contact the FAA’s 

Office of Rulemaking, (202) 267–9677, 

to request a copy of Advisory Circular 

No. 11–2A, Notice of Proposed 


wwoods2 on DSK1DXX6B1PROD with PROPOSALS_PART 1