Federal Register / Vol. 76, No. 207 / Wednesday, October 26, 2011 / Proposed Rules 66205 

Subject 

(d) Air Transport Association (ATA) of 

America Code 24: Electrical Power. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

During pre-delivery inspections and test 

flights, several short circuit events were 

reported, one of which resulted in smoke in 

the cockpit. There were no in-service 

incidents. 

Investigations have identified three 

conditions affecting the wiring of Circuit 

Breaker Panels * * * and Junction Boxes 

* * *, which would lead to short circuiting: 

If not corrected, these conditions could result 

in arcing, damage to adjacent structure, 

smoke in the cockpit, or loss of system 

redundancies. 

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. 

Inspections, Bus Bar Actions, and Corrective 

Actions 

(g) For airplanes having serial numbers 

5701 through 5752, 5754 through 5775, 5777, 

5780 through 5781, 5783 through 5790, 5792, 

5794 through 5796, 5798, 5801, and 5804: 

Within 800 flight hours after the effective 

date of this AD, do the actions in paragraph 

(g)(1), (g)(2), and (g)(3) of this AD, in 

accordance with the Accomplishment 

Instructions of the Bombardier Service 

Bulletin 605–24–004, dated January 18, 2010. 

(1) Do a detailed inspection in CBP–1 for 

loose lugs and for crimped lugs that have any 

of the conditions specified in step 2.B.(9)(d) 

of Bombardier Service Bulletin 605–24–004, 

dated January 18, 2010. Before further flight, 

replace all loose lugs and all crimped lugs in 

CBP–1 that have any of the conditions 

specified in step 2.B.(9)(d) of Bombardier 

Service Bulletin 605–24–004, dated January 

18, 2010. 

(2) Relocate or replace the CBP–1 bus bars 

as applicable. 

(3) Do a general visual inspection for 

foreign object damage (FOD). If any FOD is 

found: Before further flight, remove the FOD. 

(h) For airplanes having serial numbers 

5701 through 5752, 5754 through 5756, 5758 

through 5775, 5779, 5781, 5788, 5789, 5792, 

5795, 5798, 5801, and 5804: Within 800 flight 

hours after the effective date of this AD, do 

the actions in paragraph (h)(1) and (h)(2) of 

this AD, in accordance with the 

Accomplishment Instructions of the 

Bombardier Service Bulletin 605–24–002, 

dated December 7, 2009. 

(1) Do a detailed inspection for loose lugs 

and for crimped lugs that have any of the 

conditions specified in step 2.B.(2)(d) of 

Bombardier Service Bulletin 605–24–002, 

dated December 7, 2009, in CBP–2, CBP–3, 

CBP–4, JB17, and JB18. Before further flight, 

replace all loose lugs and all crimped lugs 

that have any of the conditions specified in 

step 2.B.(2)(d) of Bombardier Service Bulletin 

605–24–002, dated December 7, 2009, in 

CBP–2, CBP–3, CBP–4, JB17, and JB18. 

(2) Do a general visual inspection for FOD. 

If any FOD is found: Before further flight, 

remove the FOD. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: The 

Accomplishment Instructions of Bombardier 

Service Bulletin 605–24–002, dated 

December 7, 2009, does not specify corrective 

action for the general visual inspection for 

FOD. This AD requires removing any FOD 

discovered during the general visual 

inspection. 

Other FAA AD Provisions 

(i) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office, ANE–170, 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 ATTN: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7300; fax (516) 

794–5531. 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 Canadian Airworthiness 

Directive CF–2010–25, dated August 3, 2010; 

and Bombardier Service Bulletin 605–24– 

002, dated December 07, 2009; and 

Bombardier Service Bulletin 605–24–004, 

dated January 18, 2010; for related 

information. 

Issued in Renton, Washington, on October 

17, 2011. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–27653 Filed 10–25–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0517; Directorate 

Identifier 2009–SW–73–AD] 

RIN 2120–AA64 

Airworthiness Directives; Sikorsky 

Aircraft Corporation Model S–76A 

Helicopters 

AGENCY: Federal Aviation 

Administration, DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This document proposes 

adopting a new airworthiness directive 

(AD) for the Sikorsky Aircraft 

Corporation (Sikorsky) Model S–76A 

helicopters. This proposal would 

require modifying the electric rotor 

brake (ERB). Thereafter, the AD would 

also require inserting changes to the 

‘‘Normal Procedures’’ and ‘‘Emergency 

Procedures’’ sections of the Rotorcraft 

Flight Manual (RFM), which revises the 

information of the basic RFM when the 

ERB is installed. This proposal is 

prompted by a reported incident of a 

fire occurring in an ERB installed on a 

Model S–76A helicopter. The actions 

specified by this proposed AD are 

intended to prevent overheating of the 

ERB assembly, ignition of the ERB 

hydraulic fluid, a fire in the main 

gearbox area, and subsequent loss of 

control of the helicopter. 

DATES: Comments must be received on 

or before December 27, 2011. 

ADDRESSES: Use one of the following 

addresses to submit comments on this 

proposed AD: 

• 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. 

You may get the service information 

identified in this proposed AD from 

Sikorsky Aircraft Corporation, Attn: 

Manager, Commercial Technical 

Support, mailstop s581a, 6900 Main 

Street, Stratford, CT, telephone (203) 

383–4866, e-mail address: 


jlentini on DSK4TPTVN1PROD with PROPOSALS
66206 Federal Register / Vol. 76, No. 207 / Wednesday, October 26, 2011 / Proposed Rules 

tsslibrary@sikorsky.com, or at http:// 

www.sikorsky.com. 

FOR FURTHER INFORMATION CONTACT: 

Caspar Wang, Aviation Safety Engineer, 

Boston Aircraft Certification Office, 12 

New England Executive Park, 

Burlington, MA 01803, telephone (781) 

238–7799, fax (781) 238–7170. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to submit any written 

data, views, or arguments regarding this 

proposed AD. Send your comments to 

the address listed under the caption 

ADDRESSES. Include the docket number 

‘‘FAA–2010–0517, Directorate Identifier 

2009–SW–73–AD’’ at the beginning 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 

rulemaking. Using the search function 

of our docket Web site, you can find and 

read the comments to any of our 

dockets, including the name of the 

individual who sent or signed the 

comment. 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 Docket 

You may examine the docket that 

contains the proposed AD, any 

comments, and other information 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 Docket Operations office 

(telephone (800) 647–5527) is located in 

Room W12–140 on the ground floor of 

the West Building at the street address 

stated in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

Discussion 

A number of service documents and 

ADs have been issued relating to the 

ERB on these and similar model 

helicopters. AD 82–17–03, issued July 

30, 1982 (47 FR 35469, August 16, 

1982), requires a puck-to-disc 

inspection of rotor brake, part number 

(P/N) 76363–09101–101, and 

modification of the ERB system 

including, among other modifications, 

installation of a warning relay by 

following Sikorsky Customer Service 

Bulletin No. 76–66–10B, dated 

November 25, 1981. AD 2003–04–15, 

issued February 14, 2003 (68 FR 8994, 

February 27, 2003), requires inspecting 

certain rotor brake discs for cracks that 

resulted from improper heat treating of 

the disc. This document proposes 

adopting a new AD for the Sikorsky 

Model S–76A helicopters with a 

different part-numbered ERB. This 

proposal would require, within 120 

days, modifying the ERB by installing 

and operationally testing the parts 

contained in an ERB warning relay kit 

(P/N 76070–55023–011), an ERB circuit 

modification kit (P/N 76070–55033– 

012), and an ERB modification kit (P/N 

76070–55207–011) for helicopters with 

ERB, P/N 76363–09100–012. This 

proposal is prompted by a reported 

incident of a fire occurring in an ERB 

installed on a Model S–76A helicopter 

in Brazil. The actions specified by this 

proposed AD are intended to prevent 

overheating of the ERB assembly, 

ignition of the ERB hydraulic fluid, a 

fire in the main gearbox area, and 

subsequent loss of control of the 

helicopter. 

We have reviewed the following 

documents from Sikorsky: 

• Customer Service Bulletin No. 76– 

66–10B, Revision 1, pages 2–8, dated 

July 30, 1981, and Revision 2, pages 1 

and 9–13 dated November 25, 1981 

(CSB), specifies installing an ERB 

warning relay kit; 

• Customer Service Notice 76–113, 

dated June 1, 1983 (CSN), which 

specifies installing an ERB circuit 

breaker and modification kit; and 

• ASB No. 76–66–48B, Revision B, 

dated July 8, 2009, which specifies a 

one-time installation of an ERB 

modification kit containing two other 

kits and several modifications. 

• RFM Supplement No. 41, dated 

September 6, 2005, which revises the 

information in the basic RFM normal 

and emergency procedures sections 

when the ERB system is modified. 

This unsafe condition is likely to exist 

or develop on other helicopters of the 

same type design. Therefore, the 

proposed AD would require modifying 

the ERB by installing the parts 

contained in a warning relay system 

modification kit, part number (P/N) 

76070–55023–011; a circuit 

modification kit, P/N 76070–55033–012; 

and a manifold, relay box, junction box, 

right-hand relay panel, and wiring 

harness modification kit, P/N 76070– 

55207–011. The proposed AD would 

also require operationally testing the 

ERB system after each modification. The 

proposed AD would also require 

inserting changes contained in a 

supplement into the RFM. 

These actions would be required to be 

accomplished in accordance with 

specified portions of the service 

information described previously. 

We estimate that this proposed AD 

would affect 180 helicopters of U.S. 

registry. It would take about 38 work 

hours per helicopter to perform the 

modifications and operational tests at an 

average labor rate of $85 per work hour. 

Required parts would cost $13,300 per 

helicopter. Based on these figures, we 

estimate the total cost impact of the 

proposed AD on U.S. operators would 

be $2,975,400 for the fleet. 

Regulatory Findings 

We have determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. Additionally, 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); 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 draft economic 

evaluation of the estimated costs to 

comply with this proposed AD. See the 

AD docket to examine the draft 

economic evaluation. 

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 


jlentini on DSK4TPTVN1PROD with PROPOSALS
Federal Register / Vol. 76, No. 207 / Wednesday, October 26, 2011 / Proposed Rules 66207 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, pursuant to the 

authority delegated to me by the 

Administrator, the Federal Aviation 

Administration proposes to amend part 

39 of the Federal Aviation Regulations 

(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. Section 39.13 is amended by 

adding a new airworthiness directive 

(AD) to read as follows: 

Sikorsky Aircraft Corporation: Docket No. 

FAA–2010–0517; Directorate Identifier 

2009–SW–73–AD. 

Applicability: Model S–76A helicopters, 

with an electric rotor brake (ERB), part 

number (P/N) 76363–09100–012, installed, 

certificated in any category. 

Compliance: Required as indicated, unless 

accomplished previously. 

To prevent overheating of the ERB 

assembly, ignition of the ERB hydraulic fluid, 

fire in the main gearbox area, and subsequent 

loss of control of the helicopter, do the 

following: 

(a) Within 120 days, modify the ERB by 

installing: 

(1) Warning relay system parts contained 

in modification kit, part number (P/N) 

76070–55023–011, and operationally testing 

the ERB system in accordance with 

paragraphs 2.A. through 2.F., of Sikorsky 

Customer Service Bulletin No. 76–66–10B, 

Revision 1 (pages 2 through 8), dated July 30, 

1981, and Revision 2, (pages 1 and 9 through 

13) dated November 25, 1981; 

(2) Circuit breaker and diodes contained in 

ERB circuit modification kit, P/N 76070– 

55033–012, and operationally testing the ERB 

system in accordance with paragraph B. 

through F. of Sikorsky Customer Service 

Notice 76–113, dated June 1, 1983; and 

(3) Manifold, relay box, junction box, righthand relay panel, and wiring harness parts 

contained in ERB modification kit, P/N 

76070–55207–011, and operationally testing 

the ERB system in accordance with 

paragraphs 3.B. through 3.I. of the 

Accomplishment Instructions of Sikorsky 

Alert Service Bulletin No. 76–66–48B, 

Revision B, dated July 8, 2009. 

(b) After accomplishing paragraph (a) of 

this AD, insert into the Sikorsky Rotorcraft 

Flight Manual (RFM) the changes to the 

‘‘Normal Procedures (Part I, Section II)’’ and 

‘‘Emergency Procedures (Part 1, Section III)’’ 

contained in Sikorsky RFM, Supplement No. 

41, dated September 6, 2005. 

(c) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Contact the Manager, Boston Aircraft 

Certification Office, FAA, ATTN: Caspar 

Wang, Aviation Safety Engineer, 12 New 

England Executive Park, Burlington, MA 

01803, telephone (781) 238–7799, fax (781) 

238–7170, for information about previously 

approved alternative methods of compliance. 

(d) The Joint Aircraft System/Component 

(JASC) Code is 6321: Main Rotor Brake. 

Issued in Fort Worth, Texas, on October 7, 

2011. 

Lance T. Gant, 

Acting Manager, Rotorcraft Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–27659 Filed 10–25–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1115; Directorate 

Identifier 2010–SW–011–AD] 

RIN 2120–AA64 

Airworthiness Directives; Sikorsky 

Aircraft Corporation (Sikorsky) Model 

S–92A Helicopters 

AGENCY: Federal Aviation 

Administration, DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This document proposes 

adopting a new airworthiness directive 

(AD) for the Sikorsky Model S–92A 

helicopters. This proposal would 

require revising the Operating 

Limitations section of the Sikorsky 

Model S–92A Rotorcraft Flight Manual 

(RFM). This proposal is prompted by 

the manufacturer’s analysis of engine 

data that revealed the data was 

inaccurate in dealing with available 

above specification engine power 

margin. The actions specified by this 

proposed AD are intended to prevent 

the use of inaccurate engine 

performance data in calculating 

maximum gross weight by revising the 

Operating Limitations section of the 

RFM. 

DATES: Comments must be received on 

or before December 27, 2011. 

ADDRESSES: Use one of the following 

addresses to submit comments on this 

proposed AD: 

• 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 FURTHER INFORMATION CONTACT: John 

Coffey, Aviation Safety Engineer, Boston 

Aircraft Certification Office, 12 New 

England Executive Park, Burlington, MA 

01803, telephone (781) 238–7173, fax 

(781) 238–7170. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to submit any written 

data, views, or arguments regarding this 

proposed AD. Send your comments to 

the address listed under the caption 

ADDRESSES. Include the docket number 

‘‘FAA–2011–1115, Directorate Identifier 

2010–SW–011–AD’’ at the beginning 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 

rulemaking. Using the search function 

of our docket web site, you can find and 

read the comments to any of our 

dockets, including the name of the 

individual who sent or signed the 

comment. 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 Docket 

You may examine the docket that 

contains the proposed AD, any 

comments, and other information 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 Docket Operations office 

(telephone (800) 647–5527) is located in 

Room W12–140 on the ground floor of 

the West Building at the street address 

stated in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 


jlentini on DSK4TPTVN1PROD with PROPOSALS