Document ID: FAA-2010-0242-0001
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Sikorsky Aircraft Corp. Model S-76C Helicopters
Posted Date: 2010-03-17T04:00Z

[Federal Register: March 17, 2010 (Volume 75, Number 51)]
[Rules and Regulations]               
[Page 12665-12667]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr17mr10-5]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0242; Directorate Identifier 2009-SW-27-AD; 
Amendment 39-16232; AD 2010-06-08]
RIN 2120-AA64

 
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-
76C Helicopters

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule; request for comments.

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SUMMARY: This amendment adopts a new airworthiness directive (AD) for 
the specified Sikorsky Aircraft Corporation (Sikorsky) Model S-76C 
helicopters. This action requires inspecting the emergency flotation 
system squib connector (flotation system connector) to determine if a 
metallic foil shunt is installed. This amendment is prompted by a 
discovery that a metallic foil shunt meant to prevent inadvertent 
activation of a flotation system during installation was still 
installed in the left-hand flotation system connector of a Model S-76C 
helicopter. The actions specified in this AD are intended to determine 
if a metallic foil shunt is installed in the flotation system, which 
could prevent the flotation system from deploying and could prevent the 
helicopter from staying afloat long enough to enable

[[Page 12666]]

emergency evacuation after a water landing.

DATES: Effective April 1, 2010.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of April 1, 2010.
    Comments for inclusion in the Rules Docket must be received on or 
before May 17, 2010.

ADDRESSES: Use one of the following addresses to submit comments on 
this AD:
     Federal eRulemaking Portal: Go to http://
www.regulations.gov. Follow the instructions for submitting comments.
     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 AD from 
Sikorsky Aircraft Corporation, Attn: Manager, Commercial Technical 
Support, mailstop s581a, 6900 Main Street, Stratford, CT, telephone 
(203) 383-4866, e-mail address tsslibrary@sikorsky.com, or at http://
www.sikorsky.com.

EXAMINING THE DOCKET: You may examine the docket that contains the 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.

FOR FURTHER INFORMATION CONTACT: Terry Fahr, Aviation Safety Engineer, 
Boston Aircraft Certification Office, 12 New England Executive Park, 
Burlington, MA 01803, telephone (781) 238-7155, fax (781) 238-7170.

SUPPLEMENTARY INFORMATION: This amendment adopts a new AD for the 
specified Sikorsky Model S-76C helicopters. This action requires a one-
time inspection of the flotation system connector to determine if a 
metallic foil shunt is installed, and if one is found, removing it. 
This amendment is prompted by a discovery during an inspection that a 
metallic foil shunt was still installed in the left-hand flotation 
system squib connector of a Model S-76C helicopter. The metallic foil 
shunt is intended to prevent inadvertent activation of the flotation 
system during installation. The actions specified in this AD are 
intended to determine if a metallic foil shunt is installed in the 
flotation system, which could prevent the flotation system from 
deploying and could prevent the helicopter from staying afloat long 
enough to enable emergency evacuation after a water landing.
    We have reviewed Sikorsky Alert Service Bulletin No. 76-32-30, 
dated April 8, 2009, which describes procedures for a one-time 
inspection of a flotation system connector, installed by Keystone 
Helicopter Corporation on Sikorsky Model S-76C helicopters, serial 
numbers 760501 and 760506 through 760761, to determine if a metallic 
foil shunt is installed, and if so, removing it.
    This unsafe condition is likely to exist or develop on other 
helicopters of the same type design. Therefore, this AD is being issued 
to require inspecting the flotation system connector to determine if a 
metallic foil shunt is installed, which could prevent the flotation 
system from deploying and could prevent the helicopter from staying 
afloat long enough to enable emergency evacuation after a water 
landing. This AD requires, before the next flight over water, or on or 
before 30 days after the effective date of this AD, whichever occurs 
first, accomplishing the actions by following specified portions of the 
alert service bulletin described previously.
    The short compliance time involved is required because the 
previously described critical unsafe condition could adversely affect 
the ability of the helicopter to stay afloat after an emergency water 
landing. Therefore, inspecting the flotation system connector and 
removing any metallic foil shunt that is found is required before the 
next flight over water, or on or before 30 days after the effective 
date of this AD, whichever occurs first, and this AD must be issued 
immediately.
    Since a situation exists that requires the immediate adoption of 
this regulation, it is found that notice and opportunity for prior 
public comment hereon are impracticable, and that good cause exists for 
making this amendment effective in less than 30 days.
    We estimate that this AD will affect 76 helicopters, and inspection 
and removal, if necessary, will take approximately 1 work hour to 
accomplish at an average labor rate of $85 per work hour. Based on 
these figures, we estimate the total cost impact of the AD on U.S. 
operators to be $6,460.

Comments Invited

    This AD is a final rule that involves requirements that affect 
flight safety and was not preceded by notice and an opportunity for 
public comment; however, we invite you to submit any written data, 
views, or arguments regarding this AD. Send your comments to an address 
listed under ADDRESSES. Include ``Docket No. FAA-2010-0242; Directorate 
Identifier 2009-SW-27-AD'' at the beginning of your comments. We 
specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of the AD. We will consider all 
comments received by the closing date and may amend the 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 AD. 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 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).

Regulatory Findings

    We have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will 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 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 an economic evaluation of the estimated costs to comply 
with this AD. See the AD docket to examine the economic evaluation.

[[Page 12667]]

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.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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

Sec.  39.13  [Amended]

0
2. Section 39.13 is amended by adding a new airworthiness directive to 
read as follows:

2010-06-08 Sikorsky Aircraft Corporation: Amendment 39-16232. Docket 
No. FAA-2010-0242; Directorate Identifier 2009-SW-27-AD.

    Applicability: Sikorsky Aircraft Corporation Model S-76C 
helicopters, serial numbers 760501 and 760506 through 760761, with 
Option Code 88051 Flotation System installed by Keystone Helicopter 
Corporation, certificated in any category.
    Compliance: Before the next flight over water, or within 30 
days, whichever occurs first, unless accomplished previously.
    To determine if a metallic foil shunt is installed in the 
flotation system, which could prevent the flotation system from 
deploying and could prevent the helicopter from staying afloat long 
enough to enable emergency evacuation after a water landing, 
accomplish the following:
    (a) Inspect the flotation system connector and if a metallic 
foil shunt is found, remove it in accordance with the Accomplishment 
Instructions, paragraphs 3.A.(1) through 3.A.(9), in Sikorsky Alert 
Service Bulletin No. 76-32-30, dated April 8, 2009.
    (b) 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: Terry Fahr, 12 New England Executive Park, Burlington, MA 
01803, telephone (781) 238-7155, fax (781) 238-7170.
    (c) The inspection shall be done in accordance with the 
specified portions of Sikorsky Alert Service Bulletin No. 76-32-30, 
dated April 8, 2009. The Director of the Federal Register approved 
this incorporation by reference in accordance with 5 U.S.C. 552(a) 
and 1 CFR part 51. Copies may be obtained from Sikorsky Aircraft 
Corporation, Attn: Manager, Commercial Technical Support, mailstop 
s581a, 6900 Main Street, Stratford, CT, telephone (203) 383-4866, e-
mail address tsslibrary@sikorsky.com, or at http://www.sikorsky.com. 
Copies may be inspected at the FAA, Office of the Regional Counsel, 
Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas or 
at the National Archives and Records Administration (NARA). For 
information on the availability of this material at NARA, call 202-
741-6030, or go to: http://www.archives.gov/federal_register/code_
of_federal_regulations/ibr_locations.html.

Joint Aircraft System/Component (JASC) Code

    (d) JASC Code 3212: Emergency Flotation Systems.
    (e) This amendment becomes effective on April 1, 2010.

    Issued in Fort Worth, Texas, on February 3, 2010.
Mark R. Schilling,
Acting Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 2010-5294 Filed 3-16-10; 8:45 am]
BILLING CODE 4910-13-P