Airworthiness Directives; Hamilton Sundstrand Model 14RF-19 Propellers

[Federal Register Volume 71, Number 146 (Monday, July 31, 2006)]
[Rules and Regulations]
[Pages 43041-43043]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E6-12109]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-21691; Directorate Identifier 2005-NE-13-AD; 
Amendment 39-14701; AD 2006-16-01]
RIN 2120-AA64


Airworthiness Directives; Hamilton Sundstrand Model 14RF-19 
Propellers

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is superseding an existing airworthiness directive 
(AD) for Hamilton Sundstrand model 14RF-19 propellers. That AD 
currently requires replacing certain actuator yokes with improved 
actuator yokes. This AD requires the same actions. This AD results from 
the discovery of a part number (P/N) error in the applicability 
paragraph of AD 2006-12-19. We are

[[Page 43042]]

issuing this AD to prevent actuator yoke arms breaking during flight, 
which could cause high propeller vibration and contribute to reduced 
controllability of the airplane.

DATES: Effective August 30, 2006. The Director of the Federal Register 
previously approved the incorporation by reference of certain 
publications listed in the regulations as of July 18, 2006 (71 FR 
34003; June 13, 2006).
    We must receive any comments on this AD by September 29, 2006.

ADDRESSES: Use one of the following addresses to comment on this 
proposed AD.
    <bullet> DOT Docket Web site: Go to http://dms.dot.gov and follow 
the instructions for sending your comments electronically.
    <bullet> Government-wide rulemaking Web site: Go to http://www.regulations.gov and follow the instructions for sending your 
comments electronically.
    <bullet> Mail: Docket Management Facility; U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, 
Washington, DC 20590-0001.
    <bullet> Fax: (202) 493-2251.
    <bullet> Hand Delivery: Room PL-401 on the plaza level of the 
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    Contact Hamilton Sundstrand, A United Technologies Company, 
Publication Manager, Mail Stop 1A-3-Z63, One Hamilton Road, Windsor 
Locks, CT 06096; fax 1-860-654-5107 for the service information 
identified in this AD.

FOR FURTHER INFORMATION CONTACT: Frank Walsh, Aerospace Engineer, 
Boston Aircraft Certification Office, FAA, Engine and Propeller 
Directorate, 12 New England Executive Park, Burlington, MA 01803; 
telephone (781) 238-7158; fax (781) 238-7170.

SUPPLEMENTARY INFORMATION: On June 6, 2006, the FAA issued AD 2006-12-
19, Amendment 39-14645 (71 FR 34003, June 13, 2006). That AD requires 
replacing certain actuator yokes with improved actuator yokes on 
Hamilton Sundstrand model 14RF-19 propellers. That AD resulted from 
certain propeller system actuator yoke arms breaking during flight. 
That condition, if not corrected, could result in actuator yoke arms 
breaking during flight, which could cause high propeller vibration and 
contribute to reduced controllability of the airplane.

Actions Since AD 2006-12-19 Was Issued

    Since that AD was issued, we discovered a P/N error in 
applicability paragraph (c). Actuator assemblies P/N 790119-6 should be 
P/N 790199-6. AD 2006-12-19 technically cannot be complied with having 
an incorrect P/N. This AD supersedure corrects that P/N.

Relevant Service Information

    We have reviewed and approved the technical contents of Hamilton 
Sundstrand Service Bulletin 14RF-19-61-113, Revision 1, dated September 
2, 2003, that describes procedures for installing a new propeller 
system actuator yoke arm, P/N 810436-3.

FAA's Determination and Requirements of This AD

    The unsafe condition described previously is likely to exist or 
develop on other Hamilton Sundstrand model 14RF-19 propellers of the 
same type design. We are issuing this AD to prevent actuator yoke arms 
breaking during flight, which could cause high propeller vibration and 
contribute to reduced controllability of the airplane. This AD requires 
replacing the actuator yoke arm, P/N 810436-2, on model 14RF-19 
propellers with an improved actuator yoke arm, P/N 810436-3. You must 
use the service information described previously to perform the actions 
required by this AD.

FAA's Determination of the Effective Date

    Since an unsafe condition exists that requires the immediate 
adoption of this AD, we have found that notice and opportunity for 
public comment before issuing this AD are impracticable, and that good 
cause exists for making this amendment effective in less than 30 days.

Comments Invited

    This AD is a final rule that involves requirements affecting flight 
safety and was not preceded by notice and an opportunity for public 
comment; however, we invite you to send us any written relevant data, 
views, or arguments regarding this AD. Send your comments to an address 
listed under ADDRESSES. Include ``AD Docket No. FAA-2005-21691; 
Directorate Identifier 2005-NE-13-AD'' in the subject line of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of the rule that might 
suggest a need to modify it.
    We will post all comments we receive, without change, to http://dms.dot.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 the DMS Web 
site, anyone can find and read the comments in any of our dockets, 
including 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) or you may visit 
http://dms.dot.gov.

Examining the AD Docket

    You may examine the docket that contains the AD, any comments 
received, and any final disposition in person at the Docket Management 
Facility Docket Office between 9 a.m. and 5 p.m., Monday through 
Friday, except Federal holidays. The Docket Office (telephone (800) 
647-5227) is located on the plaza level of the Department of 
Transportation Nassif Building at the street address stated in 
ADDRESSES. Comments will be available in the AD docket shortly after 
the DMS receives them.

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 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;

[[Page 43043]]

    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 summary of the costs to comply with this AD and 
placed it in the AD Docket. You may get a copy of this summary by 
sending a request to us at the address listed under ADDRESSES.

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

0
Under 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. The FAA amends Sec.  39.13 by removing Amendment 39-14645 (71 FR 
34003, June 13, 2006), and by adding a new airworthiness directive, 
Amendment 39-14701, to read as follows:

2006-16-01 Hamilton Sundstrand: Amendment 39-14701. Docket No. FAA-
2005-21691; Directorate Identifier 2005-NE-13-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective August 
15, 2006.

Affected ADs

    (b) This AD supersedes AD 2006-12-19.

Applicability

    (c) This AD applies to Hamilton Sundstrand Model 14RF-19 
propellers with propeller system actuator yoke arms, part number (P/
N) 810436-2, which might be installed in actuator assemblies P/N 
790199-6. These propellers are installed on, but not limited to, 
SAAB 340 airplanes.

Unsafe Condition

    (d) This AD results from the discovery of a part number (P/N) 
error in the applicability paragraph of AD 2006-12-19. We are 
issuing this AD to prevent actuator yoke arms breaking during 
flight, which could cause high propeller vibration and contribute to 
reduced controllability of the airplane.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within 60 days after the effective date of this AD, 
unless the actions have already been done.

Install Improved Actuator Yoke Arms

    (f) Using the Accomplishment Instructions of Hamilton Sundstrand 
Service Bulletin 14RF-19-61-113, Revision 1, dated September 2, 
2003, replace all actuator yoke arms, P/N 810436-2, with improved 
actuator yoke arms, P/N 810436-3.
    (g) Mark newly installed actuators using the Accomplishment 
Instructions of Hamilton Sundstrand Service Bulletin 14RF-19-61-113, 
Revision 1, dated September 2, 2003.
    (h) After the effective date of this AD, do not install any 
actuator yoke arms, P/N 810436-2, into any propeller assembly.

Alternative Methods of Compliance

    (i) The Manager, Boston Aircraft 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

    (j) None.

Material Incorporated by Reference

    (k) You must use Hamilton Sundstrand Service Bulletin 14RF-19-
61-113, Revision 1, dated September 2, 2003, to perform the 
replacements and marking required by this AD. The Director of the 
Federal Register previously approved the incorporation by reference 
of this service bulletin as of July 18, 2006 (71 FR 34003; June 13, 
2006) in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact 
Hamilton Sundstrand, A United Technologies Company, Publication 
Manager, Mail Stop 1A-3-Z63, One Hamilton Road, Windsor Locks, CT 
06096; fax 1-860-654-5107, for a copy of this service information. 
You may review copies at the FAA, New England Region, Office of the 
Regional Counsel, 12 New England Executive Park, Burlington, MA; 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/cfr/ibr-locations.html.

    Issued in Burlington, Massachusetts, on July 24, 2006.
Francis A. Favara,
Manager, Engine and Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. E6-12109 Filed 7-28-06; 8:45 am]
BILLING CODE 4910-13-P

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