Airworthiness Directives; Hamilton Sundstrand Model 14RF-19 Propellers

[Federal Register Volume 71, Number 113 (Tuesday, June 13, 2006)]
[Rules and Regulations]
[Pages 34003-34004]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-5284]


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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 39-14645; AD 2006-12-19]
RIN 2120-AA64


Airworthiness Directives; Hamilton Sundstrand Model 14RF-19 
Propellers

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

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
Hamilton Sundstrand model 14RF-19 propellers. This AD requires 
replacing certain actuator yokes with improved actuator yokes. This AD 
results from certain propeller system actuator yoke arms breaking 
during flight. 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.

DATES: This AD becomes effective July 18, 2006. The Director of the 
Federal Register approved the incorporation by reference of certain 
publications listed in the regulations as of July 18, 2006.

ADDRESSES: You can get the service information identified in this AD 
from 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.
    You may examine the AD docket on the Internet at http://dms.dot.gov 
or in Room PL-401 on the plaza level of the Nassif Building, 400 
Seventh Street, SW., Washington, DC.

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: We proposed to amend 14 CFR part 39 with a 
proposed AD. The proposed AD applies to Hamilton Sundstrand Model 14RF-
19 propellers. We published the proposed AD in the Federal Register on 
December 8, 2005 (70 FR 72947). That action proposed to require 
replacing certain actuator yokes with improved actuator yokes.

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.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no comments on the proposal or on 
the determination of the cost to the public.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD as proposed.

Costs of Compliance

    We estimate that 80 actuator yoke arms installed on airplanes of 
U.S. registry will be affected by this AD. We also estimate that the 
required parts will cost approximately $1,350 per propeller and that it 
will take about 2 workhours per propeller to perform the actions, and 
that the average labor rate is $65 per workhour. Based on these 
figures, we estimate the total cost of the AD to be $118,400.

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 this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under 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

[[Page 34004]]

this summary 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
Accordingly, under the authority delegated to me by the Administrator, 
the Federal Aviation Administration amends 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 adding the following new airworthiness 
directive:

2006-12-19 Hamilton Sundstrand: Amendment 39-14645. Docket No. FAA-
2005-21691; Directorate Identifier 2005-NE-13-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective July 18, 
2006.

Affected ADs

    (b) None.

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 
790119-6. These propellers are installed on, but not limited to, 
SAAB 340 airplanes.

Unsafe Condition

    (d) This AD results from propeller system actuator yoke arms 
breaking during flight. 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 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 approved the incorporation by reference of this 
service bulletin 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 Docket Management 
Facility; U.S. Department of Transportation, 400 Seventh Street, 
SW., Nassif Building, Room PL-401, Washington, DC 20590-0001, on the 
internet at http://dms.dot.gov, 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 June 6, 2006.
Thomas A. Boudreau,
Acting Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 06-5284 Filed 6-12-06; 8:45 am]
BILLING CODE 4910-13-P

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