AD 2001-25-04

[Federal Register Volume 66, Number 244 (Wednesday, December 19, 2001)]
[Rules and Regulations]
[Pages 65426-65427]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 01-30951]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 99-NE-17-AD; Amendment 39-12557; AD 2001-25-04]
RIN 2120-AA64


Airworthiness Directives; Honeywell International Inc. Models 
LTS101-600A-2 and LTS101-600A-3 Turboshaft Engines; and LTP101-600A-1A 
and LTP101-700A-1A Turboprop Engines

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment adopts a new airworthiness directive (AD), that 
is applicable to Honeywell International Inc. (formerly AlliedSignal 
Inc. and Textron Lycoming) Models LTS101-600A-2 and LTS101-600A-3 
turboshaft engines; and LTP101-600A-1A and LTP101-700A-1A turboprop 
engines. This amendment requires replacing certain fuel controls that 
have beryllium-copper bellows with improved fuel controls that 
incorporate Inconel 718 stainless steel welded bellows. This amendment 
is prompted by a report of an uncommanded power loss on a Textron 
Lycoming LTS101 engine due to a corrosion damaged fuel control bellows. 
The actions specified by this AD are intended to prevent the engine 
from reducing the fuel flow to minimum flow resulting in an uncommanded 
power loss.

DATES: Effective date January 23, 2002.

ADDRESSES: The information in this AD may be examined at the Federal 
Aviation Administration (FAA), New England Region, Office of the 
Regional Counsel, 12 New England Executive Park, Burlington, MA.

FOR FURTHER INFORMATION CONTACT: Robert Baitoo, Aerospace Engineer, Los 
Angeles Aircraft Certification Office, FAA, Transport Airplane 
Directorate, 3960 Paramount Blvd., Lakewood, CA 90712-4137; telephone 
(562) 627-5245, fax (562) 627-5210.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) to include an AD that is 
applicable to Honeywell International Inc. (formerly AlliedSignal Inc. 
and Textron Lycoming) Models LTS101-600A-2 and LTS101-600A-3 turboshaft 
engines; and LTP101-600A-1A and LTP101-700A-1A turboprop engines was 
published in the Federal Register on March 12, 2001 (66 FR 14345). That 
action proposed to require replacement of fuel controls with the 
following part numbers with an improved design fuel control that 
incorporates an Inconel 718 stainless steel welded bellows.

4-301-098-01
4-301-098-04
4-301-098-10
4-301-098-15
4-301-288-01
4-301-288-04
4-303-023-01
4-303-023-02
4-303-023-03
4-303-023-04
4-303-033-01
4-303-033-02
4-303-033-04

Comments

    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were received on the 
proposal or the FAA's determination of the cost to the public. The FAA 
has determined that air safety and the public interest require the 
adoption of the rule as proposed.

Economic Analysis

    The FAA estimates that 40 engines installed on aircraft of U.S. 
registry would be affected by this proposed AD and that it would take 
approximately 3 work hours per engine to accomplish the proposed 
actions. The average labor rate is $60 per work hour. There are no 
required parts costs. Based on these figures, the total cost effect of 
the proposed AD on U.S. operators is estimated to be $7,200.

Regulatory Analysis

    This final rule does not have federalism implications, as defined 
in Executive Order 13132, because it 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. Accordingly, 
the FAA has not consulted with state authorities prior to publication 
of this final rule.
    For the reasons discussed above, I certify that this action (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) if promulgated, 
will not have a significant economic effect, positive or negative, on a 
substantial number of small entities under the criteria of the 
Regulatory Flexibility Act. A final evaluation has been prepared for 
this action and it is

[[Page 65427]]

contained in the Rules Docket. A copy of it may be obtained by 
contacting the Rules Docket at the location provided under the caption 
ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

Adoption of the Amendment

    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

    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]

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

2001-25-04  Honeywell International Inc.: Amendment 39-12557. Docket 
No. 99-NE-17-AD.

Applicability

    This airworthiness directive (AD) is applicable to Honeywell 
International Inc. (formerly AlliedSignal Inc. and Textron Lycoming) 
Models LTS101-6000A-2 and LTS101-600A-3 turboshaft engines; and 
LTP101-600A-1A and LTP101-700A-1A turboprop engines with fuel 
controls with the following part numbers (P/N's) installed:

                      Table 1.--Fuel Control P/N's
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            Engine Model No.                     Fuel Control P/N
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LTS101-600A-2..........................  4-301-098-01, 4-301-098-04, 4-
                                          301-098-10, 4-301-098-15.
LTS101-600A-3..........................  4-301-288-01, 4-301-288-04.
LTP101-600A-1A.........................  4-303-023-01, 4-303-023-02, 4-
                                          303-023-03, 4-303-023-04.
LTP101-700A-1A.........................  4-303-033-01, 4-303-033-02, 4-
                                          303-033-04.
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These engines are used on, but not limited to, Aerospatiale AS350 
helicopters and Air Tractor AT-302, Page Thrush, Piaggio P.166-DL3, 
and Riley International R421 airplanes.

    Note 1: This AD applies to each engine identified in the 
preceding applicability provision, regardless of whether it has been 
modified, altered, or repaired in the area subject to the 
requirements of this AD. For engines that have been modified, 
altered, or repaired so that the performance of the requirements of 
this AD is affected, the owner/operator must request approval for an 
alternative method of compliance in accordance with paragraph (b) of 
this AD. The request should include an assessment of the effect of 
the modification, alteration, or repair on the unsafe condition 
addressed by this AD; and, if the unsafe condition has not been 
eliminated, the request should include specific proposed actions to 
address it.

Compliance

    Compliance with this AD is required at the next replacement of 
the fuel control or within 12 calendar months after the effective 
date of this AD, whichever occurs first.
    To prevent the engine from reducing the fuel flow to minimum 
flow resulting in an uncommanded power loss:
    (a) Remove any fuel control that has one of the P/N's listed in 
Table 1 of this AD, and replace with a fuel control that does not 
have one of the part numbers listed in Table 1 of this AD.

Alternative Methods of Compliance

    (b) An alternative method of compliance or adjustment of the 
compliance time that provides an acceptable level of safety may be 
used if approved by the Manager, Los Angles Aircraft Certification 
Office (LAACO). Operators must submit their request through an 
appropriate FAA Principal Maintenance Inspector, who may add 
comments and then send it to the Manager, LAACO.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this airworthiness directive, 
if any, may be obtained from the LAACO.

Special Flight Permits

    (c) Special flight permits may be issued in accordance 
Secs. 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 
21.197 and 21.199) to operate the aircraft to a location where the 
requirements of this AD can be accomplished.

Effective Date

    (d) This amendment becomes effective on January 23, 2002.

    Issued in Burlington, Massachusetts, on December 7, 2001.
Jay J. Pardee,
Manager, Engine and Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 01-30951 Filed 12-18-01; 8:45 am]
BILLING CODE 4910-13-P