Airworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal Inc. and Textron Lycoming) LTS101 Series Turboshaft and LTP101 Series Turboprop Engines

[Federal Register Volume 67, Number 34 (Wednesday, February 20, 2002)]
[Rules and Regulations]
[Pages 7609-7611]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 02-3578]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2000-NE-14-AD; Amendment 39-12650; AD 2002-03-09]
RIN 2120-AA64


Airworthiness Directives; Honeywell International Inc. (Formerly 
AlliedSignal Inc. and Textron Lycoming) LTS101 Series Turboshaft and 
LTP101 Series 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) LTS101 series turboshaft and LTP101 series 
turboprop engines. This amendment requires a one-time visual inspection 
for surface finish and a one-time fluorescent penetrant inspection for 
cracks of certain impellers installed on LTS101 series turboshaft and 
LTP101 series turboprop engines. This amendment is prompted by a report 
of a machining discrepancy that may have occurred during manufacture of 
the affected impellers. The actions specified by this AD are intended 
to prevent impeller failure from cracks in the impeller back face area, 
which could result in an uncontained engine failure.

DATES: Effective date March 27, 2002.
     The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of March 27, 2002.

ADDRESSES: The service information referenced in this AD may be 
obtained from Honeywell International Inc. Aerospace Services Attn.: 
Data Distribution, M/S 64-3/2101-201, PO Box 29003, Phoenix, AZ 85038-
9003; telephone (602) 365-2493, fax (602) 365-5577. This information 
may be examined, by appointment, at the Federal Aviation Administration 
(FAA), New England Region, Office of the Regional Counsel, 12 New 
England Executive Park, Burlington, MA; or at the Office of the Federal 
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

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) LTS101 series turboshaft and LTP101 series 
turboprop engines was published in the Federal Register on October 29, 
2001 (66 FR 54463). That action proposed to require a one-time visual 
inspection for surface finish and a one-time fluorescent penetrant 
inspection for cracks of certain impellers installed on LTS101 series 
turboshaft and LTP101 series turboprop engines in accordance with 
AlliedSignal Service Bulletin (SB) LT 101-72-30-0186, dated October 1, 
1999, or Honeywell International Inc. SB LT 101-72-30-0186, Revision 1, 
dated April 25, 2000.

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 600 engines installed on aircraft of U.S. 
registry would be affected by this AD and that it would take 
approximately 4 work hours per engine to accomplish the inspection. The 
average labor rate is $60 per work hour. There are no required parts 
costs. Based on these figures, the total cost effect of this AD on U.S. 
operators is estimated to be $144,000.

Regulatory Analysis

    This final rule does not have federalism implications, as defined 
in Executive Order 13132, because it would not have a substantial 
direct

[[Page 7610]]

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 impact, 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 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, Incorporation by 
reference, 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:

2002-03-09  Honeywell International Inc.: Amendment 39-12650. Docket 
No. 2000-NE-14-AD.

Applicability

    This airworthiness directive (AD) is applicable to Honeywell 
International Inc. (formerly AlliedSignal Inc. and Textron Lycoming) 
LTS101 series turboshaft and LTP101 series turboprop engines with 
the following centrifugal compressor impeller part numbers (P/N's) 
installed: 4-101-052-57 and 4-101-052-62, except those with a P/N or 
serial number (SN) listed in paragraphs 1.A.(1) through 1.A.(3) of 
AlliedSignal Service Bulletin (SB) LT 101-72-30-0186, dated October 
1, 1999, or Honeywell International Inc. SB LT 101-72-30-0186, 
Revision 1, dated April 25, 2000. These engines are installed on, 
but not limited to Aerospatiale AS350, Eurocopter MBB-BK117 and HH-
65A, Bell 222, Page Thrush, Air Tractor AT-302, Piaggio P.166-DL3, 
Riley International R421, and Pacific Aero 08-600 aircraft.

    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 (d) 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 as indicated, unless already 
done.
    To prevent impeller failure from cracks in the impeller back 
face area, which could result in an uncontained engine failure, do 
the following:
    (a) Within 900 gas generator (Ng) cycles after the effective 
date of this AD, conduct a one-time visual inspection for surface 
finish and fluorescent penetrant inspection of impellers P/N 4-101-
052-57 and 4-101-052-62 for cracks in accordance with paragraphs 3.A 
through 3.F. of the Accomplishment Instructions of AlliedSignal SB 
LT 101-72-30-0186, dated October 1, 1999, or Honeywell International 
Inc. SB LT 101-72-30-0186, Revision 1, dated April 25, 2000.
    (b) Replace all impellers that exceed the acceptable limits of 
the Accomplishment Instructions of AlliedSignal Service Bulletin 
(SB) LT 101-72-30-0186, dated October 1, 1999, or Honeywell 
International Inc. SB LT 101-72-30-0186, Revision 1, dated April 25, 
2000, with a serviceable impeller.
    (c) After the effective date of this AD, do not install impeller 
P/N's 4-101-052-57 or 4-101-052-62, except those with an impeller P/
N or SN listed in paragraphs 1. A.(1) through 1. A.(3) of 
AlliedSignal SB LT 101-72-30-0186, dated October 1, 1999, or 
Honeywell International Inc. SB LT 101-72-30-0186, Revision 1, dated 
April 25, 2000.

Alternative Methods of Compliance

    (d) 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

    (e) 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 done.

Documents That Have Been Incorporated by Reference

    (f) The inspections must be done in accordance with the 
following SB's:

----------------------------------------------------------------------------------------------------------------
         Document No.                 Pages           Revision               Date
-----------------------------------------------------------------------------------------
AlliedSignal SB LT 101-72-30-   All.............  Original........  Oct. 1, 1999.
 0186.
    Total pages: 7
Honeywell International Inc.    1...............  Original........  Oct. 1, 1999.
 SB LT 101-72-30-0186.          2...............  1...............  Apr. 25, 2000.
                                3-6.............  Original........  Oct. 1, 1999.
                                7...............  1...............  Apr. 25, 2000.
    Total pages: 7
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This incorporation by reference was approved by the Director of the 
Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 
51. Copies may be obtained from Honeywell International Inc. 
Aerospace Services Attn.: Data Distribution, M/S 64-3/2101-201, PO 
Box 29003, Phoenix, AZ 85038-9003; telephone (602) 365-2493, fax 
(602) 365-5577. Copies may be inspected, by appointment, at the FAA, 
New England Region, Office of the Regional Counsel, 12 New England 
Executive Park, Burlington, MA; or at the Office of the Federal 
Register, 800 North Capitol Street, NW, suite 700, Washington, DC.

Effective Date

    (g) This amendment becomes effective on March 27, 2002.

[[Page 7611]]


    Issued in Burlington, Massachusetts, on February 5, 2002.
Jay J. Pardee,
Manager, Engine and Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 02-3578 Filed 2-19-02; 8:45 am]
BILLING CODE 4910-13-P

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