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Airworthiness Directives; AlliedSignal Inc. (Formerly Textron Lycoming and Avco Lycoming) Model T5313B and T5317 Series Turboshaft Engines
Rules and Regulations
D09002ee1be060bfc
D09002ee1be060cb2
United States
Department of Transportation
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org
United States Government Agency or Subagency
United States
Federal Aviation Administration
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org
United States Government Agency or Subagency
This amendment supersedes an existing airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Textron Lycoming and Avco Lycoming) Model T5313B and T5317 series turboshaft engines, that currently requires initial and repetitive dye penetrant inspections of the centrifugal compressor impeller for cracks, and if necessary, removal from service. This amendment requires the use of a new, more conservative minor cycle counting factors table, introduces a method for prorating past centrifugal compressor impeller usage based on the new cycle counting factors, provides an enhanced centrifugal compressor impeller inspection procedure, and eliminates flyback criteria based on crack size. For those centrifugal compressor impellers that exceed their published life limit, this amendment implements a schedule for safe removal of time-expired parts. This amendment is prompted by a report of an uncontained centrifugal compressor impeller failure and subsequent rotorcraft accident. The actions specified by this AD are intended to prevent centrifugal compressor impeller failure, which can result in an uncontained engine failure, inflight engine shutdown, or damage to the rotorcraft.
60 FR 24762
https://www.govinfo.gov/app/details/FR-1995-05-10/95-11353
95-11353
fr10my95-2
4910-13-P
Docket No. 94-ANE-45
Amendment 39-9221
AD 95-10-04
https://www.govinfo.gov/app/details/FR-1995-05-10/95-11353
https://www.govinfo.gov/content/pkg/FR-1995-05-10/html/95-11353.htm
https://www.govinfo.gov/content/pkg/FR-1995-05-10/pdf/95-11353.pdf
4 p.
24762
24765
60 FR 24762
Code of Federal Regulations
Title 14 Part 39
14 CFR Part 39
Airworthiness Directives; AlliedSignal Inc. (Formerly Textron Lycoming and Avco Lycoming) Model T5313B and T5317 Series Turboshaft Engines; Federal Register Vol. 60, Issue
RULE
95-11353
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
1995-05-25
Docket No. 94-ANE-45
Amendment 39-9221
AD 95-10-04
4910-13-P
95-11353
Final rule; request for comments.
This amendment supersedes an existing airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Textron Lycoming and Avco Lycoming) Model T5313B and T5317 series turboshaft engines, that currently requires initial and repetitive dye penetrant inspections of the centrifugal compressor impeller for cracks, and if necessary, removal from service. This amendment requires the use of a new, more conservative minor cycle counting factors table, introduces a method for prorating past centrifugal compressor impeller usage based on the new cycle counting factors, provides an enhanced centrifugal compressor impeller inspection procedure, and eliminates flyback criteria based on crack size. For those centrifugal compressor impellers that exceed their published life limit, this amendment implements a schedule for safe removal of time-expired parts. This amendment is prompted by a report of an uncontained centrifugal compressor impeller failure and subsequent rotorcraft accident. The actions specified by this AD are intended to prevent centrifugal compressor impeller failure, which can result in an uncontained engine failure, inflight engine shutdown, or damage to the rotorcraft.
Effective May 25, 1995.
Daniel Kerman, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803-5299; telephone (617) 238-7130, fax (617) 238-7199.
Federal Register
Vol. 60, no. 90
Office of the Federal Register, National Archives and Records Administration
1995-05-10
continuing
daily
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365 p.
Table of Contents:
AE 2.7:
GS 4.107:
AE 2.106:
KF70.A2
https://www.govinfo.gov/app/details/FR-1995-05-10
P0b002ee180a8199c
0097-6326
0042-1219
0364-1406
769-004-00000-9
000582072
f:fr10my95
https://www.govinfo.gov/app/details/FR-1995-05-10
https://www.govinfo.gov/content/pkg/FR-1995-05-10/pdf/FR-1995-05-10.pdf
fdlp
24761
25117
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2010-09-25
2023-05-07
FR-1995-05-10
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FR-1995-05-10
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