AD 2002-03-09 R1

AD Final Rules - 020309r1.pdf
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AD Number:
2002-03-09 R1
Document Type:
AD Final Rules
Docket Number:
2000-NE-14-AD
Subject Heading:
Airworthiness Directives; Honeywell International Inc. (formerly AlliedSignal Inc. and Textron Lycom...Show more
Subject:
Impellers
Status:
Current
Citation:
Federal Register: March 21, 2002 (Volume 67, Number 55)
Citation Publish Date:
03/21/2002
Effective Date:
03/27/2002
Make:
Honeywell International Inc.
Model:
LTP 101-600 | LTP 101-600A | LTP 101-600A-1A | LTP 101-700A-1A | LTS101-600A-2 | LTS101-600A-3 | LTS...Show more
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
2002-03-09
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register: March 21, 2002 (Volume 67, Number 55)]


[Rules and Regulations]


[Page 13089-13091]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr21mr02-3]


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DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. 2000-NE-14-AD; Amendment 39-12676; AD 2002-03-09 R1]


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; request for comments.


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SUMMARY:
 
This amendment revises an existing airworthiness directive (AD), that is applicable to


Honeywell International Inc. (formerly AlliedSignal Inc. and Textron Lycoming) LTS101 series


turboshaft and LTP101 series turboprop engines. The existing AD will become effective on March 27,


2002, and 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 requires the same inspections, and in addition, allows installation of


impellers that pass those inspections. This revision to the existing AD is prompted by an inadvertent


omission in the existing AD to include allowance of installation of impellers that pass inspections


required by the AD. 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 March 27, 2002. The incorporation by reference of certain publications listed in the


rule was approved by the Director of the Federal Register as of March 27, 2002.


Comments for inclusion in the Rules Docket must be received on or before May 20, 2002.


ADDRESSES:
 
Submit comments in triplicate to the Federal Aviation Administration (FAA), New


England Region, Office of the Regional Counsel, Attention: Rules Docket No. 2000-NE-14-AD, 12 New


England Executive Park, Burlington, MA 01803-5299. Comments may be inspected at this location, by


appointment, between 8:00 a.m. and 4:30 p.m., Monday through Friday, except Federal holidays.


Comments may also be sent via the Internet using the following address: 9-ane-adcomment@faa.gov.


Comments sent via the Internet must contain the docket number in the subject line.


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
2


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.


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:
 
On February 5, 2002, the FAA issued AD 2002-


03-09, Amendment 39-12650 (67 FR 7609, February 20, 2002), 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. That action was prompted by a report


of a machining discrepancy that may have occurred during manufacture of the affected impellers. That


AD will become effective on March 27, 2002.


In this revision the FAA has added to paragraph (c) the authority to allow the reinstallation of


impellers P/N's 4-101-052-57 or 4-101-052-62 that pass the required inspections. In all other respects, the


AD remains the same as currently published. The FAA is therefore making this revision effective on


March 27, 2002, in order to reduce the paperwork burden on operators.


Manufacturer's Service Information


Honeywell International Inc. (formerly AlliedSignal Inc. and Textron Lycoming) has issued


AlliedSignal Service Bulletin (SB) LT 101-72-30-0186, dated October 1, 1999, and Honeywell


International SB LT 101-72-30-0186, Revision 1, dated April 25, 2000, that specify a one-time visual


inspection for surface finish and a one-time fluorescent penetrant inspection for cracks of certain


impellers.


Differences Between This AD and the Manufacturer's Service Bulletins


To assure that the unsafe condition is addressed in a timely fashion, this amendment will require a


one-time visual inspection for surface finish and a one-time fluorescent penetrant inspection for cracks of


impellers part numbers (P/N's) 4-101-052-57/-62 within 900 gas generator (Ng) cycles after the effective


date of this AD.


FAA's Determination of an Unsafe Condition and Required Actions


Since an unsafe condition has been identified that is likely to exist or develop on other Honeywell


International Inc. (formerly AlliedSignal
 
Inc. and Textron Lycoming) LTS101 series turboshaft and


LTP101 series turboprop engines of the same type design, this AD is being issued to prevent impeller


failure from cracks in the impeller back face area, which could result in an uncontained engine failure.


Immediate Adoption of This AD


Since a situation exists that requires the immediate adoption of this regulation, it is found that notice


and opportunity for prior public comment hereon are unnecessary, and that good cause exists for making


this amendment effective in less than 30 days.


Comments Invited


Although this action is in the form of a final rule that involves requirements affecting flight safety


and, thus, was not preceded by notice and an opportunity for public comment, comments are invited on


this rule. Interested persons are invited to comment on this rule by submitting such written data, views, or


arguments as they may desire. Communications should identify the Rules Docket number and be