AD 79-06-06 R2

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AD Number:
79-06-06 R2
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
AVCO LYCOMING DIVISION Model LTS101-600A, -600B, -600A-2, and -650A-2 and LTP101-600 and -600A Engines
Subject:
Lubrication System Contamination
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/02/1980
Make:
Honeywell International Inc.
Model:
LTP 101-600 | LTP 101-600A | LTS101-600A | LTS101-600A-2 | LTS101-600B | LTS101-650A-2
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
Applicability Note: This AD references Engine Models LTS101-600B and LTS101-650A-2 not included on ...Show more
AIRWORTHINESS DIRECTIVES FINAL RULES: 79-06-06 R2
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3795

AD NUMBER:   79-06-06 R2

SUBJECT HEADING:   AVCO LYCOMING DIVISION Model LTS101-600A, -600B, -600A-2, and -650A-2 and LTP101-600 and -600A Engines

ACTION:  

SUMMARY:  

DATES:   Effective June 2, 1980.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   79-06-06 R2 AVCO LYCOMING DIVISION: Amendment 39-3440 as amended by Amendment 39-3506 is further amended by Amendment 39-3795. Applies to all LTS101-600A, -600B, -600A-2, and -650A-2 turboshaft and LTP101-600 and -600A turboprop engines.
Compliance required as indicated.
1. To prevent undetected lubrication system contamination leading to oil starvation of engine bearings and subsequent engine stoppage, accomplish the following within the next 5 hours of engine operation unless already accomplished and every 25 hours thereafter:
Perform a spectrometric oil analysis as outlined in the applicable Avco Lycoming Engine Maintenance Manual, Chapter 71-00-00, and in accordance with Avco Lycoming Alert Notice, Reference 3V- W714, dated February 16, 1979, or equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region. If any of the following spectrometric oil analysis limits are exceeded, inspect and repair, prior to further flight, in accordance with Chapter 72-00-00, Paragraph 13, of the appropriate Avco Lycoming Engine Maintenance Manual:
a. Iron content, six parts per million.
b. Between consecutive spectrometric oil analysis, iron content increases by three parts per million.
c. Any other metal, five parts per million.
NOTE: Engine operation not to exceed 4 calendar days or 25 hours between extraction of oil sample and obtaining spectrometric oil analysis results is authorized.
2. For LTP101-600 and 600A turboprop engines, S/N LE 50001 through S/N LE 50017, the requirements of paragraph 1 may be discontinued after the power turbine rotor assembly P/N 4-143-010-01/-02 is replaced with either:
a. Rotor assembly P/N 4-143-010-01/02 with "APOLS93277" etched on rear face of wrenching surface, or
b. Rotor assembly P/N 4-143-010-03, in accordance with Avco Lycoming Service Bulletin No. LTP101-72-0003, Revision 1, dated May 21, 1979, or equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region.
3. For LTS101-600A, -600B, -600A-2, and -650A-2 turboshaft engines, the requirements of Paragraph 1 may be discontinued if the engine installation incorporates a full flow scavenge chip detector, TEDECO P/N A615 or equivalent, installed in accordance with STC SH2929SW or equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region.
4. For all engines affected by this AD, the requirements of Paragraph 1 may be discontinued if the equivalent means of detecting lubrication system contamination, approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region, are effected.
Avco Lycoming Alert Notice, Reference 3V-W714, dated February 16, 1979, and Service Bulletin No. LTP101-72-0003, Revision 1, dated May 21, 1979, refer to this subject. The manufacturer's Alert Notice, Service Bulletin, and Manuals identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Director, Customer Service, Avco Lycoming Division, 550 South Main Street, Stratford, Connecticut 06514. These documents may also be examined at Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, and FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591.
Amendment 39-3440 became effective upon publication in the FEDERAL REGISTER except for recipients of the Emergency AD, dated February 23, 1979, for whom it became effective upon receipt.
Amendment 39-3506 became effective upon publication in the FEDERAL REGISTER.
This Amendment 39-3795 becomes effective June 2, 1980.

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