AD 73-05-01

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AD Number:
73-05-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
AVCO LYCOMING Model VO-540, IVO-540, TVO-540, TIVO-540 Series Engines
Subject:
Connecting Rod Bearing Assemblies
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/09/1974
Make:
Lycoming Engines
Model:
IVO-540-A1A | TIVO-540-A2A | TVO-540-A1A | VO-540-A1A | VO-540-A2A | VO-540-B1A | VO-540-B1B | VO-54...Show more
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Superseded AD: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Superseded By: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:
This AD also supersedes 64-08-03.
AIRWORTHINESS DIRECTIVES FINAL RULES: 73-05-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1889

AD NUMBER:   73-05-01

SUBJECT HEADING:   AVCO LYCOMING Model VO-540, IVO-540, TVO-540, TIVO-540 Series Engines

ACTION:  

SUMMARY:  

DATES:   Effective July 9, 1974.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   73-05-01 AVCO LYCOMING: Amendment 39-1595 as amended by Amendment 39-1843 is further amended by Amendment 39-1889. Applies to VO-540 Series engines beginning with S/N 101-43 thru 2299-43, IVO-540 series engines beginning with S/N 101-60 thru 150-60, TVO-540 Series engines beginning with S/N 101-53 thru 103-53 and TIVO-540 Series engines beginning with S/N 101-57 thru 163-57 and all similar series engines overhauled (also known as remanufactured) by Lycoming before January 2, 1974 except the following Serial Numbers: RL-376-43, RL-483-43, RL-693-43, RL-695-43, RL-1091-43, RL-1205-43, RL-1429-43, RL- 1753-43, RL-1960-43, RL-2017-43, RL-2032-43, RL-2125-43, RL-2139-43, RL-2244-43, RL-2245-43 and RL-2275-43.

Compliance required as indicated after the effective date of this AD, unless already accomplished or unless higher crush bearing P/N LW13212 has been installed in accordance with Lycoming Service Bulletins No. 303E or 303F.

To prevent failures of P/N 71947, P/N 73174, P/N 75548 and P/N LW10776 connecting rod assemblies and P/N 77450 connecting rod assembly with P/N 75547 connecting rod bearing installed in accordance with Lycoming Service Bulletins No. 303B, 303C or 303D, accomplish the following:

a. Engines with connecting rod assemblies that have accumulated 400 hours or more in service since new or overhaul must have the connecting rod assemblies replaced with new connecting rod assembly, P/N LW13422 and new connecting rod bearing P/N LW13212, within the next 50 hours in service.

b. Engines that have connecting rod assemblies with less than 400 hours in service must have the connecting rod assemblies replaced with new connecting rod assembly, P/N LW13422 and new connecting rod bearing, P/N LW13212 prior to 450 hours in service.

c. Engines that have been modified in accordance with Lycoming Service Bulletins No. 303B, 303C or 303D must comply with items (a) or (b) above, except that the P/N 77450 connecting rod, free of any galling may be reused with P/N LW12596 connecting rod bolts and identified as assembly number LW13422.

NOTE: Lycoming Service Bulletin No. 371A applies to this subject.

Amendment 39-1595 superseded AD 65-13-07 and became effective February 28, 1973.

Amendment 39-1843 was effective May 17, 1974.

This Amendment 39-1889 is effective July 9, 1974.

FOOTER: