Service difficulty report · Adapter · Boeing 234

Difficulty date
June 8, 2005
Submitted
June 23, 2005
Operation
General aviation
Aircraft
N242CH
Make and model
Boeing 234
Aircraft serial
MJ023
Engine
Lyc AL5512
Part
Adapter
Part number
414D32101
Part serial
TS538
Condition
Cracked
Location
Engine
Part time
4,955 hours
Stage of operation
NR
How discovered
D
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING OVERHAUL OF ENGINE AWN ADAPTER, NDT FOUND .450 INCH TOTAL LENGTH CRACK IN THE BOLT HOLE OF LUG NR 1. IN THE BORE OF LUG, CRACK LENGTH IS .300 OF INCH AND ACROSS FACE OF LUG, THE CRACK LENGTH IS .150 OF INCH. ILLUSTRATION DEPICTS LOCATION AND SCHEMATIC OF CRACK FOUND. FIRST TIME CRACK OF THIS NATURE NOTED ON THIS ADAPTER. CHECKED OTHER ADAPTERS MFG UNDER THIS LOT NR. THIS REVIEW CONCLUDED THAT THE CRACKED ADAPTER IS AN ISOLATED INCIDENT AND NOT RELATED TO MATERIAL DEFICIENCIES. (K)

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