Service difficulty report · Leg Assy · Bell 206B

Difficulty date
October 31, 2003
Submitted
January 5, 2004
Operation
General aviation
Make and model
Bell 206B
Aircraft time
10,724 hours
Engine
Allsn 250C20B
Part
Leg Assy
Part number
206062101013
Condition
Dented
Location
Engine
Part time
11,003 hours
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

(CAN) DURING ENGINE COMPRESSOR CHANGE (SCHEDULED), 6 ENGINE LEGS WERE SENT OUT TO BE STRIPPED, NDT ED, AND REPAINTED. DURING STRIPPING STAGE IT WAS NOTED THAT P/N 206-062-101-014 HAD A SMALL DENT ON IT (ABOUT 4 =FROM TOP). IT WAS FOUND TO BE BEYOND MFG LIMITATION FOR REPAIR. DENT HAS APPEARANCE OF BEING CAUSED BY MECHANICAL DAMAGE AT SOME POINT IN TIME. DURING NDT INSPECTION OF WAS FOUND TO HAVE A SMALL PIN HOLE ABOUT 2 FROM THE TOP. IT WAS NOTED THAT THERE WERE 2 SMALL MARKS ON EITHER SIDE OF PIN HOLE THAT LOOK LIKE A LOCKWIRE TWIST. IT APPEARS THAT A LOCKWIRE TWIST FROM ENGINE MOUNT HAS CONTACTED THE ENGINE LEG AT SOME POINT IN TIME. THERE IS NO REQUIREMENT FROM MFG TO NDT ENGINE LEGS.

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