What was found
(AUS) INCORRECT PISTONS FITTED TO NR 4 AND NR 7 CYLINDERS. THE PISTONS WERE UNDRILLED AND ARE ONLY USED IN NR 5 AND NR 6 CYLINDERS. THE ENGINE HAD BEEN OVERHAULED IN THEUSA. UNAPPROVED PART. (X)
- Difficulty date
- October 24, 2000
- Submitted
- December 7, 2000
- Operation
- General aviation
- Make and model
- Wthrly 620B
- Engine
- Pwa R985AN14B
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Piston
- Part number
- 40698
- Condition
- Wrong Part
- Location
- Engine
- Component
- Engine · Pwa
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.