What was found
EXCESSIVE CORROSION PITTING IN SPLINES OF COUPLING AFTER 63.7 HOURS. IMPROPER HEAT TREATMENT COULD HAVE BEEN A FACTOR IN THE MALFUNCTION. OPER CONTROL NR OHI 2011.
- Difficulty date
- February 2, 1995
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N911LW
- Make and model
- Bell 222U
- Aircraft serial
- 47520
- System (JASC)
- 6310 · Engine/Transmission Coupling
- Part
- Coupling
- Part number
- 222044672101
- Condition
- Corroded
- Location
- Main Drive
- Part time
- 4,273 hours
- Stage of operation
- IN
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.