What was found
DURING REPAIR FOR LEAKING OUTPUT SEAL, FOUND SPLINES ON OUTPUT SHAFT WORN BELOW LIMITS, READING 1.3025, MIN 1.3035 (SHAFT SPLINES SOFTER METAL THAN TRUNNION SPLINES.)
- Difficulty date
- March 2, 2002
- Submitted
- April 16, 2002
- Operation
- Air carrier
- Aircraft
- N687AL
- Make and model
- Bell 407
- Aircraft serial
- 53366
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Shaft
- Part number
- 407040416101
- Part serial
- A161
- Condition
- Worn
- Location
- T/R Gearbox
- Part time
- 1,247 hours
- 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.