What was found
WHEN PERFORMING OIL CHANGE OF TAIL ROTOR GEARBOX, FOUND OIL REMAINING IN GEARBOX TO ONLY MEASURE APPROX 1 OZ. FLUID LOSS APPEARED TO ORIGINATE FROM TAIL ROTOR PITCH CHANGE CONTROL ROD SEAL.
- Difficulty date
- September 23, 2015
- Submitted
- October 1, 2015
- Operation
- Air carrier
- Aircraft
- N499AE
- Make and model
- Bell 407
- Aircraft serial
- 53367
- Aircraft time
- 6,432 hours, 20,433 cycles
- Engine
- Allsn 250C47B
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Gearbox
- Part number
- 406040400121FM
- Part serial
- A1160
- Condition
- Unserviceable
- Location
- Tail Rotor
- Part time
- 7,224 hours
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.