What was found
PERFORM FUNCTIONAL CHECK, FOUND O-RING ON DIFFERENTIAL VALVE FAILED, CAUSING INTERNAL FLUID BYPASS. REPLACED O-RING.
- Difficulty date
- May 7, 2012
- Submitted
- May 10, 2012
- Operation
- Air carrier
- Aircraft
- N577AL
- Make and model
- Bell 407
- Aircraft serial
- 53247
- Aircraft time
- 14,235 hours
- System (JASC)
- 6720 · Tail Rotor Control System
- Part
- O-Ring
- Part number
- MS28775012
- Condition
- Leaking
- Location
- T/R Servo
- Component
- Servo · Bell
- Component part number
- 206076062105
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.