What was found
LOUD WHINING NOISE COMING FROM ABOVE AND AFT OF THE REAR FORWARD FACING SEATS. IT OCCURRED DURING A CLIMB AT MCP AND 60 KNOTS. AFTER TURNING AROUND AND LOWERING POWER TO RETURN TO BASE, THE NOISE SUBSIDED. REPLACED TR SERVO, RTS.
- Difficulty date
- June 21, 2024
- Submitted
- June 25, 2024
- Operation
- Air carrier
- Aircraft
- N911AL
- Make and model
- Bell 407
- Aircraft serial
- 53144
- Aircraft time
- 12,017 hours, 37,021 cycles
- Engine
- Allsn 250C47B
- Engine time
- 4,339 hours, 10,175 cycles
- System (JASC)
- 6500 · Tail Rotor Drive System
- Part
- Servo
- Part number
- 206076062125
- Part serial
- R1871
- Condition
- Noise
- Location
- Tail Rotor
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.