What was found
AIRCRAFT RETURNED DUE TO A LOUD HUM AND VIBRATION IN THE FORWARD PASSENGER CABIN. *S/D* EQUIPMENT COOLING OVERBOARD EXHAUST VALVE FAILED CAUSING VIBRATION DURING CLIMB. SHOP FOUND DAMPER BROKEN.
- Difficulty date
- September 6, 1998
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N527UA
- Make and model
- Boeing 757222
- Aircraft serial
- 24995
- Engine
- Pwa PW2037
- System (JASC)
- 2120 · Air Distribution System
- Part
- Valve
- Condition
- Failed
- Location
- E/E Compt
- Stage of operation
- NR
- Nature of condition
- E
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.