What was found
ELECTRIC BURN SMELL IN COCKPIT. TURNED OFF LOWER RECIRCULATING FAN PER MEL. SMELL WENT AWAY. *S/D* REPLACED PILOTS SHOULDER HEATER (P/N: 2831-2). NO PROBLEMS AFTER, PROBABLE CAUSE WAS INTERNAL FAILURE.
- Difficulty date
- April 10, 2000
- Submitted
- October 4, 2000
- Operation
- Air carrier
- Aircraft
- N174UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24381
- Aircraft time
- 42,061 hours, 4,537 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2140 · Heating System
- Part
- Heater
- Part number
- 28312
- Condition
- Failed
- Location
- Cockpit
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- H
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.