- Difficulty date
- January 13, 2011
- Submitted
- January 20, 2011
- Operation
- Air carrier
- Aircraft
- N173UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24380
- Aircraft time
- 81,038 hours, 9,203 cycles
- Engine
- Pwa PW4056
- Part
- Lamp
- Part number
- 78671
- Condition
- Inoperative
- Location
- Emergency Light
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT AT 33 LEFT INOPERATIVE. REPLACED LAMP ASSY.