What was found
DOOR 4R EMERGENCY SIGNAL HORN SOUND IS WEAK. [SUP 5-1-07] REPLACED EMERGENCY EVACUATION SIGNAL PANEL ASSEMBLY, OP CHECKED OK
- Difficulty date
- April 3, 2007
- Submitted
- April 10, 2007
- Operation
- Air carrier
- Aircraft
- N187UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26877
- Aircraft time
- 57,516 hours, 6,923 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 5270 · Door Warning System
- Part
- Control Panel
- Condition
- Malfunctioned
- Location
- Door 4r
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.