What was found
INTERPHONES INOPERATIVE AT 4L, 4R AND 5L, 5R. REPLACED NR 3 LAC PER MM .
- Difficulty date
- February 25, 2013
- Submitted
- March 4, 2013
- Operation
- Air carrier
- Aircraft
- N122UA
- Make and model
- Boeing 747422
- Aircraft serial
- 29168
- Aircraft time
- 56,846 hours, 6,643 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2340 · Interphone/Passenger Announcement (PA) System
- Part
- Controller
- Part number
- 1167006144
- Part serial
- L9008001013
- Condition
- Failed
- Location
- Interphone Sys
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.