What was found
GND RETURN DUE TO BOTH ATC TRANSPONDERS INOPERATIVE.
- Difficulty date
- January 12, 2014
- Submitted
- January 14, 2014
- Operation
- Air carrier
- Aircraft
- N127UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28813
- Aircraft time
- 57,268 hours, 6,642 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3452 · ATC Transponder System
- Part
- Transponder
- Condition
- Inoperative
- Location
- Cockpit
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.