What was found
THE "HEAT L TAT" DISPLAYED. RTFL. *S/D* REPLACED LT TAT PROBE. REPLACED TAT SENSOR. REPLACED GROUND SAFETY RELAY R7334, ALTN NLG SQUAT RELAY R854, LT TAT PWR RELAY & LT TAT CURRENT SENSING RELAY R7429.
- Difficulty date
- September 8, 2008
- Submitted
- January 16, 2009
- Operation
- Air carrier
- Aircraft
- N127UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28813
- Aircraft time
- 36,794 hours, 4,422 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3412 · Outside Air Temperature Indicator/Sensor
- Part
- Probe
- Condition
- Failed
- Location
- Tat
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.