What was found
LEFT HF CAN BE TUNED AND RECEIVED BUT ONLY TUNING SQUEAL HEARD WHEN ATTEMPTED. MAINT MESSAGE 23-51010 LEFT COUPLER HAS INTERNAL FAULT. REPLACED COUPLER. GROUND CHECKED OK.
- Difficulty date
- July 29, 2009
- Submitted
- July 29, 2009
- Operation
- Air carrier
- Aircraft
- N769UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26921
- Aircraft time
- 56,496 hours, 10,515 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 2310 · HF Communications System
- Part
- Coupler
- Part number
- 490S1
- Part serial
- 380
- Condition
- Faulty
- Location
- Hf Comm
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.