What was found
LEFT HF RADIO INOP. GROUND TEST LT HF SYS PASSED, BUT NO RESPOND TUNE SOUND, RT HF SYS TEST FAIL. RESET C/B AND TRANSCEIVER, NO HELP. NEED FURTHER TROUBLESHOOTING. REPLACED RT HF COUPLER, OPS CHECKS NORMAL.
- Difficulty date
- August 29, 2009
- Submitted
- September 4, 2009
- Operation
- Air carrier
- Aircraft
- N221UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30552
- Aircraft time
- 33,421 hours, 4,261 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 2310 · HF Communications System
- Part
- Coupler
- Part number
- 490S1
- Part serial
- 7TWD
- Condition
- Damaged
- Location
- Hf System
- 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.