What was found
HF1 INDICATES "FAIL" ON COMM DISPLAY PANEL. GROUNDED - YES. PERFORMED HF1 COMM SYSTEM BITE PROCEDURES REF B737-900 FIM 23-11 TASK 801, OPS CHECK TEST GOOD. NO HISTORY FOR THE LAST 30 DAYS.
- Difficulty date
- August 14, 2021
- Submitted
- August 17, 2021
- Operation
- Air carrier
- Aircraft
- N474AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40715
- Aircraft time
- 23,028 hours, 7,307 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Warning Message
- Condition
- False Activation
- Location
- Nr 1 Hf Comms
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.