What was found
HF NR 1 SHOWS FAIL, WILL SHOW FREQS WHEN FLIP FLOP FROM ACTIVE TO STBY THEN AFTER ABOUT 7 SECONDS REVERTS TO FAIL TRANSMITS AND RECEIVES OKAY. GROUNDED - YES. NO HISTORY 90 DAYS PERFORMED FIM 23-11 TASK 801 TEST PASS.
- Difficulty date
- January 20, 2017
- Submitted
- January 23, 2017
- Operation
- Air carrier
- Aircraft
- N457AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36355
- Aircraft time
- 11,756 hours, 3,876 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Hf Comm
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.