What was found
HF 1 TRANSMIT AND RECEIVE NORMALLY HF2 UNABLE TO TRANSMIT OR RECEIVE. GROUNDED - YES. REMOVED AND REPLACED #2 HF COUPLER IAW B737-800 AMM 23-11-61/401. VERIFIED #2 HF TRANSMIT AND RECEIVED OK ON GROUND.
- Difficulty date
- November 11, 2021
- Submitted
- November 16, 2021
- Operation
- Air carrier
- Aircraft
- N579AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35187
- Aircraft time
- 53,540 hours, 15,771 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Coupler
- Part number
- 8220987004
- Part serial
- 168867
- Condition
- Failed
- Part time
- 38,985 hours, 11,422 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.