What was found
NR 1 HF RADIO NOT WORKING, NR 2 HF WEAK, SCRATCHY, BUT READABLE. TRIED FOUR DIFFERENT FREQUENCIES. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 HF ANTENNA COUPLER IAW AMM 23-11-61-400-801, OPS NORMAL IAW AMM 23-11-00-230-801.
- Difficulty date
- August 9, 2018
- Submitted
- August 13, 2018
- Operation
- Air carrier
- Aircraft
- N506AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35690
- Aircraft time
- 38,706 hours, 11,886 cycles
- System (JASC)
- 2397 · Communications System Wiring
- Part
- Coupler
- Part number
- 8220987004
- Part serial
- 173413
- Condition
- Failed
- Location
- Hf Antenna
- Part time
- 27,753 hours, 8,286 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.