What was found
UNABLE TO RECEIVE RECEPTION VOLUME OR SIDE TONE ON HF 1 ON ANY FREQUENCY. HF 2 WORKS NORMALLY. ACFT GROUNDED. R & R THE NR 1 & 2 HF COUPLER IAW AMM 23-11-61-000-801, & AMM 23-11-61-400-801. OPS CHECKED OK.
- Difficulty date
- September 8, 2017
- Submitted
- September 11, 2017
- Operation
- Air carrier
- Aircraft
- N530AS
- Make and model
- Boeing 737890
- Aircraft serial
- 36578
- Aircraft time
- 28,958 hours, 8,636 cycles
- System (JASC)
- 2397 · Communications System Wiring
- Part
- Coupler
- Part number
- 8220987004
- Part serial
- 157936
- Condition
- Failed
- Location
- Hf Comms Sys
- Part time
- 18,175 hours, 5,408 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.