What was found
DURING OPERATIONAL TEST OF HF COUPLERS, THE NR 1 HF INTERMITTENTLY FAILED. ACFT GROUNDED. COULD NOT DUPLICATE FAILURE. CONTACTED ON 10.057, WAS RECEIVED 5 X 5 ON BOTH HF 1 & 2. TRANSCEIVER BITE SHOWED NO FAULTS.
- Difficulty date
- November 4, 2017
- Submitted
- November 6, 2017
- Operation
- Air carrier
- Aircraft
- N583AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35681
- Aircraft time
- 39,240 hours, 11,609 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Coupler
- Condition
- Intermittent
- Location
- Hf Comms
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.