What was found
HF 1 + 2 FUNCTIONAL TEST FAIL. GROUNDED - YES. REPLACED HF COUPLER #1 AND 2 REF B737-800 AMM 23-11-61. ACCOMPLISHED HF COMMUNICATION OPERATIONAL TEST. OPS CK GOOD REF AMM 23-11-00.
- Difficulty date
- May 18, 2021
- Submitted
- June 2, 2021
- Operation
- Air carrier
- Aircraft
- N585AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35683
- Aircraft time
- 50,513 hours, 15,128 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Coupler
- Part number
- 8220987004
- Part serial
- 168888
- Condition
- Faulted
- Location
- Vertical Stab
- Part time
- 41,397 hours, 12,369 cycles
- 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.