What was found
NR 1 HF RADIO DISPLAYS "FAIL" WHEN SELECTED. GROUNDED - YES. BITE OF NR 1 TRANSCEIVER SHOWS RED LRU FAULT LIGHT. REPLACED NR 1 HF TRANSCEIVER REF AMM 23-11-21-400-801. GROUND VERIFICATION TEST NORMAL.
- Difficulty date
- March 6, 2019
- Submitted
- March 8, 2019
- Operation
- Air carrier
- Aircraft
- N536AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35203
- Aircraft time
- 27,729 hours, 7,997 cycles
- System (JASC)
- 2310 · HF Communications System
- Part
- Transceiver
- Part number
- 8220990004
- Part serial
- 18RYPC
- Condition
- Failed
- Location
- Hf Comm
- Part time
- 9 hours, 3 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.