Service difficulty report · Transceiver · Boeing 737990ER

Difficulty date
August 3, 2022
Submitted
August 4, 2022
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
26,564 hours, 8,334 cycles
Part
Transceiver
Part number
8220990004
Part serial
45M3TM
Condition
Inoperative
Location
E/E Rack E6
Part time
26,564 hours, 8,334 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.

What was found

#1 HF RADIO FAIL. GROUNDED - YES. PERFORMED HF BITE PER B737-900 FIM TASK 23-11-00-810-801, #1 HF TRANSCEIVER WILL NOT TEST. REMOVED AND REPLACED #1 TRANSCEIVER PER B737-900 AMM 23-11-21, OPS CHECK GOOD PER REFERENCE.