Service difficulty report · Transceiver · Boeing 737990ER

Difficulty date
August 27, 2019
Submitted
August 29, 2019
Operation
Air carrier
Aircraft
N486AS
Make and model
Boeing 737990ER
Aircraft serial
44107
Aircraft time
15,766 hours, 5,128 cycles
Part
Transceiver
Part number
8220990004
Part serial
47047V
Condition
Failed
Location
Hf Comms
Part time
15,772 hours, 5,131 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 2 HF SHOWING FAIL. GROUNDED - YES. VERIFIED FAULT, LRU FAILED BITE. REMOVED & REPLACED HF-2 TRANSCEIVER REF B737-900 AMM 23-11-21-400-801, INSTALLATION & GROUND VERIFICATION TEST PASSED.