Service difficulty report · Transceiver · Boeing 737990ER

Difficulty date
August 14, 2020
Submitted
August 17, 2020
Operation
Air carrier
Aircraft
N492AS
Make and model
Boeing 737990ER
Aircraft serial
44110
Aircraft time
18,176 hours, 5,848 cycles
Engine
Cfmint CFM567B27E
Part
Transceiver
Part number
8220990004
Part serial
4GKHRP
Condition
Failed
Location
Nr 1 Hf
Part time
2,893 hours, 840 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

HF 1 FAIL, GROUNDED YES. REF B737-900 FIM 23-11 TASK 801, 23-11 TASK 806, B737-900 AMM 23-11-21. HF-1 FAIL DISPLAYS ON BOTH RTP'S. HF NR 1 XCVR BITE PASSES. DUE TO HISTORY. REMOVED AND REPLACED HF-1 XCVR, IAW B737-900 AMM 23-11-21/401.