Service difficulty report · Hf Comm · Boeing 737890

Difficulty date
December 5, 2019
Submitted
December 7, 2019
Operation
Air carrier
Aircraft
N594AS
Make and model
Boeing 737890
Aircraft serial
35191
Aircraft time
44,465 hours, 13,297 cycles
Engine
Cfmint CFM567B27B3
Part
Hf Comm
Condition
Failed
Location
Nr 1
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

HF1 FAIL GROUNDED - YES. PERFORMED B737-800 FIM TASK 23-11-00 HF COMM SYS-BITE PROCEDURE "HF 1 TRANSCEIVER CHECKS GOOD, HF 2 ALSO PASSES BITE TEST.CYCLED HF 1 CB AT P18-2 E11, HF 1 CHECKS GOOD GROUND VERIFICATION SUCCESSFUL.