Service difficulty report · Warning Message · Boeing 737890

Difficulty date
June 26, 2019
Submitted
June 27, 2019
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
46,338 hours, 13,814 cycles
Part
Warning Message
Condition
False Activation
Location
Nr 1 Hf Comms
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

HF NR 1 SHOWS "FAIL" INDICATION. GROUNDED - YES. PERFORMED BITE CHECK ON NR 1 HF AND FOUND NO FAULTS, FAIL INDICATION WENT AWAY AND OPS CHECK GOOD B737-800 AMM/FIM 23-11 TASK 801 GROUND VERIFICATION SUCCESSFUL.