Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
November 27, 2018
Submitted
November 30, 2018
Operation
Air carrier
Aircraft
N419AS
Make and model
Boeing 737990ER
Aircraft serial
41734
Aircraft time
22,593 hours, 7,423 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
K

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

What was found

HF1 RADIO CONTROL PANEL DISPLAYS "FAIL". GROUNDED - YES. COULD NOT DUPLICATE, TRANSCEIVER BITE CK GOOD, FAIL MESSAGE NO LONGER PRESENT, RECEPTION ON MULTIPLE FREQUENCIES. SYS CKS GOOD PER AMM 23-11-00, GND VERIFICATION SUCCESSFUL.