Service difficulty report · Transceiver · Boeing 777222

Difficulty date
December 11, 2018
Submitted
December 14, 2018
Operation
Air carrier
Aircraft
N775UA
Make and model
Boeing 777222
Aircraft serial
26947
Aircraft time
92,871 hours, 16,036 cycles
Part
Transceiver
Part number
8220330001
Part serial
2340
Condition
Malfunctioned
Location
Hf System
Part time
705,108 hours, 700,576 cycles
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

L AND R HF FAILURE T/S LEFT AND RIGHT HF SYS. FOUND BOTH TUNING PANELS TURN TO DASHES AFTER ATTEMPTING TO TUNE RADIO. REPLACED LEFT HF TXRX. OPS CHECK GOOD. REPLACED RIGHT TXRX. NO DASHES ON TUNING PANEL BUT STILL WOULD NOT CHANNELIZE. OPENED NEW LOG PAGE FOR RH HF. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1270793 SN OFF 0138 TT # 1224263 SN OFF 2340 IPC REFERENCE # 23-11-05 IPC REFERENCE # 23-11-05 TRANSCEIVER, HF OFF 27-2317-9-0001 0870 ON 27-2317-9-0001 0138 TRANSCEIVER, HF OFF 27-2317-9-0001 0161 ON 27-2317-9-0001 2340