SDR ASAA1057353

Service difficulty report · Hf Comm · Boeing 737890

Difficulty date: February 7, 2010
Submitted: February 10, 2010
Operation: Air carrier
Aircraft: N586AS
Make and model: Boeing 737890
Aircraft serial: 35189
Aircraft time: 8,842 hours, 2,927 cycles
System (JASC): 2310 · HF Communications System
Part: Hf Comm
Condition: Malfunctioned
Location: Cockpit
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

PER REQUEST FROM SEAMC (ETOPS) FUNCTIONAL TEST OF HF1 AND HF2 RADIOS UNSUCCESSFUL ON GROUND (SEA) AND IN FLIGHT. TRIED BOTH FREQ'S PROVIDED BY SFO RADIO. ACCOMPLISHED SYSTEM TEST OF NR 1 AND NR 2 HF COMMUNICATION SYSTEM REF 23 11 00 CONTACTED SFO RADIO GROUND TEST NORMAL. SEAMC NOTIFIED. ON FVR DEFERRAL. PERFORMED FUNCTIONAL HF FLIGHT CHECK RECEIVED AND TRANSMITTED ON BOTH HF FRQUENCIES. OPS NORMAL.