SDR ASAA0954376

Service difficulty report · Hf Comm · Boeing 737890

Difficulty date: February 7, 2009
Submitted: February 10, 2009
Operation: Air carrier
Aircraft: N557AS
Make and model: Boeing 737890
Aircraft serial: 35176
Aircraft time: 10,259 hours, 3,007 cycles
System (JASC): 2310 · HF Communications System
Part: Hf Comm
Condition: Intermittent
Location: Cockpit
Stage of operation: IN
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

HF 1 RADIO WORKS INTERMITTENTLY (VOICE COMM). VERBAL FROM CREW NR 1 HF INTERMITTENT IN TRANSMIT ONLY. RECEIVE AND DATA FUNCTION WAS NORMAL. GROUNDED YES. UNABLE TO DUPLICATE. ACCOMPLISHED FIM 23 11 00 810 806 AND 23 11 00 810 801 BITE TEST AND CONTACTED SFO RADIO STATION. OPS CHECK NORMAL. VERIFICATION FLIGHT SUCCESSFUL.