SDR ASAA0852535

Service difficulty report · Radio · Boeing 737890

Difficulty date: February 2, 2008
Submitted: February 4, 2008
Operation: Air carrier
Aircraft: N558AS
Make and model: Boeing 737890
Aircraft serial: 35177
Aircraft time: 6,036 hours, 1,716 cycles
System (JASC): 2310 · HF Communications System
Part: Radio
Condition: Malfunctioned
Location: Nr 1 Hf
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

NR 1 HF RADIO GARBLED. SELCAL CHIME AND LIGHT OK. FREQ 6673 & 3452 ATTEMPTED IN FLIGHT. HF NR 2 VOICE AND SELCAL OK. UNABLE TO VERIFY DISCREPANCY. REPLACED AND TESTED NR 1 HF ANTENNA COUPLER IAW 23 11 61 PGS 401 409. NO DISCREPANCIES NOTED.