SDR ASAA2019021628202

Service difficulty report · Hf Comm · Boeing 737900ER

Difficulty date: February 16, 2019
Submitted: February 20, 2019
Operation: Air carrier
Aircraft: N403AS
Make and model: Boeing 737900ER
Aircraft serial: 41730
Aircraft time: 25,036 hours, 8,240 cycles
System (JASC): 2310 · HF Communications System
Part: Hf Comm
Condition: Malfunctioned
Location: Cockpit
Stage of operation: NR
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 COMMUNICATION POOR, ACARS FUNCTIONED NORMALLY, CPDLC NOT RECEIVING THROUGH HF RADIO. GROUNDED - YES. RESET SYSTEM, PERFORMED PLANE TO PLANE HF CHECK WITH NR 1 AND NR 2, OPS CHECK GOOD. REF AMM 23-11-00-730-801. SUSPECT ATMOSPHERIC CONDITIONS WERE A FACTOR.

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