SDR ASAA2020061103789

Service difficulty report · Hf Comm · Boeing 737990ER

Difficulty date: June 10, 2020
Submitted: June 11, 2020
Operation: Air carrier
Aircraft: N494AS
Make and model: Boeing 737990ER
Aircraft serial: 41729
Aircraft time: 16,546 hours, 5,178 cycles
System (JASC): 2310 · HF Communications System
Part: Hf Comm
Condition: Unknown
Location: Nr 1
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

HF1 REPORTED AS WEAK AND UNREADABLE. SELCAL CHECK WORKED. HF2 WORKED GOOD. GROUNDED - YES. ACCOMPLISHED FIM 23-11 TASK 806 INITIAL EVALUATION. HF NR 1 TRANSCEIVER BITE, NO FAULTS. UNABLE TO RECEIVE HF1 OR HF2 ATC DUE TO AIRCRAFT PARKING. MADE SUCCESSFUL TRANSMIT AND RECEIVE, PLANE TO PLANE COMMUNICATION ON HF1 AT 2.000, 6.000 AND 12.000 MHZ AND RECEIVED SATISFACTORY TIME STAMP AT 5.000 AND 10.000 MHZ.