SDR ASAA2018052824845

Service difficulty report · Hf Comm · Boeing 737890

Difficulty date: May 28, 2018
Submitted: May 30, 2018
Operation: Air carrier
Aircraft: N535AS
Make and model: Boeing 737890
Aircraft serial: 35200
Aircraft time: 28,913 hours, 8,435 cycles
System (JASC): 2310 · HF Communications System
Part: Hf Comm
Condition: Malfunctioned
Location: Cockpit
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

PILOT REPORTS HF-2 "FAIL" INDICATED IN ACTIVE & STBY FREQ WINDOWS OF RTP. GROUNDED - YES. CONFIRMED "FAIL" INDICATED IN RTP FREQ WINDOWS. RMVD & RESET POWER TO HF-2 SYST BY PULLING, THEN RESETTING HF-2 C/B. "FAIL" INDICATION EXTINGUISHED IN RTP REPLACED BY HF-2 CONTROL FREQS. ESTABLISHED RECEIVE & XMIT AUDIO CONTACT W/ GROUND HF OPERATOR ALL PER FIM 23-11 TASK 806. ETOPS SIGNIFICANT SYSTEM - GND VERIFICATION SUCCESSFUL.