SDR ASAA2018041324243

Service difficulty report · Hf Comm · Boeing 737890

Difficulty date: April 13, 2018
Submitted: April 16, 2018
Operation: Air carrier
Aircraft: N592AS
Make and model: Boeing 737890
Aircraft serial: 35190
Aircraft time: 39,225 hours, 11,940 cycles
System (JASC): 2310 · HF Communications System
Part: Hf Comm
Condition: Malfunctioned
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

DURING FLIGHT, UNABLE TO MAKE HF CONTACT ON ALL FREQUENCIES. ACFT GROUNDED. ACCOMPLISHED HF COMMUNICATION SYSTEM R/T PROBLEM FAULT ISOLATION IAW FIM 23-11 TASK 806, AND AMM 23-11-21-740-008. BOTH NR 1 AND 2 HF RADIO OPS CHECKED NORMAL. CONTACTED CENTER, BOTH VOICE AND ARINC TRANSMISSION, RECEPTION NORMAL.