Service difficulty report · Hf Comm · Boeing 737890

Difficulty date
August 24, 2013
Submitted
August 26, 2013
Operation
Air carrier
Aircraft
N534AS
Make and model
Boeing 737890
Aircraft serial
35202
Aircraft time
10,570 hours, 3,153 cycles
Part
Hf Comm
Condition
Malfunctioned
Location
Nr 1
Stage of operation
TX
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

UNABLE TO HEAR ON HF NR 1 ON ANY FREQS. HF NR 2 ONLY USABLE IF HF NR 1 SELECT SWITCH IN SAT POSITION. BOTH HF NR 1 (P-13) & HF NR 2 (P-6) CIRCUIT BREAKERS WERE IN. ACFT GROUNDED. FIM TASK 23-11-TASK 801 HF SYS BITE PROC. ALL TEST PASSED. PERF. HF SYS OPS TEST IAW AMM 23-11-00. NR 1 & NR 2 HF SYS BOTH PASSED. GROUND VERIFICATION TEST SUCCESSFUL.