SDR ASAA2014061308181

Service difficulty report · Hsi · Boeing 737890

Difficulty date: June 13, 2014
Submitted: June 16, 2014
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 27,194 hours, 8,295 cycles
System (JASC): 3420 · Attitude and Direction Data System
Part: Hsi
Condition: Faulted
Location: Cockpit
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

FORWARD FLAG ON CAPTAIN`S EHSI. ACFT GROUNDED. ACCOMPLISHED FIM 22-11, TASK 801, DFCS BITE, FFR SHOWS FOUR GROUND FAULTS ON 6-13-2014. MSG 22-11309, SPD TRIM WARN CH-A, MSG 22-11315 MTS WARN CH-A, MSG NR 22-11191, MT CMD MON CH-A, AND 4 MSG 22-11303, FCC-A INTERNAL FAULT. ACCOMPLISHED GROUND VERIFICATION TEST OF DFCS LAND VERIFY TESTS, GP49, REF AMM 22-11-00/201 AND HGS SYS TEST REF SMM 34-36-00, OPS CHECK NORMAL.