SDR ASAA1057412

Service difficulty report · Autothrottle Sys · Boeing 737890

Difficulty date: February 17, 2010
Submitted: February 22, 2010
Operation: Air carrier
Aircraft: N586AS
Make and model: Boeing 737890
Aircraft serial: 35189
Aircraft time: 8,933 hours, 2,953 cycles
System (JASC): 2230 · Auto Throttle System
Part: Autothrottle Sys
Condition: Malfunctioned
Location: Cockpit
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

AUTO THROTTLE INOP WILL NOT ENGAGE. FOUND FAULT CODE 22 31501, PERFORMED FIM 22 31TASK 805. ALL GROUND VERIFICATION TEST PASS. NO HISTORY PASS 30 DAYS. BITE TEST GROUP NR 35 HGS SENSOR TEST FCC/AT TEST PASS. REF MM 22 11 33. SMM 34 36 00.