SDR ASAA1159587

Service difficulty report · Autothrottle Sys · Boeing 737890

Difficulty date: May 2, 2011
Submitted: May 5, 2011
Operation: Air carrier
Aircraft: N584AS
Make and model: Boeing 737890
Aircraft serial: 35682
Aircraft time: 13,980 hours, 4,230 cycles
System (JASC): 2230 · Auto Throttle System
Part: Autothrottle Sys
Condition: Malfunctioned
Location: Cockpit
Stage of operation: DE
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

AUTOTHROTTLES ADDED POWER WHEN THEY SHOULD HAVE BEEN AT IDLE . THIS OCCURRED IN A VERTICAL SPEED DESCENT AND IN VNAV PATH. PERFORMED AUTOTHROTTLE OPS TEST PER M/M 22 31 00 710 801. NO FAULTS FOUND. NO HISTORY LAST 30 DAYS. OK FOR SERVICE.