SDR ASAA2017101422197

Service difficulty report · Throttle · Boeing 737990ER

Difficulty date: October 14, 2017
Submitted: October 16, 2017
Operation: Air carrier
Aircraft: N492AS
Make and model: Boeing 737990ER
Aircraft serial: 44110
Aircraft time: 7,448 hours, 2,540 cycles
System (JASC): 2230 · Auto Throttle System
Part: Throttle
Condition: Sticking
Location: Left
Stage of operation: NR
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

AUTOTHROTTLE DISENGAGED, IT APPEARS RIGHT THROTTLE MOVES, LEFT STICKS DOES NOT MOVE, CAUSING THE THROTTLE TO SPLIT AND DISENGAGE. ACFT GROUNDED. ACCCOMPLISHED AUTOTHROTTLE SYSTEM TEST, THE SERVO MOTOR TEST PASSED WITH NO FAULTS IAW AMM 22-31-00-710-802. PERFORMED AUTOTHROTTLE SYSTEM OPS TEST IAWAMM 22-31-00-710-801, OPS NORMAL. NO OTHER HISTORY 60 DAYS. T