Service difficulty report · Autothrottle Sys · Boeing 737990ER

Difficulty date
October 23, 2017
Submitted
October 24, 2017
Operation
Air carrier
Aircraft
N402AS
Make and model
Boeing 737990ER
Aircraft serial
41189
Aircraft time
19,827 hours, 6,508 cycles
Part
Autothrottle Sys
Condition
Malfunctioned
Stage of operation
NR
How discovered
9
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

AUTOTHROTTLE CIRCUIT BREAKER TRIPPED. ACFT GROUNDED. CLOSED THE CIRCUIT BREAKER IAW AMM 20-60-01. ACCOMPLISHED AN AUTOTHROTTLE BITE CHECK. NO FAULTS IAW AMM 22-31-00. ACCOMPLISHED SERVO MOTOR TEST, NO FAULTS NOTED.