Service difficulty report · Circuit Breaker · Boeing 737990ER

Difficulty date
September 19, 2016
Submitted
September 21, 2016
Operation
Air carrier
Aircraft
N459AS
Make and model
Boeing 737990ER
Aircraft serial
36352
Aircraft time
10,108 hours, 3,282 cycles
Part
Circuit Breaker
Condition
Tripped
Location
Autothrottle
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 WILL NOT ENGAGE. ACFT GROUNDED. FOUND CIRCUIT BREAKER AFCS SYS A WARN LIGHT (BAT) OUT. RESET PER AMM 20-60-01. LAND VERIFY PASS GROUP 49, IAW AMM 22-11-00, HGS SYSTEM TEST PASS PER MMS 34-36-00. UPGRADES ACFT TO CAT IIIA AUTOLAND & HGS. LWMP STATUS PLACARD SCREW REMAINS AT CAT IIIA AUTOLAND & HGS.