Service difficulty report · Circuit Breaker · Boeing 737890

Difficulty date
August 19, 2018
Submitted
August 21, 2018
Operation
Air carrier
Aircraft
N517AS
Make and model
Boeing 737890
Aircraft serial
35197
Aircraft time
37,337 hours, 11,046 cycles
Part
Circuit Breaker
Condition
Tripped
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

CAPTAIN`S FD AMBER LIGHT ILLUMINATED. ACFT GROUNDED. ALSO NOTED FD AMBER LIGHT ON THE FIRST OFFICER`S PFD. FOUND AFCS SYS A WARNING LIGHT (BAT) CIRCUIT BREAKER OUT AND AFCS SYS B ENGAGE INTLK CIRCUIT BREAKER OUT. UTILIZED CIRCUIT BREAKER RESET PROCEDURE FOR BOTH IAW AMM 20-60-01. ATTEMPTED DFCS BITE TEST BUT CHANNEL A NOT AVAILABLE, WON'T TEST. PULLED, RESET FOUR AFCS SYS A CIRCUIT BREAKERS TO RESET POWER TO SYSTEM. FD LIGHTS ON BOTH PFDS EXTINGUISHED AND DFCS BITE TEST OF BOTH CHANNELS A & B OPS NORMAL IAW AMM 22-11-00. ALL CIRCUIT BRAKERSS REMAIN RESET.