SDR AALA202411251420

Service difficulty report · Switch · Boeing 737823

Difficulty date: November 22, 2024
Submitted: November 25, 2024
Operation: Air carrier
Aircraft: N963AN
Make and model: Boeing 737823
Aircraft serial: 29543
Aircraft time: 67,519 hours, 28,420 cycles
System (JASC): 2210 · Autopilot System
Part: Switch
Condition: Out Of Position
Location: Zone 200
Stage of operation: CL
How discovered: 9
Nature of condition: W
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ON CLIMB OUT WE HAD A SPEED TRIM FAIL LIGHT AND AUTOPILOT A AND B WOULD NOT WORK. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT PHX. DFCS BITE INDICATED - AUTO STAB TRIM CUTOUT. MAINTENANCE VERIFIED AUTO STAB TRIM CUTOUT SWITCH IN CUTOUT POSITION. PLACED AUTO STAB TRIM CUTOUT SWITCH IN THE NORMAL POSITION AND PERFORMED DFCS BITE REF FIM 22-11-00-810-801. AUTOPILOT A SYSTEM OPERTIONAL CHECK NORMAL.