SDR MALA030345

Service difficulty report · Autopilot Sys

Difficulty date: July 23, 2003
Submitted: July 25, 2003
Operation: Air carrier
System (JASC): 2210 · Autopilot System
Part: Autopilot Sys
Condition: Malfunctioned
Location: Cockpit
Stage of operation: CR
How discovered: O
Nature of condition: F
Precautionary procedure: A

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

What was found

INFLIGHT ON FLIGHT NR 3114, AT 15000 FT AN ELEV MISTRIM NOTICED, DISCONNECTED AUTOPILOT TO RETRIM AND FOUND MAIN ELEVATOR PITCH TRIM HAD FAILED, STANDBY WORKS NORMALLY. AIR RETURN TO MSP. MAINTENANCE COMPLETED OPERATIONAL TEST OF ELEVATOR TRIM SYSTEM PER SAAB AMM 27-32-30. ALSO AUTO PILOT SYSTEM, COULD NOT DUPLICATE TRIM FAULT. NO HISTORY AND OPS CHECK GOOD AT THIS TIME.