SDR MALA070174

Service difficulty report · Relay · Saab 340B

Difficulty date
October 10, 2007
Submitted
November 1, 2007
Operation
Air carrier
Aircraft
N407XJ
Make and model
Saab 340B
Aircraft serial
340B407
Aircraft time
25,138 hours, 27,261 cycles
Part
Relay
Condition
Unknown
Location
Autopilot
Stage of operation
CR
How discovered
9
Nature of condition
F
Precautionary procedure
O

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

What was found

L ROLL INDICATION TRAVELED FULL UP ON ITS OWN. ALL CAUTION LIGHT CAME UP. AUTOPILOT WAS ON. RETRIMMED THE L AILERON. REPLACED AUTOPILOT TRIM SERVO RELAYS, FLIGHT CONTROL COMPUTER, AILERON TRIM ACTUATOR, TRIM CONTROL PANEL. REF CONT CARD FOR DETAILS. NR 1 CHANGE AUTO TRIM RELAYS FOR PRECAUTIONARY MEASURES. REMOVED AND REPLACED RELAYS 13FD, 14FD, 15 FD, 16 FD, 14 CC, 22 CC, 24CC IAW SF340 MM CH 22-10. NR 2 CHANGE AILERON TRIM ACTUATOR FOR PRECAUTIONARY MEASURES. REF SAAB AMM CH 27-12-10-12. NR 3 FOR PRECAUTION REPLACE THE FCC. REMOVED AND REPLACED FLT CONTROL COMPUTER PN 622-7491-210, SN ON 2382, SN OFF 2367. OPS CHECK GOOD IAW SF340 MM CH 34-22-05. NR 4 CHANGE TRIM CONTROL PANEL ASSY FOR PRECAUTIONARY MEASURES. REPLACED TRIM CONTROL PANEL ASSY REF SAAB AMM CH 27-12-05.

More about the Saab 340B