What was found
BOTH TRANSPONDERS FAILED AFTER TAKEOFF. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED TRANSPONDER CONTROL PANEL AND ATC INTERLOCK RELAY R20-9, OPERATIONAL CHECK NORMAL.
- Difficulty date
- February 10, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N965N
- Make and model
- Doug DC931
- Aircraft serial
- 47417
- System (JASC)
- 3452 · ATC Transponder System
- Part
- Transponder
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- CL
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.