- Aircraft configuration prior to reset:
Overspeed Protection Fault identified by FMU/HC/EEC1/2 on PFR with fault code "OSFFMU".
Circuit breakers to reset:None.
Steps to clear warning:Read the FADEC fault codes shown in the FLIGHT DATA and GROUND DATA sections. If you have fault code "OSFFMU" attempt to clear the overspeed protection fault as follow's. All other fault codes trouble shoot iaw TSM.
1. On the 50VU, push the ENG FADEC GRD PWR pushbutton switch and release it again. (Resets FADEC)
2. Push INT mode key on the MCDU and enter a new flight number.
3. Start the engine and run at idle for 4 minutes with engine generator on, then turnoff associated engine generator for 1 minute.
4. Shutdown the engine, and if there are no ECAM/PFR faults, return to service.
5. If fault code OSFFMU continues, repeat above steps, If fault still wont clear, check "B" and "C" contectors (Pins J/H) on FMU. Also check "J5" and "J11" contectors (Pins J/d) at EEC. Check TSM for torque motor resistance valves.
Reset duration:N/A.
Results of power up test or reset:Pass: Return to service.
Fail: Repeat above steps until cleared.
Notes:There is no limit to the number of times you may perform this procedure, and can be performed by the crew after pushback without delaying the flight as long as the ecam message clears.
Sign off:Supplement to TSM73-22-00-810-851.
Applicable deferrals:No MEL.
320 Resets