Service difficulty report · Ecu · Saab 340B

Difficulty date
June 2, 2021
Submitted
July 27, 2021
Operation
Air carrier
Aircraft
N9CJ
Make and model
Saab 340B
Aircraft serial
340B224
Aircraft time
37,928 hours, 42,237 cycles
Engine
Ge CT79B
Engine time
33,426 hours, 38,465 cycles
Part
Ecu
Part number
6071T20P16
Part serial
ECDT1658
Condition
Failed
Location
Nr 1 Engine
Stage of operation
AP
How discovered
O
Nature of condition
X, J
Precautionary procedure
E

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

What was found

ENG1 ON APPROACH FLAME OUT. PROCEEDED BY QRH - AFTER TROUBLESHOOTING, 5 TRIPS TO THE BLAST FENCE FOR GROUND HIGH POWER RUNS, AND 2 FCF’S TO CHECK THE TORQUE PROBLEM. WE REPLACED THE TORQUE SENSOR AND SWAPPED ALTERNATORS FOR TROUBLESHOOTING WITH NO HELP. THE LAST THING TO CHANGE WAS THE ECU AND THAT WAS ACCOMPLISHED. COMPLETED HIGH POWER GROUND RUNS AND RELEASED THE AIRCRAFT. THERE HAS NOT BEEN A REPEAT WRITE-UP SINCE THE ECU WAS CHANGED.

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