SDR NSVA200600122

Service difficulty report · Ecu · Saab 340B

Difficulty date: August 10, 2006
Submitted: November 29, 2006
Operation: Air carrier
Aircraft: N334CJ
Make and model: Saab 340B
Aircraft serial: 334
Aircraft time: 27,600 hours, 31,845 cycles
Engine: Ge CT79B
System (JASC): 7712 · Engine BMEP/Torque Indicating
Part: Ecu
Part number: 6071T20P17
Part serial: ECDT1306
Condition: Malfunctioned
Location: Lt Torque Ind
Stage of operation: TO
How discovered: O
Nature of condition: N
Precautionary procedure: C

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

What was found

L TORQUE GAUGE FLUCTUATES +/- 20 PERCENT FROM SET TORQUE, NO CHANGE IN ITT, NG OR FUEL FLOW, NO AUDIBLE CHANGE IN POWER, NO YAW MOVEMENT. IGNITION LIGHT TURNS ON TORQUE IS RESTORED. REMOVED AND REPLACED LEFT ENG DECU IAW 76-10-57-04. OPS CHECK GOOD, PN ON/OFF 6071T20P17 SN ON ECDT1415, SN OFF ECDT1306.

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