SDR MALA976015

Service difficulty report · Sensor · Saab 340B

Difficulty date: February 26, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N421XJ
Make and model: Saab 340B
Aircraft serial: 421
System (JASC): 7712 · Engine BMEP/Torque Indicating
Part: Sensor
Part number: 5066T52G05
Condition: Failed
Location: Lt Engine
Stage of operation: CL
Nature of condition: N
Precautionary procedure: A

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

What was found

AFTER TAKEOFF, THE LEFT ENGINE TEMP STARTED TO FLUCTUATE, FOLLOWED BY THE ENGINE RPM AND TORQUE; LEFT IGNITION LIGHT ALSO ILLUMINATED. AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE LEFT NP SPEED SENSOR AND NO1 TORQUE SENSOR, ALL CHECKS GOOD.

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