SDR NSVA20070205

Service difficulty report · Hmu · Saab 340B

Difficulty date: August 8, 2007
Submitted: January 7, 2008
Operation: Air carrier
Aircraft: N338CJ
Make and model: Saab 340B
Aircraft serial: 338
Aircraft time: 27,790 hours, 31,491 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Hmu
Part number: 6068T72P22
Part serial: WY554843
Condition: Malfunctioned
Location: Nr 2 Engine
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: D

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

What was found

NR 2 ENGINE TORQUE INDICATION INCREASES AND DECREASES 3 PERCENT APPROX EVERY 5-10 SECONDS, ITT, NG AND FUEL FLOW OK SHOW CHANGE AT SAME TIME. REMOVED AND REPLACED NR 2 ENGINE HMU IAW GE MM 73-00-00. OPS CHECK GOOD LEAK CHECK GOOD, P/N OFF 6068T72P22, S/N OFF WY554843, S/N ON WYG41854.

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