SDR SWIA200413363

Service difficulty report · Hmu · Emb EMB120ER

Difficulty date: May 31, 2004
Submitted: June 3, 2004
Operation: Air carrier
Aircraft: N212SW
Make and model: Emb EMB120ER
Aircraft serial: 120276
Aircraft time: 29,876 hours, 36,683 cycles
Engine: Pwa PW118
System (JASC): 7320 · Fuel Controlling System
Part: Hmu
Condition: Malfunctioned
Location: Lt Engine
Stage of operation: CR
How discovered: O
Nature of condition: R, J
Precautionary procedure: O

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

What was found

DURING CRUISE, PARTIAL POWER LOSS ON LEFT ENG. FUEL FLOW AROUND 70, TORQUE SHOWING 0 AND REDUCED T6, NP NH AND NL VALUES. NO MAP LIGHTS. REMOVED LEFT HMU AND INSTALLED A SERVICEABLE UNIT, IAW MM 73-21-00 AND RII CARD 73-301. OPS CHECKS GOOD.

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