Service difficulty report · Fire Warning · Lear 35A

Difficulty date
October 29, 2007
Submitted
November 20, 2007
Operation
Air carrier
Aircraft
N394PA
Make and model
Lear 35A
Aircraft serial
462
Engine
Garrtt TFE7312
Engine time
9,012 hours, 7,676 cycles
Part
Fire Warning
Condition
Intermittent
Location
Nacelle
Stage of operation
IN
How discovered
9
Nature of condition
J
Precautionary procedure
K

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

What was found

FALSE ENGINE FIRE LIGHT. THIS IS AN INTERMITTENT DISCREPANCY; WE HAVE ALREADY SENT A SDR EARLIER THIS MONTH. COULD NOT DUPLICATE. CHECKED FIRE LOOPS, WIRING, CHECKED FOR BLEED AIR LEAKS, GROUND RAN, AND SWAPPED ENGINE FIRE DETECT CONTROL. (SUSPECT ENGINE EXHAUST FIRE LOOP) WE THINK IT IS MAKING CONTINUITY PREMATURELY. PULLED BACK THRUST LEVER, LIGHT EXTINGUISHED, LANDED. (K)

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