Service difficulty report · Fire Loop · Lear 60LEAR

Difficulty date
May 14, 2006
Submitted
May 15, 2006
Operation
Air carrier
Aircraft
N244FX
Make and model
Lear 60LEAR
Aircraft serial
178
Aircraft time
5,921 hours, 4,176 cycles
Engine time
5,821 hours, 4,107 cycles
Part
Fire Loop
Part number
24409135
Condition
Out Of Tolerance
Location
Rt Engine
Stage of operation
CR
How discovered
O
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

RIGHT FIRE WARNING ILLUMINATED AND EXTINGUISHED WITH THE REDUCTION OF POWER. MAINTENANCE REMOVED THE COWLING AND INSPECTED THE ENGINE, FIRE LOOPS AND PLUMBING. NO DEFECTS WERE FOUND. ENGINE RUNS PERFORMED WITH NO DEFECTS FOUND. ALL FIRE LOOPS WERE DISCONNECTED FOR INSPECTION WITH NO DEFECTS FOUND. ALL FIRE LOOPS RUNG OUT WITH A MEGGER. THE HOT SECTION LOOP WAS FOUND TO HAVE 3.6 MEGAOHMS READING FOR INNER TO INNER AND .206 MEGAOHMS INNER TO OUTER. THIS IS OUT OF SPECIFICATION. HOT SECTION FIRE LOOP IS BEING REPLACED AND GROUND RUNS WILL BE PERFORMED. THIS DATA HAS BEEN FORWARDED TOP LEARJET ENGINEERING VIA THE JSLLC CAS REPORTING SYSTEM