SDR 041103

Service difficulty report · Computer · Lear 35A

Difficulty date: April 11, 2003
Submitted: April 16, 2003
Operation: Air carrier
Aircraft: N274JS
Make and model: Lear 35A
Aircraft serial: 274
Aircraft time: 8,659 hours, 8,435 cycles
Engine: Garrtt TFE731*
Engine time: 8,558 hours, 8,335 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Computer
Condition: Failed
Location: Fuel System
Stage of operation: CR
How discovered: O
Nature of condition: X, J
Precautionary procedure: E, A

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

What was found

RIGHT FUEL COMPUTER FAILED, OPERATED ENGINE IN MANUAL MODE, OIL PSI NORMAL, NR 2 N2 FLUCTUATED, NR 2 ITT GAUGE FAILED MOMENTARILY, ABOUT 20 MINUTES LATER ENGINE FLAMED OUT AT FL390. AIRCRAFT LANDED WITHOUT INCIDENT. STAGE OF OPERATION PART 91, EMPTY. GARRET THE ENGINE MANUFACTURE IS TROUBLESHOOTING THE ENGINE. A LOANER ENGINE HAS BEEN INSTALLED.

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