SDR O2JA20200625001

Service difficulty report · Engine · Lear 35A

Difficulty date: June 24, 2020
Submitted: June 25, 2020
Operation: Air carrier
Aircraft: N491RV
Make and model: Lear 35A
Aircraft serial: 491
Aircraft time: 18,590 hours, 14,589 cycles
Engine: Garrtt TFE731*
Engine time: 11,636 hours, 9,256 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Power Loss
Location: Left
Stage of operation: CL
How discovered: O
Nature of condition: R, J
Precautionary procedure: A

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

What was found

THE ISSUE HAPPENS SOMETIMES. DURING CLIMB OUT AROUND 14,000FT TO 20,000FT THE LEFT ENGINE LOST THRUST ASSOCIATED WITH N1, ITT, N2, AND FUEL FLOW INDICATION CHANGE. FUEL COMPUTER LIGHT DIDN`T APPEAR ON THE ANNUNCIATOR PANEL. THE ISSUE STOPPED WHEN BELOW 12,000FT AND ENGINE OPS RETURNED TO NORMAL.

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