Service difficulty report · Engine · Lear 35A

Difficulty date
January 25, 2005
Submitted
March 25, 2005
Operation
General aviation
Aircraft
N96FN
Make and model
Lear 35A
Aircraft serial
186
Engine
Garrtt TFE73122B
Part
Engine
Part number
TFE73122B
Part serial
P74780
Condition
Failed
Location
Right
Part time
11,671 hours
Stage of operation
CR
How discovered
O
Nature of condition
B, J
Precautionary procedure
E

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

What was found

WHILE AT FL300, EXPERIENCED AN INFLIGHT FAILURE OF THE RT ENGINE AS FOLLOWS, RT ENGINE INSTRUMENTS, ITT, N1, N2 AND FUEL FLOW ALL BEGAN INCREASING. RT FUEL COMPUTER WAS TURNED OFF, POWER WAS REDUCED TO IDLE. THE ENGINE INSTRUMENTS CONTINUED TO INCREASE AND JUST PRIOR TO ENGINE SHUTDOWN, A LOUD BANG WAS HEARD FROM THE RT SIDE, FOLLOWED BY A BRIGHT FLASH AND SMELL OF SMOKE IN THE COCKPIT. AC LANDED SAFELY WITHOUT FURTHER INCIDENT. ENGINE WAS REMOVED FROM AIRCRAFT AND SENT TO AN OVERHAUL FACILITY DETAILS OF THE ENGINE DISASSEMBLY FINDINGS ARE CONTAINED IN REPORT NR GR2-703 ATTACHED. IT WAS RECOMMENDED THAT HP TURBINE BE FWD FOR FURTHER INSPECTION TO DETERMINE MODE FAILURE. (K)

More about the Lear 35A