Date & Time:
Jun 18, 2009
Type of aircraft:
Learjet 40
Operator:
Registration:
N998AL
Flight Phase:
Taxiing
Flight Type:
Test
Survivors:
Yes
MSN:
45-2029
YOM:
2005
Country:
United States of America
Region:
North America
Crew on board:
2
Crew fatalities:
0
Pax on board:
0
Pax fatalities:
0
Other fatalities:
0
Total fatalities:
0
Circumstances:
The Learjet 40 was being operated by two A&P mechanics for the purpose to taxi out for an engine test run on the n°1 engine. During taxi it was necessary to stop the aircraft for motor vehicle traffic. The mechanic advanced the throttles for taxi and to climb a 15 to 20 foot hill. When the mechanic attempted to reduce the throttles only the n° 2 engine could be retarded. The n°1 engine was at a high power setting and could not be reduced. The aircraft left 4 skid marks as the main tires were locked for approximately the length of a little more than a football field. The mechanics could not shut down the n°1 engine. Control of the aircraft was lost with the n°1 engine at a high power setting. The right wing impacted the corner of a hanger. The nose gear broke and an embankment stopped the aircraft. The mechanics were then able to shut down both engines and exited the aircraft with no injuries.
Probable cause:
The NTSB did not proceed to any investigation on this event.
