Tue, Dec 23, 2008
Air Wisconsin Plane Landed Without Left Main December 14
In its Preliminary Report issued this week, the National
Transportation Safety Board notes a Bombardier CRJ200 that landed
with its left maingear up at Philadelphia International Airport
(PHL) December 14 had just been serviced by maintenance workers...
during which time they may have failed to properly attach the main
gear uplock assembly.
"Maintenance had been performed on both the left and right main
landing gear systems prior to the incident flight," reads the
Prelim. "Post-incident inspection of the aircraft revealed that,
the upper attachment bolt for the left main landing gear uplock
assembly, which is designed to be attached to both the uplock
mechanism and the structure, was attached to the airplane structure
only."
As ANN reported, the Air Wisconsin jet was on
a repositioning flight after being serviced in Norfolk, VA.
Originally scheduled to depart as a US Airways Express revenue
flight, the aircraft was delayed for over three hours on the ground
in ORF and passengers were transferred to other flights.
The NTSB report does not explicitly say whether the departure
delay was related to the maintenance work on the jet's landing
gear. The two pilots and one flight attendant onboard the 50-seat
regional jet were unhurt in the emergency landing.
"The flight crew received indications of a left main landing
gear problem prior to landing and stated that they completed the
applicable Quick Reference Handbook (QRH) procedures, but were
unable to lower the left main landing gear," the NTSB notes. "They
elected to land with the nose and right main landing gear in the
down and locked position and the left main landing gear up."
The on-scene investigation revealed scuff marks to the left wing
tip and outboard end of the left aileron, with more extensive
damage to the flaps on the left wing, which were ground down from
the flap training edge, through the upper and lower skins, to the
ribs.
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