NTSB Identification: DEN06LA070.
The docket is stored in the Docket Management System (DMS). Please contact Records Management Division
Accident occurred Friday, April 21, 2006 in Englewood, CO
Probable Cause Approval Date: 10/03/2006
Aircraft: Cessna T-R182RG, registration: N6170S
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The airplane landed and, according to the pilot, he may have "possibly inadvertently hit the gear handle." The nose gear retracted and the airplane skidded down the centerline before drifting off the left side and sliding another 300 feet. The left main landing gear then retracted. In addition to a broken left wing tip fairing, scraped landing gear doors, a crushed exhaust manifold, and a bent propeller, there was structural damage to the nose wheel tunnel. According to the manufacturer, the airplane was equipped with a "squat switch" that senses weight-on-wheels and prevents inadvertent landing gear retraction. The spokesman said there were several reasons why the landing gear may have retracted: a defective squat switch, an over-inflated nose gear strut (that would cause the electrical contacts of the squat switch to separate), misrigging of the squat switch, or the airplane may have bounced, allowing the electrical contacts to separate. According to the repair facility that retrieved the airplane, the squat switch was functionally tested and it operated satisfactorily.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

the pilot inadvertently retracting the landing gear.

Full narrative available

Index for Apr2006 | Index of months