NTSB Identification: SEA99LA166.
The docket is stored in the Docket Management System (DMS). Please contact Records Management Division
Accident occurred Saturday, September 18, 1999 in IONA, ID
Probable Cause Approval Date: 11/02/2000
Aircraft: Pitts 11, registration: N11PU
Injuries: 1 Fatal.

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

A videotape of the accident showed the aircraft successfully completing a series of two counter-clockwise aileron rolls, immediately followed by two clockwise snap rolls. During the second run of maneuvers, initiated from an approximate altitude of 100-200 feet AGL, the aircraft recovered from the final snap roll in a 90 degree right-wing down, nose low attitude rather than the wings level attitude of the previous maneuver. One to two seconds later, the aircraft returned to a wings-level attitude having lost approximately half of its available altitude. The nose pitched back to a flat attitude and the aircraft impacted the ground. The aircraft's engine was heard to rev on the tape about a second after the impact.

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

The pilot-in-command's delayed recovery from a snap roll. A contributing factor was the low altitude at which the maneuver was initiated.

Full narrative available

Index for Sep1999 | Index of months