PIPER PA-18 near Aspen, CO — 2009-08-09

Probable cause

The pilot's failure to maintain adequate separation behind a preceding large business jet, which resulted in an encounter with wake turbulence.

NTSB narrative

Prior to takeoff, the pilot was warned by tower controllers to use caution for wake turbulence from a preceding large business jet. During takeoff roll, prior to the tailwheel becoming airborne, the airplane ground-looped to the left and came to rest beside the runway. The pilot stated that the winds were calm and that he did not wait a sufficient amount of time behind the preceding airplane before starting his takeoff. Examination of the airplane revealed a bent right wing spar, bent right horizontal stabilizer and elevator.

NTSB coding

• Aircraft wake turb encounter · Takeoff

Evidence available

• 1 docket document

Docket documents1

• Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1form

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