Lancair 320 N360N

Summary

On 27 July 2010 at about 17:00 local time, a Lancair 320 registered N360N, operated by Larry O. Sundholm, was involved in an accident near Spokane, Washington, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

27 July 2010 at 17:00

Classification

Accident

Location

Spokane, Washington, United States

Nearest airport

Felts Field (SFF)

Coordinates

47.6789, -117.3319

Aircraft

Lancair 320

Registration

N360N

Category

Airplane

Engines

1

Operator

Larry O. Sundholm

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Spokane → Spokane

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR10LA374

1 person had minor injuries.

Loss of airplane control due to the asymmetric flap condition.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot reported that, after initiating a go-around and during a climbing left turn to re-enter the traffic pattern, his attempt to roll out of the turn was unsuccessful. The bank angle continued to near 90 degrees before he was able to maneuver the airplane close to the runway. The airplane ultimately stalled and collided with the runway surface. A postaccident examination of the airplane revealed an asymmetric flap condition. Shortly after the accident, the airplane kit manufacturer issued a Service Bulletin that addressed the asymmetric flap problem. The bulletin advised operators to inspect for adequate clearance and ensure that sufficient stiffness is established such that when fully deployed, the flap’s leading edge will not have a tendency to flex upward and snag the trailing edge of the wing. The condition could jam the flap and subsequently preclude its retraction.

Quoted verbatim from the NTSB record.