Casualties unknown

Mid-Air Collision Near Kenmore Air Harbor (N99034)

Seattle, WA, US

On April 5, 1986, a Cessna 172P (registration N99034) operated by Kenmore Air Harbor was involved in an aviation accident near Seattle, WA. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

Two aircraft, N99034 and N65783, collided mid-air near Kenmore Air Harbor while both were climbing at approximately 200 feet MSL. The right wing of N99034 separated aftwards upon impact with the right float of N65783, and a section of N65783's right wing penetrated N99034's cockpit. Clear sunny conditions prevailed.

Incident Overview

On a local solo flight, N99034 departed Kenmore Air Harbor. Witnesses reported observing the aircraft take off and initiate a climb to the south. Meanwhile, N65783 was returning from a recurrency check flight and was approaching from a southerly direction in a climb, having just completed a touch-and-go landing. Both aircraft were approximately 200 feet MSL at the time of the collision.

Collision Details

The right wing of N99034 separated in an aftwards fashion upon impact with the right float of N65783. Additionally, a 49-inch section of the outboard right wing of N65783 separated during its penetration into the cockpit of N99034.

Environmental Conditions

Numerous boats were observed on the lake surface, and clear sunny meteorological conditions prevailed at the time of the accident.

Frequently asked questions

What happened in the 5 Apr 1986 Cessna 172P accident near Seattle, WA?

Two aircraft, N99034 and N65783, collided mid-air near Kenmore Air Harbor while both were climbing at approximately 200 feet MSL. The right wing of N99034 separated aftwards upon impact with the right float of N65783, and a section of N65783's right wing penetrated N99034's cockpit. Clear sunny conditions prevailed.

What aircraft was involved and where did it happen?

The accident on 5 Apr 1986 involved a Cessna 172P, registration N99034, operated by Kenmore Air Harbor, at Seattle, WA.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X33411. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.