Casualties unknown

Nose gear failure after multiple bounces during landing approach (N737RB)

Tyge Valley, OR, US

On August 20, 1988, a Cessna 172N (registration N737RB) was involved in an aviation accident near Tyge Valley, OR. Investigators recorded the probable cause as: The pilot's improper use of flight controls during the landing approach, specifically failing to use engine power to correct a high sink rate, which resulted in multiple bounces and subsequent nose gear failure. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-22Data APIEditorial standards

Aircraft developed a high sink rate late in the approach. The pilot attempted correction using only elevator controls, resulting in multiple bounces on the runway before the nose gear collapsed.

What happened

During the final phase of the approach, the aircraft began to descend at an excessively high rate. In response to this situation, the pilot elected to utilize elevator input exclusively to arrest the sink rate and level the aircraft for touchdown.

This technique resulted in the aircraft impacting the runway surface with significant force. The impact caused the airplane to bounce multiple times. On the third bounce, the structural integrity of the landing gear was compromised, leading to the failure of the nose gear. Following this mechanical failure, the aircraft nosed over onto its fuselage.

The investigation

Post-accident analysis focused on the pilot's decision-making process during the critical approach phase. The pilot later acknowledged that the use of elevator alone was insufficient for correcting the high sink rate and admitted that power adjustments should have been utilized to stabilize the descent profile.

Probable cause

The pilot's improper use of flight controls during the landing approach, specifically failing to use engine power to correct a high sink rate, which resulted in multiple bounces and subsequent nose gear failure.

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Frequently asked questions

What happened in the 20 Aug 1988 Cessna 172N accident near Tyge Valley, OR?

Aircraft developed a high sink rate late in the approach. The pilot attempted correction using only elevator controls, resulting in multiple bounces on the runway before the nose gear collapsed.

What aircraft was involved and where did it happen?

The accident on 20 Aug 1988 involved a Cessna 172N, registration N737RB, at Tyge Valley, OR.

What was the probable cause of the accident?

The pilot's improper use of flight controls during the landing approach, specifically failing to use engine power to correct a high sink rate, which resulted in multiple bounces and subsequent nose gear failure.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X26718. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.