Casualties unknown

Aircraft Experiences Hard Landing and Porpoising, Subsequent Inspection Reveals Structural Damage (N734TH)

Hayward, CA, US

On May 21, 1984, a Cessna 172N (registration N734TH) operated by Siegel Aviation was involved in an aviation accident near Hayward, CA. 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 2026-07-04Data APIEditorial standards

After a hard landing and porpoising down the runway, the pilot performed a go-around and tower fly-by. Controllers observed no apparent damage. The aircraft landed without further incident, but inspection later revealed structural damage including a buckled firewall and canted nose wheel strut.

Incident Description

The aircraft landed hard and porpoised down the runway. The pilot executed a go-around and reported to the tower that he was experiencing control problems. The pilot then performed a tower fly-by, during which controllers observed no apparent damage. After the fly-by, the pilot was cleared to land and completed the landing without further incident.

Inspection Findings

Upon post-flight inspection, the following damage was discovered: the firewall was buckled, the nose wheel strut was canted, the fuselage was wrinkled, and the floor was caved in. The damage was such that the vertical instrument panel support was pulled down onto the push-pull rods for the aileron and elevator controls.

No further details were provided regarding the aircraft type, registration, operator, location, or occupants.

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Frequently asked questions

What happened in the 21 May 1984 Cessna 172N accident near Hayward, CA?

After a hard landing and porpoising down the runway, the pilot performed a go-around and tower fly-by. Controllers observed no apparent damage. The aircraft landed without further incident, but inspection later revealed structural damage including a buckled firewall and canted nose wheel strut.

What aircraft was involved and where did it happen?

The accident on 21 May 1984 involved a Cessna 172N, registration N734TH, operated by Siegel Aviation, at Hayward, CA.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X39650. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.