On December 2, 1982, a Cessna 340A (registration N4326C) operated by United Provisions, Inc. was involved in an aviation accident near Austin, TX. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During final approach, full flaps extension over a hill caused a high sink rate and hard landing. The pilot observed no damage initially, but a later inspection revealed substantial wing spar assembly damage.
Incident Sequence
The pilot reported that while on final approach to land, full flaps were extended as the aircraft crossed over a hill immediately before the runway threshold. After full flaps were selected, the aircraft entered a high sink rate and subsequently landed hard on the end of the runway. No further problems were noted during the landing and roll-out.
Post-Landing Inspection
The pilot examined the aircraft after landing and did not observe any damage. The aircraft was then flown back to Houston, Texas, where a more complete inspection was performed. This inspection revealed that a wing spar assembly was substantially damaged.