Casualties unknown

Pilot on Night Cross-Country Flight Found After Two Weeks on Mountain (N4344Q)

Mill Creek, PA, US

On August 28, 2000, a Cessna 172L (registration N4344Q) operated by Craig S. Treu was involved in an aviation accident near Mill Creek, PA. Investigators recorded the probable cause as: The pilot's improper pre-flight planning, and in-flight planning decision to continue visual fight into deteriorating adverse weather conditions. Factors were the night conditions, low clouds and fog. 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

An instrument-rated pilot on a night cross-country flight with no flight plan, no weather briefing, and an inoperative transponder impacted rising terrain and was found inverted two weeks later.

Incident Details

The pilot, who held an instrument rating, departed on a night cross-country flight. According to the investigation, the flight was conducted into deteriorating weather conditions. The pilot did not file a flight plan, did not obtain a weather briefing, and the aircraft's transponder was inoperative. A hand-held GPS was reported to be onboard the aircraft.

When the pilot failed to arrive at the intended destination, a search was initiated. The airplane was located two weeks later on the side of a mountain. The aircraft had impacted rising terrain and came to rest in an inverted position.

Investigation Findings

Investigators found no evidence of pre-existing mechanical failure or malfunction with either the engine or the airframe. Witnesses in the area reported low clouds, fog, and rain near the time of the accident.

Frequently asked questions

What happened in the 28 Aug 2000 Cessna 172L accident near Mill Creek, PA?

An instrument-rated pilot on a night cross-country flight with no flight plan, no weather briefing, and an inoperative transponder impacted rising terrain and was found inverted two weeks later.

What aircraft was involved and where did it happen?

The accident on 28 Aug 2000 involved a Cessna 172L, registration N4344Q, operated by Craig S. Treu, at Mill Creek, PA.

What was the probable cause of the accident?

The pilot's improper pre-flight planning, and in-flight planning decision to continue visual fight into deteriorating adverse weather conditions. Factors were the night conditions, low clouds and fog.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X21827. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.