# Accident 19990804047179A: Cessna 172N, Denver, CO, August 4, 1999

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 4, 1999, 13:15 local time
- Place: Denver, CO
- Airport: Centennial Airport
- Damage: Substantial damage
- Phase of flight: Level Off Touchdown
- Operating rules: General operating rules (Part 91)
- Location: 39.6398° N, 104.9903° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.6398&lon=-104.9903&mi=10
- Aircraft: N733CK, a cancelled registration (https://openairdocs.org/deregistered/N733CK-2000-03-30) (OpenAirDocs)
- Registry model: Cessna 172N (registry code 2072434, https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Reported make and model: CESSNA 172N
- Reported engine: LYC O360A4A
- People aboard: 1
- Fatal injuries: 0
- Pilot certificates: Student
- Pilot flight hours: 19 total, 19 in this make and model, 19 in the last 90 days
- NTSB investigation: [NTSB DEN99LA135](https://openairdocs.org/ntsb/DEN99LA135) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990804047179A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(.4)THE STUDENT PILOT WAS IN THE LANDING FLARE WHEN THE WIND SHIFTED FROM THE LEFT TAILWIND TO A RIGHT TAILWIND. HE SAID THAT THE WING VELOCITY SUDDENLY TRIPLED, AND THE AIRPLANE'S RIGHT WING WAS THROWN UP AT A RADICAL ANGLE.  THE AIRPLANE DEPARTED THE LEFT SIDE OF THE RUNWAY AND WENT DOWN A STEEP SLOPE, CARTWHEELED, AND CAME TO REST NOSE DOWN.                            (-23)STUDENT PILOT PERFORMING TOUCH AND GO LANDINGS, VFR CONDITIONS, GROUND LOOPED AIRCRAFT ATTEMPTING TO LAND ON RUNWAY 35L.  SUBSTANTIAL STRUCTURAL WING DAMAGE TO AIRCRAFT.  ENGINE DAMAGE EXTENSIVE.  NO INJURIES.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DEN99LA135](https://openairdocs.org/ntsb/DEN99LA135), Aug 4, 1999: Cessna 172N (N733CK), Englewood, CO, substantial damage. Probable cause: The unforecasted sudden wind change, and the pilot's failure to maintain aircraft control. A factor was the down sloping terrain next to the runway.

## Other reports on N733CK (1)

Matched to the same aircraft by N-number and date.

- [Incident 19790920024049I](https://openairdocs.org/incident/19790920024049I), Sep 20, 1979: Cessna 172N (N733CK), Castle Rock, CO, Minor damage. Airplane hit something in flight, dent in right wing. Suspect possible "blue ice".

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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