# NTSB FTW83LA233: Cessna 170A, N170KM, Prague, OK, May 14, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 13, 1983, 19:15 local (May 14, 1983, 00:15 UTC)
- Place: Prague, OK
- Location: 35.5455° N, 97.5790° W: Placed by OpenAirDocs from NTSB’s distance and direction from INTEGRIS BAPTIST MEDICAL CENTER (OK19), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.5455&lon=-97.5790&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 20900
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA233
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20900/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA233

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - nonmechanical, approach - vfr pattern - base turn
  - other airport/runway maintenance - inadequate, fbo personnel (cause)
  - fluid,fuel - water (cause)
  - aircraft preflight - inadequate, pilot in command (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
- Nose over, landing - flare/touchdown
  - terrain condition - rough/uneven (contributing factor)

## Analysis

WHILE TURNING TO BASE LEG FOR LANDING THE ENG QUIT. WITH INSUFFICIENT ALTITUDE TO REACH THE ARPT, THE PLT SELECTED ANOTHER FIELD, BUT LANDED SHORT IN ROUGH TERRAIN. A LARGE QUANTITY OF WATER WAS FOUND IN THE ACFT'S FUEL TANKS WHICH WASTRACED TO A CONTAMINATED FUEL STORAGE TANK AT THE ACFT'S HOME BASE.

## Aircraft

- Registration: [N170KM](https://openairdocs.org/aircraft/N170KM), registered now, S/N 19166, built 1949 (OpenAirDocs)
- Reported make and model: CESSNA 170A
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 19166
- Airframe hours: 3820
- Engines: CONTINENTAL O-300 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Bob Snow
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 20, 1983
- Departed: ADM, ARDMORE, OK
- Airport: OK19, Prague, runway 17, 3,000 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial; airplane ratings: multi-engine sea, single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 4,386 total, 1,200 in this make and model, 20 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 110° at 11 knots
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 73 °F, dew point 66 °F
- Altimeter: 29.00 inHg
- Observed at: OKC

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19830513074149A](https://openairdocs.org/incident/19830513074149A), May 13, 1983: Cessna 170A, Prague, OK, Substantial damage. Engine quit at cruise altitude. Crash landed short of airport runway. Water in fuel due to water in storage tank.

## Other investigations on N170KM (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 MKC89LA030](https://openairdocs.org/ntsb/MKC89LA030), Nov 19, 1988: Cessna 170A (N170KM), Mccrory, AR, substantial damage

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.

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