# NTSB MKC85LA203: Cessna 172G, N3943L, Deepwater, MO, September 1, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 1, 1985, 09:15 local (14:15 UTC)
- Place: Deepwater, MO
- Coordinates: 38.250095, -93.77082 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.2501&lon=-93.7708&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 34022
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC85LA203
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34022/pdf
- Page: https://openairdocs.org/ntsb/MKC85LA203

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - weather condition - carburetor icing conditions (contributing factor)
  - carburetor heat - improper use of, pilot in command (cause)
- Forced landing, cruise - normal
- On ground/water collision with object, landing - roll
  - terrain condition - none suitable (contributing factor)
  - object - tree(s) (contributing factor)

## Analysis

THE ACFT WAS CRUSING AT 2,000 FT, 50 MIN AFTER TAKEOFF WHEN THE ENG BEGAN RUNNING ROUGH, LOST RPM, AND THEN QUIT. THE PLT MADE A FORCED LANDING IN A SMALL FLD AND THE COLLIDED WITH TREES DURING THE LANDING ROLL. THE INVESTIGATION, WHICH INCLUDED RUNNING THE ENG TO 1800 RPM, FAILED TO REVEAL ANY EVIDENCE TO EXPLAIN THE REPORTED LOSS OF POWER.

## Aircraft

- Registration: [N3943L](https://openairdocs.org/deregistered/N3943L-1988-04-06), registration cancelled 1988-04-06, S/N 17254112 (OpenAirDocs)
- Reported make and model: CESSNA 172G
- Registry model: [Cessna 172G](https://openairdocs.org/model/cessna-172g) (registry code 2072420) (OpenAirDocs)
- Category: Airplane
- Serial number: 172-54112
- Airframe hours: 1940
- Engines: CONTINENTAL O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Glenn R. Sunderland
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 25, 1985, 12 hours before
- Departed: H20, CARTHAGE, MO
- Destination: 84K, CLINTON, MO
- Airport: Unknown

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,036 total, 256 in this make and model, 1,000 as pilot in command, 20 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 4 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 63 °F
- Altimeter: 29.00 inHg
- Observed at: SZL, 31 nm away

## 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 19850901067819A](https://openairdocs.org/incident/19850901067819A), Sep 1, 1985: Cessna STC172, Deepwater, MO, Substantial damage. Engine ran rough and lost power. Struck trees during rollout in field. Loss of power unexplained. Auto fuel in use.

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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