# NTSB ANC83LA168: Cessna 207, N1619U, Umiat, AK, September 11, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: September 10, 1983, 17:15 local (Sep 11, 1983, 01:15 UTC)
- Place: Umiat, AK
- Coordinates: 64.810096, -147.719253 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=64.8101&lon=-147.7193&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4169
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA168
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4169/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA168

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - maintenance,modification - not understood, pilot in command (cause)
  - inadequate transition/upgrade training, pilot in command (cause)
  - performance data - misjudged, pilot in command (cause)
  - flight controls - improper use of, pilot in command (cause)
  - throttle/power control - improper use of, pilot in command (cause)
- In flight collision with terrain/water, takeoff - initial climb
- Nose gear collapsed, takeoff - initial climb
  - landing gear,nose gear assembly - overload (contributing factor)

## Analysis

THE ACFT COLLIDED WITH THE GROUND AFTER THE PILOT LOST CONTROL OF IT DURING TAKEOFF. THE FLT STARTED AS AN AIR TAXI OPERATION BUT WHEN THE PILOT WAS UNSUCCESSFUL IN 2 TAKEOFF ATTEMPTS HE OFF LOADED HIS PASSENGERS UNTO ANOTHER ACFT. THIS STOL MODIFIED ACFT BECAME UNCONTROLLABLE AS THE PILOT ATTEMPTED A THIRD TAKEOFF ALONE. WHEN THE ACFT HIT THE GROUNDTHE NOSE GEAR COLLAPSED. THE PILOT STATED THAT MORE EMPHASIS SHOULD BE GIVEN TO LOW SPEED OPERATION OF MODIFIED ACFT.

## Aircraft

- Registration: [N1619U](https://openairdocs.org/deregistered/N1619U-1988-06-02), registration cancelled 1988-06-02, S/N 20700219 (OpenAirDocs)
- Reported make and model: CESSNA 207
- Registry model: [Cessna 207](https://openairdocs.org/model/cessna-207) (registry code 2073602) (OpenAirDocs)
- Category: Airplane
- Serial number: 20700219
- Airframe hours: 5066
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Frontier Flying Service
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, June 2, 1983, 19 hours before
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 7,800 total, 3,000 in this make and model, 7,800 as pilot in command, 260 in the last 90 days, 120 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 5 statute miles
- Lowest ceiling: 1,500 ft overcast
- Temperature: 27 °F, dew point 19 °F

## 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 19830910047909A](https://openairdocs.org/incident/19830910047909A), Sep 10, 1983: Cessna 207, Umiat, AK, Substantial damage. Pilot was attempting takeoff from short sandbar. Robertson modified stol aircraft stalled and crashed.

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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