# NTSB DEN82FTM14: Osprey II, N50733, Ogden, UT, July 20, 1982

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: July 20, 1982, 14:00 local (20:00 UTC)
- Place: Ogden, UT
- Location: 41.2284° N, 111.9681° W: Placed by OpenAirDocs: center of Ogden, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.2284&lon=-111.9681&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report July 20, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72081
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82FTM14
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72081/pdf
- Page: https://openairdocs.org/ntsb/DEN82FTM14

## Sequence of events

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

- Loss of engine power, takeoff - initial climb
  - carburetor heat control,cable/push-pull rod - loose (cause)
  - weather condition - high density altitude (contributing factor)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
  - wheels up landing - intentional, pilot in command
  - terrain condition - rough/uneven (contributing factor)
  - terrain condition - rising (contributing factor)

## Analysis

THE PILOT REPORTED THAT DURING TAKEOFF, HE EXPERIENCED A 400 RPM DROP IN THE ENGINE SPEED. HE BEGAN A RIGHT TURN TO LAND ON RUNWAY 04, BUT REPORTEDLY, THE ENGINE THEN STOPPED. THE PILOT INTENDED TO LAND ON THE HULL WITH THE GEAR RETRACTED; HOWEVER, THE PLANE "PANCAKED" ONTO A SMALL RIDGELINE AND WAS BADLY DAMAGED. AN INVESTIGATION REVEALED THAT THE CARBURETOR HEAT CONTROL LEVER WAS IN THE "OFF" (COLD) POSITION, BUT THE CARBURETOR HEAT CONTROL DOOR WAS IN THE HOT POSITION. THE CONTROL CABLE HAD SLIPPED OUT OF POSITION AT THE CLAMP WHICH SECURED IT TO THE ENGINE PYLON. THE ENGINE DRIVEN FUEL PUMP WAS FOUND FRACTURED, BUT NO FUEL STAINS WERE FOUND IN THE AREA OF THE PUMP. LATER, THE ENGINE WAS PREPARED FOR A RUN-UP, AND SUBSEQUENTLY, IT OPERATED NORMALLY. THE DENSITY ALTITUDE WAS ABOUT 9700 FT.

## Aircraft

- Registration: N50733 (not matched to a registry record)
- Reported make and model: OSPREY II
- Category: Airplane, amateur-built
- Serial number: 105
- Airframe hours: 164
- Engines: LYCOMING O-320 160 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: E.B. Hummel
- Registered owner: E.B. Hummel
- Departed: OGDEN, UT
- Destination: RAWLINGS, WY
- Airport: Ogden Muni, runway 16, 5,349 × 200 ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 70; airline transport, commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: unknown, valid medical--w/ waivers/lim; flight hours: 22,161 total, 164 in this make and model, 22,083 as pilot in command, 9 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 8 knots

## 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 19820720030689A](https://openairdocs.org/incident/19820720030689A), Jul 20, 1982: Amtros OSPREY2, Ogden, UT, Substantial damage. Engine lost power on takeoff, crash landed off airport. Found carburetor heat control disconnected, carb heat on.

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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