# NTSB CHI91DTK03: Wag-Aero Super Cuby, N336DT, Roscoe, SD, July 19, 1991

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: July 19, 1991, 18:45 local (23:45 UTC)
- Place: Roscoe, SD
- Coordinates: 45.449588, -99.330886 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.4496&lon=-99.3309&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report March 24, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 14880
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI91DTK03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14880/pdf
- Page: https://openairdocs.org/ntsb/CHI91DTK03

## Probable cause

THE PILOT'S INADVERTENT STALL AND INADEQUATE REMEDIAL ACTION.  ASSOCIATED FACTORS ARE THE PILOT'S LACK OF RECENT TOTAL EXPERIENCE AND INADEQUATE PREFLIGHT PLANNING/PREPARATION.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, maneuvering
  - fluid,fuel - starvation
  - fuel tank selector position - improper, pilot in command
  - preflight planning/preparation - inadequate, pilot in command (contributing factor)
- Loss of control - in flight, maneuvering
  - stall - inadvertent, pilot in command (cause)
  - lack of recent total experience, pilot in command (contributing factor)
  - remedial action - inadequate, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - open field

## Analysis

A WITNESS TO THE ACCIDENT OBSERVED THE ACCIDENT AIRPLANE FLYING ABOUT 100' AGL.  HE LOOKED AWAY BUT RETURNED HIS GAZE TO THE AIRPLANE WHEN HE HEARD THE ENGINE STOP.  HE OBSERVED THE AIRPLANE PITCH 'STRAIGHT DOWN WITH ITS WINGS LEVEL' AND DESCEND INTO THE GROUND.  THE AIRPLANE WAS SERVICED JUST BEFORE THE FLIGHT WITH 12.6 GALLONS OF FUEL ADDED TO THE EMPTY LEFT TANK.  APPROXIMATELY 1.5 TO 2 GALLONS WAS OBSERVED IN THE RIGHT TANK JUST PRIOR TO THE FLIGHT.

## Aircraft

- Registration: [N336DT](https://openairdocs.org/deregistered/N336DT-1994-02-10), registration cancelled 1994-02-10, S/N 13662465 (OpenAirDocs)
- Reported make and model: Wag-Aero, Inc. SUPER CUBY
- Registry model: [Thompson Darrel D. WAG AERO CUBY](https://openairdocs.org/model/thompson-darrel-d-wag-aero-cuby) (registry code 05655Y8) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 13662465
- Engines: LYCOMING O-290-GPU 125 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Richard L. Fuhrmann
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, January 2, 2000

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 23; student; medical: class 3, valid medical--w/ waivers/lim; seat: front; toxicology performed; flight hours: 170 total, 15 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 9 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Observed at: ABR, 45 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 19910719028739A](https://openairdocs.org/incident/19910719028739A), Jul 19, 1991: Amtr CUBY, Roscoe, SD, Destroyed, 1 fatal. Made pass over home,pulled up steeply. Engine quit,stalled. Began pullout too late. Low fuel tank caused unporting.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.