# NTSB DEN90LA051: Bellanca 7KCAB, N11641, Burlington, CO, February 6, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 6, 1990, 14:30 local (21:30 UTC)
- Place: Burlington, CO
- Coordinates: 39.299781, -102.27095 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.2998&lon=-102.2709&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 29, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 17888
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90LA051
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17888/pdf
- Page: https://openairdocs.org/ntsb/DEN90LA051

## Probable cause

THE FAILURE OF THE DUAL STUDENT TO CORRECT A GROUND LOOP SWERVE DURING TAKEOFF GROUND RUN. INADEQUATE SUPERVISION BY THE CFI WAS A FACTOR IN THE ACCIDENT.

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - ground loop/swerve - not corrected, dual student (cause)
  - supervision - inadequate, pilot in command(cfi) (contributing factor)
- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - snowbank
- Nose over, takeoff - roll/run

## Analysis

THE INSTRUCTOR PILOT (CFI) SAID THE DUAL STUDENT WAS MAKING A TAKEOFF. DURING THE GROUND RUN, THE AIRPLANE SWERVED LEFT, BUT ACCORDING TO THE CFI, HE WAS ABLE TO CORRECT THE SWERVE. THE CFI SAID THAT WHEN THE TAIL WHEEL LIFTED, THE PLANE TURNED HARD LEFT, AND THE CFI WAS UNABLE TO REGAIN DIRECTIONAL CONTROL BEFORE THE PLANE STRUCK A SNOW BANK ON THE LEFT SIDE OF THE RWY. THE PLANE NOSED OVER AND CAME TO REST INVERTED.

## Aircraft

- Registration: N11641 (not matched to a registry record)
- Reported make and model: BELLANCA 7KCAB
- Category: Airplane
- Serial number: 302-72
- Engines: LYCOMING IO-320-E2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: John F. Taylor
- Registered owner: Unknown
- Departed: 5CO, BURLINGTON, CO
- Destination: 5CO
- Flight plan: VFR
- Airport: 5C0, Kit Carson, runway 15, 5,200 × 75 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; flight instructor, commercial, airline transport; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 10,100 total, 125 in this make and model, 9,900 as pilot in command, 35 in the last 90 days, 20 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °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 19900206001749A](https://openairdocs.org/incident/19900206001749A), Feb 6, 1990: Bbavia 7KCAB, Burlington, CO, Substantial damage. Student lost control on takeoff roll. CFI unable to correct, aircraft ground looped into snowbank and flipped over.

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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