# NTSB SEA94LA090: Bellanca 8KCAB, N86807, Driggs, ID, March 24, 1994

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 24, 1994, 16:45 local (23:45 UTC)
- Place: Driggs, ID
- Location: 43.7298° N, 111.1050° W: Placed by OpenAirDocs: center of Driggs, ID, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.7298&lon=-111.1050&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 2, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 41901
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA94LA090
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41901/pdf
- Page: https://openairdocs.org/ntsb/SEA94LA090

## Probable cause

DIRECTIONAL CONTROL WAS NOT MAINTAINED. A FACTOR TO THE ACCIDENT WAS: INADEQUATE REMEDIAL ACTION.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command
  - remedial action - inadequate, pilot in command (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - snowbank

## Analysis

DURING A LOCAL INSTRUCTIONAL FLIGHT, THE FLIGHT INSTRUCTOR TOOK OVER TO DEMONSTRATE A LANDING TO THE STUDENT. AFTER THE AIRPLANE TOUCHED DOWN, IT VEERED TO THE LEFT. THE FLIGHT INSTRUCTOR CORRECTED WITH RUDDER CONTROL; HOWEVER, THE AIRPLANE CONTINUED TO SWERVE UNTIL THE AIRPLANE CONTACTED A SNOW BANK ON THE SIDE OF THE RUNWAY.

## Factual narrative

On March 24, 1994, at 1645 mountain standard time, a Bellanca 8KCAB, N86807, veered off the runway during the landing roll at the Driggs Airport, Driggs, Idaho, and collided with a snow bank. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local instructional flight.  The airplane was substantially damaged and the certificated flight instructor and private pilot were not injured.

The flight instructor reported that the purpose of the flight was to give the private pilot instruction in the tailwheel airplane for sign off purposes.  The private pilot performed two touch- and-go landings without incident.  After the second takeoff, the flight instructor took over to demonstrate a landing to the private pilot.  After the airplane touched down, the airplane veered slightly to the left.  The flight instructor corrected with right rudder and right brake.  The airplane swerved back to the right, however, the flight instructor again had to correct with left rudder.  The swerving action continued until the pilot was unable to maintain directional control and the airplane veered sharply to the left and collided with a snow bank near the edge of the runway.

## Aircraft

- Registration: [N86807](https://openairdocs.org/aircraft/N86807), registered now, S/N 22-74 (OpenAirDocs)
- Reported make and model: BELLANCA 8KCAB
- Registry model: [Bellanca 8GCBC](https://openairdocs.org/model/bellanca-8gcbc) (registry code 1220803) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-74
- Airframe hours: 2859
- Engines: LYCOMING O-360-C2A 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Grand Valley Aviation
- Registered owner: Soyland, Eric
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 3, 1993, 75 hours before
- Airport: U59, Teton Peaks, runway 21, 5,200 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; commercial, flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: rear; flight hours: 7,500 total, 295 in this make and model, 5,250 as pilot in command, 3 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: 20,000 ft overcast
- Temperature: 45 °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 19940324006699A](https://openairdocs.org/incident/19940324006699A), Mar 24, 1994: Bbavia 8KCAB, Driggs, ID, Substantial damage. CFI giving dual check out in tail dragger lost directional control demostrating landing swerved into snowbank.

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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