# NTSB SEA07CA261: Aviat A-1B, N319AM, Grangeville, ID, September 13, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: September 13, 2007, 09:00 local (16:00 UTC)
- Place: Grangeville, ID
- Coordinates: 45.942501, -116.123336
- Nearby events: https://openairdocs.org/map.md?lat=45.9425&lon=-116.1233&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 29, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 66683
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA07CA261
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66683/pdf
- Page: https://openairdocs.org/ntsb/SEA07CA261

## Probable cause

The pilot's failure to maintain directional control during the landing roll. Factors include a ditch located between the runway and the taxiway.

## 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)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch (contributing factor)

## Analysis

After an uneventful touchdown in calm winds, the pilot failed to maintain directional control of the tailwheel-equipped aircraft during the landing roll. After the aircraft departed the right side of the runway, it encountered a ditch located between the runway and the taxiway, and was substantially damaged. The pilot reported that there were no anomalies or malfunctions in the aircraft's flight controls or tailwheel steering systems.

## Factual narrative

After an uneventful touchdown in calm winds, the pilot failed to maintain directional control of the tailwheel-equipped aircraft during the landing roll. After the aircraft departed the right side of the runway, it encountered a ditch located between the runway and the taxiway, and was substantially damaged. The pilot reported that there were no anomalies or malfunctions in the aircraft's flight controls or tailwheel steering systems.

## Aircraft

- Registration: [N319AM](https://openairdocs.org/aircraft/N319AM), registered now, S/N 2319, built 2005 (OpenAirDocs)
- Reported make and model: Aviat A-1B
- Registry model: [Aviat A-1B](https://openairdocs.org/model/aviat-a-1b) (registry code 2210406) (OpenAirDocs)
- Registry engine: [Lycoming O-360-A1P](https://openairdocs.org/engine/lycoming-o-360-a1p) (registry code 42259, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2319
- Engines: Lycoming O-360-A1P reciprocating; Lycoming O-360-A1P reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Jon Hudson
- Registered owner: Jon and Berkley Hudson
- Airworthiness certificate: Standard, Normal
- Departed: KBZN, Bozeman, MT
- Destination: S80, Grangeville, ID
- Airport: S80, Grangeville Airport, runway 07, 5,100 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; private; airplane ratings: single-engine land; medical: class 3; flight hours: 218 total, 91 in this make and model, 22 in the last 90 days, 10 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 20070913020749I](https://openairdocs.org/incident/20070913020749I), Sep 13, 2007: Aviat A1B, Grangeville, ID, Minor damage. (-23) The pilot was landing on runway 07 at Grangeville 'S80' id. Upon roll out the pilot lost control of the aircraft. The aircraft exited the runway on the…

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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