# NTSB CEN09LA197: Neland Richard L Daytona SU, N170DN, Guymon, OK, February 26, 2009

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 26, 2009, 12:45 local (18:45 UTC)
- Place: Guymon, OK
- Coordinates: 36.684444, -101.504722 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.6844&lon=-101.5047&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Defining event: [Takeoff: Part(s) separation from AC](https://openairdocs.org/ntsb-events/338)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 14, 2009
- Report: Approved by Office Director
- NTSB office: Central Region
- Parties: FAA/FSDO
- NTSB case key (mKey): 73460
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN09LA197
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/73460/pdf
- Page: https://openairdocs.org/ntsb/CEN09LA197

## Probable cause

Failure of the left main landing gear shock/strut during takeoff for undetermined reasons.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Landing gear system: main gear strut/axle/truck](https://openairdocs.org/ntsb-findings/01023213): Aircraft › Aircraft systems · Failure (probable cause); cases with it: [Neland Richard L DAYTONA SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/01023213/cases.md?model=05621RN), [All aircraft, 86 cases](https://openairdocs.org/ntsb-findings/01023213/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Takeoff: Part(s) separation from AC](https://openairdocs.org/ntsb-events/338) (defining event); cases with it: [Neland Richard L DAYTONA SUPER CUB, 1 case](https://openairdocs.org/ntsb-events/338/sequence.md?model=05621RN), [All aircraft, 563 cases](https://openairdocs.org/ntsb-events/338/sequence.md)
- [Landing-flare/touchdown: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Neland Richard L DAYTONA SUPER CUB, 1 case](https://openairdocs.org/ntsb-events/440/sequence.md?model=05621RN), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md)
- [Landing-flare/touchdown: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Neland Richard L DAYTONA SUPER CUB, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05621RN), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md)

## Analysis

During takeoff, the experimental airplane's left main landing gear shock strut rod separated. During an emergency landing, the separated rod impaled the ground, which caused the airplane to nose over on the left wing and come to rest inverted. The airplane was equipped with 35-inch-wide tundra tires. According to the tire manufacturer, several operators of this make/model airplane are equipped with 31-inch-wide tundra tires and there have been no reported shock strut rod separations. The investigation could not determine why the rod separated.

## Factual narrative

On February 26, 2009, approximately 1230 central standard time, an experimental Neland Richard L. Dayton Super Cub, N170DN, sustained substantial damage when it flipped over during an emergency landing at Guymon Municipal Airport (GUY), Guymon, Oklahoma. The private pilot/owner was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the flight conducted under 14 Code of Federal Regulations Part 91. According to a Federal Aviation Administration (FAA) inspector, who responded to the accident site, the airplane's left main landing gear shock strut rod separated during take off from a farm field. The pilot decided to continue the flight to GUY and called emergency personnel to meet him at the airport. The pilot landed on the northeast grassy side of runway 06. The damaged landing gear shock strut rod impaled the ground during the landing, which caused the airplane to nose over on the left wing. The airplane came to rest inverted on the upper wing surface and rudder assembly. An examination of the airplane revealed that the pilot's center forward cross-over tube, left window center post fuselage frame, and rudder were substantially damaged. The airplane was equipped with 35-inch-wide tundra tires. According to the tire manufacturer, several operators of this make/model airplane are equipped with 31-inch-wide tundra tires and there have been no reported shock strut rod separations. The pilot/owner will install landing gear shcok-strut safety cables once the airplane is repaired.

## Aircraft

- Registration: [N170DN](https://openairdocs.org/aircraft/N170DN), registered now, S/N DC-04 (OpenAirDocs)
- Reported make and model: NELAND RICHARD L DAYTONA SU
- Registry model: [Neland Richard L DAYTONA SUPER CUB](https://openairdocs.org/model/neland-richard-l-daytona-super-cub) (registry code 05621RN) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: DC-04
- Engines: Lycoming O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Delta Charley Lease LLC
- Registered owner: Delta Charley Lease LLC
- Airworthiness certificate: Special, Experimental (Special)
- Departed: None, Guymon, OK
- Destination: GUY, Guymon, OK
- Flight plan: Unknown
- Airport: GUY, Guymon Municipal Airport, runway 06, 1,795 × 200 ft, grass/turf

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles

## 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 20090226002499A](https://openairdocs.org/incident/20090226002499A), Feb 26, 2009: Neland DAYTONASUPER, Guymon, OK, Substantial damage. On February 26, 2009, N170DN, a [privacy data omitted] dayton super cub experimental aircraft, departed a farm field approximately 20 miles south of Guymon,…

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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