# NTSB DFW07CA128: Doggett Jack Samson, N985JD, Conroe, TX, June 1, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: June 1, 2007, 17:45 local (22:45 UTC)
- Place: Conroe, TX
- Coordinates: 30.3511111111111, -95.4086111111111
- Nearby events: https://openairdocs.org/map.md?lat=30.3511&lon=-95.4086&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 25, 2007
- Report: Approved by Office Director
- Parties: Houston, Texas
- NTSB case key (mKey): 65917
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW07CA128
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65917/pdf
- Page: https://openairdocs.org/ntsb/DFW07CA128

## Probable cause

The failure of the main landing gear for undetermined reasons.

## Sequence of events

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

- Main gear collapsed, landing - roll
  - landing gear - collapsed (cause)
- Main gear collapsed, landing - roll
  - reason for occurrence undetermined (cause)
  - landing gear - failure (cause)

## Analysis

Both main landing gears on a tailwheel-equipped homebuilt airplane collapsed during the landing roll.  The 34,000-hour airline transport pilot, who was not the owner, reported that during the landing roll on the 6,000-foot-long, by 150-foot-wide asphalt runway, he began to apply "slight braking pressure."  The pilot reported that the single-engine airplane began to "shudder rapidly."  The left main landing gear collapsed, and immediately following that, the right main landing gear also collapsed.  The radial engine powered airplane came to rest on the centerline of runway 14 and the pilot exited the airplane unassisted without injuries.  Examination of the airplane by an FAA inspector, revealed that the left wing sustained structural damage; however, he was unable to determine the reason for the failure of the landing gear.  The winds at the time of the mishap were reported from 140 degrees at 8 knots.

**This narrative was modified on September 28, 2007.**

## Factual narrative

Both main landing gears on a tailwheel-equipped homebuilt airplane collapsed during the landing roll.  The 34,000-hour airline transport pilot, who was not the owner, reported that during the landing roll on the 6,000-foot-long, by 150-foot-wide asphalt runway, he began to apply "slight braking pressure."  The pilot reported that the single-engine airplane began to "shudder rapidly."  The left main landing gear collapsed, and immediately following that, the right main landing gear also collapsed.  The radial engine powered airplane came to rest on the centerline of runway 14 and the pilot exited the airplane unassisted without injuries.  Examination of the airplane by an FAA inspector, revealed that the left wing sustained structural damage; however, he was unable to determine the reason for the failure of the landing gear.  The winds at the time of the mishap were reported from 140 degrees at 8 knots.

**This narrative was modified on September 28, 2007.**

## Aircraft

- Registration: [N985JD](https://openairdocs.org/aircraft/N985JD), registered now, S/N 001, built 1999 (OpenAirDocs)
- Reported make and model: DOGGETT JACK Samson
- Registry model: [Doggett Jack SAMSON](https://openairdocs.org/model/doggett-jack-samson) (registry code 05607D2) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 001
- Airframe hours: 100
- Engines: Pratt & Whitney R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Jack Doggett
- Registered owner: Jack Dogggett
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Condition, November 1, 2006
- Departed: CXO, CONROE, TX
- Destination: CXO, Conroe, TX
- Airport: CXO, Lone Star Executive Airport, runway 14, 6,000 × 150 ft, asphalt

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 64 °F
- Altimeter: 29.85 inHg
- Observed at: CXO

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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