# NTSB DEN99LA090: Beech D95A, N64TA, Englewood, CO, May 20, 1999

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 20, 1999, 13:20 local (19:20 UTC)
- Place: Englewood, CO
- Coordinates: 39.690753, -104.909011 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.6908&lon=-104.9090&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 22, 2000
- Report: Approved by Office Director
- NTSB case key (mKey): 46416
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN99LA090
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46416/pdf
- Page: https://openairdocs.org/ntsb/DEN99LA090

## Probable cause

The collapse of the right main landing gear during landing due to a fatigue crack, in the strut, which had an undetermined origin.

## Sequence of events

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

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

## Analysis

The pilot said he was performing his third touch-and-go landing when during the ground roll the right main landing gear collapsed.  The airplane went down on its right wing.  Subsequently, the right wing was bent upwards, and the right side of the fuselage was wrinkled.  Postaccident examination of the right main landing gear strut, by a private metallurgist contracted by the insurance company, revealed a preexisting fatigue fracture which extended through approximately 50 percent of the strut.

## Factual narrative

On May 20, 1999, approximately 1320 mountain daylight time, a Beech D95A, N64TA, was substantially damaged when the right main landing gear collapsed during landing roll at Centennial Airport, Englewood, Colorado.  The commercial pilot, the sole occupant in the airplane, was not injured.  The airplane was being operated by Enterprise Aircraft Management, Inc., of Denver, Colorado, under Title 14 CFR Part 91.  Visual meteorological conditions prevailed for the local flight which originated approximately 30 minutes before the accident.  No flight plan had been filed.

The pilot said he was performing his third touch-and-go landing when, during the ground roll, the right main landing gear collapsed.  The airplane went down on its right wing.  Subsequently, the right wing was bent upwards and the right side of the fuselage was wrinkled.

Postaccident examination of the right main landing gear strut, by a private metallurgist contracted by the insurance company, revealed a preexisting fatigue fracture which extended through approximately 50 percent of the strut.

## Aircraft

- Registration: [N64TA](https://openairdocs.org/deregistered/N64TA-2013-10-29), registration cancelled 2013-10-29, S/N TD-568, built 1964 (OpenAirDocs)
- Reported make and model: Beech D95A
- Registry model: [Beech D95A](https://openairdocs.org/model/beech-d95a) (registry code 1153408) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: TD-568
- Airframe hours: 6365
- Engines: Lycoming IO-360-B1B 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Bruce Vogel
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 15, 1999, 104 hours before
- Departed: APA
- Airport: APA, Centennial Airport, runway 35L, 7,004 × 77 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 500 total, 81 in this make and model, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 11 knots, gusting 15
- Visibility: 10 statute miles
- Lowest ceiling: 6,500 ft broken
- Temperature: 63 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: APA

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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