# NTSB NYC07CA190: Ackert Dakota Hawk DH23, N6128A, Sebring, FL, August 12, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: August 12, 2007, 11:41 local (15:41 UTC)
- Place: Sebring, FL
- Coordinates: 27.456388, -81.342224
- Nearby events: https://openairdocs.org/map.md?lat=27.4564&lon=-81.3422&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 29, 2007
- Report: Approved by Office Director
- Parties: FAA/FSDO
- NTSB case key (mKey): 66430
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC07CA190
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66430/pdf
- Page: https://openairdocs.org/ntsb/NYC07CA190

## Probable cause

Preexisting cracking of the landing gear tubing.

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - landing gear,main gear strut - cracked (cause)

## Analysis

The pilot of the amateur-built Dakota Hawk DH23 had just landed and had slowed the airplane to about 20 mph during the rollout when the right main landing gear collapsed rearward.  The airplane ground-looped, and the right wing impacted the pavement.  A subsequent Federal Aviation Administration examination of the airplane revealed that the landing gear tubing, under a flange in an area that was difficult to see, appeared to have been cracked prior to the accident.  The airplane was manufactured in 2006 and had 90 hours of operation.

## Factual narrative

According to the pilot of the amateur-built Dakota Hawk DH23, he had just landed and had slowed the airplane to about 20 mph during the rollout when the right main landing gear collapsed.  The airplane ground-looped, and the right wing impacted the pavement.  A subsequent Federal Aviation Administration examination of the airplane revealed that the landing gear tubing, under a flange in an area that was difficult to see, appeared to have been cracked prior to the accident.  The airplane was manufactured in 2006 and had 90 hours of operation.

## Aircraft

- Registration: [N6128A](https://openairdocs.org/aircraft/N6128A), registered now, S/N 001, built 2006 (OpenAirDocs)
- Reported make and model: Ackert Dakota Hawk DH23
- Registry model: [Ackert Robert DAKOTA HAWK DH23](https://openairdocs.org/model/ackert-robert-dakota-hawk-dh23) (registry code 05610EU) (OpenAirDocs)
- Registry engine: [Continental C85-12](https://openairdocs.org/engine/continental-c85-12) (registry code 17124, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 001
- Engines: Continental C85-12 reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Raimundo Romeu
- Airworthiness certificate: Special, Experimental (Special)
- Departed: FMY, Fort Myers, FL
- Destination: SEF, Sebring, FL
- Airport: SEF, Sebring, runway 14, 5,190 × 300 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; private; airplane ratings: single-engine land; medical: class 3; flight hours: 446 total, 90 in this make and model, 20 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 4 knots
- Visibility: 10 statute miles
- Temperature: 90 °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 20070812017829A](https://openairdocs.org/incident/20070812017829A), Aug 12, 2007: Amtr DAKOTAHKDH23, Sebring, FL, Substantial damage. (-23) On August 12, 2007 at approximately 1141 EDT, an experimental homebult dakota hawk, N6128A, flown by the pilot [privacy data omitted] landed on runway 14…

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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