# NTSB CEN18LA079: Dayton A Dabbs Magni M-16, N317KD, Point Venture, TX, January 13, 2018

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 13, 2018, 12:00 local (18:00 UTC)
- Place: Point Venture, TX
- Coordinates: 30.379999, -98.011108
- Nearby events: https://openairdocs.org/map.md?lat=30.3800&lon=-98.0111&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Defining event: [Maneuvering: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 5, 2019
- Report: Approved by Office Director
- NTSB office: Central Region
- Parties: FAA - San Antonio FSDO
- SAIBs cited in the narratives: [SAIB CE-09-35](https://openairdocs.org/saib/CE-09-35) (OpenAirDocs)
- NTSB case key (mKey): 96627
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN18LA079
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/96627/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=96627
- Page: https://openairdocs.org/ntsb/CEN18LA079

## Probable cause

The loss of engine power for reasons that could not be determined because a postaccident engine test run showed no anomalies that would have precluded normal operation, and the pilot's decision to conduct the flight at a low altitude.

## Findings

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

- [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Dayton A Dabbs MAGNI M-16, 1 case](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=056332E), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md)
- [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Dayton A Dabbs MAGNI M-16, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=056332E), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md)
- [Performance/control parameters: altitude](https://openairdocs.org/ntsb-findings/01062012): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Dayton A Dabbs MAGNI M-16, 1 case](https://openairdocs.org/ntsb-findings/01062012/cases.md?model=056332E), [All aircraft, 1,310 cases](https://openairdocs.org/ntsb-findings/01062012/cases.md)

## Sequence of events

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

- [Maneuvering: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Dayton A Dabbs MAGNI M-16, 1 case](https://openairdocs.org/ntsb-events/341/sequence.md?model=056332E), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md)
- [Landing: Hard landing](https://openairdocs.org/ntsb-events/092); cases with it: [Dayton A Dabbs MAGNI M-16, 1 case](https://openairdocs.org/ntsb-events/092/sequence.md?model=056332E), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/sequence.md)

## Analysis

The private pilot reported that, during a flight in an experimental gyroplane, he decreased altitude by reducing power to fly over the shoreline of a lake. When the gyroplane was at an altitude of 50 ft above ground level, the pilot applied power to gain altitude, but the engine did not respond. The pilot stated that the gyroplane entered a stall and impacted the ground. The pilot noted that that he did not have time to regain airspeed due to the low altitude. The pilot also noted that he should have been operating at a higher altitude, which would have allowed him to land safely by maintaining airspeed with the nose of the gyroplane down. A postaccident engine test run was performed, and the engine started and ran without any issues detected. The collected data from the gyroplane's engine monitor showed that, for the accident flight, the engine rpm dropped from about 5,000 to 1,000 rpm before the end of the data. Besides rpm, the collected data contained only the following parameters: exhaust gas temperatures for each cylinder, water temperature, oil temperature, and atmospheric pressure. The temperature and dew point recorded at a nearby airport were not in the range of susceptibility for carburetor icing. Due to the lack of additional engine monitor data and the successful postaccident engine test run, the reason(s) for the total loss of engine power could not be determined. In addition, the pilot's decision to conduct the flight at a low altitude precluded remedial action after the total loss of engine power and the subsequent stall.

## Factual narrative

On January 13, 2018, about 1200 central standard time, an experimental amateur-built Magni M-16 gyroplane, N317KD, sustained substantial damage during a forced landing following a complete loss of engine power while maneuvering near Point Venture, Texas. The private pilot was not injured. The gyroplane's tail boom, rotor mast support, landing gear, and fuselage sustained damage during the forced landing. The aircraft was registered to Off The Ground, LLC and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The local flight originated from Taylor Municipal Airport (T74), Taylor, Texas about 0900. The pilot reported that flight was a pleasure flight around a nearby lake with an intended return to the departure airport. He stated that he decreased altitude to fly over the shoreline by reducing power. Upon reaching 50 feet agl., he applied power to gain altitude, but the engine did not respond. He said that the gyroplane went into a stall and impacted the ground. In his report, the pilot noted that he should have maintained a higher altitude which would have allowed him to land safely by maintaining airspeed with the nose of the gyroplane down. He noted that he did not have time to regain airspeed due to the low altitude. The gyroplane was examined after the accident by a Federal Aviation Administration (FAA) Inspector. During the examination, an engine test run was performed and the engine started and ran without any issues detected. The gyroplane's engine monitor was downloaded and the data for the accident flight showed that the engine rpm dropped from about 5,000 rpm to 1,000 rpm prior to the end of the collected data. The collected data contained only the following parameters: exhaust gas temperatures for each cylinder, water temperature, oil temperature, atmospheric pressure and rpm. The temperature and dew point recorded at the Austin-Bergstrom International Airport, about 20 nautical miles southeast of the accident site were 7 degrees Celsius, and -7 degrees Celsius respectively. According to a carburetor icing probability chart contained in FAA Special Airworthiness Information Bulletin (SAIB) CE-09-35, entitled "Carburetor Icing Prevention", the recorded temperature and dew point were not in the range of susceptibility for carburetor icing.

## Aircraft

- Registration: [N317KD](https://openairdocs.org/aircraft/N317KD), registered now, S/N 16169634, built 2016 (OpenAirDocs)
- Reported make and model: DAYTON A DABBS MAGNI M-16 (NO SERIES)
- Registry model: [Dayton A Dabbs MAGNI M-16](https://openairdocs.org/model/dayton-a-dabbs-magni-m-16) (registry code 056332E) (OpenAirDocs)
- Registry engine: [Rotax 914UL](https://openairdocs.org/engine/rotax-914ul) (registry code 55553, 4 cycle) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Serial number: 16169634
- Year built: 2016
- Airframe hours: 832
- Engines: Rotax 914 115 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Condition, October 20, 2017, 12 hours before
- Departed: T74, TAYLOR, TX
- Destination: T74, TAYLOR, TX
- Equipment: None

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 66; injuries: none; sport pilot, private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review February 18, 2017; seat: front; restraint: lap only; flight hours: 382 total, 45 in this make and model, 382 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 30° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 45 °F, dew point 19 °F
- Altimeter: 30.61 inHg
- Observed at: AUS, 20 nm away

## 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 20180113000769A](https://openairdocs.org/incident/20180113000769A), Jan 13, 2018: Dayton A Dabbs MAGNI M-16, Point Venture, TX, Substantial damage. Aircraft departed from T74 in taylor, TX on a personal flight. During the flight, the aircraft lost power and impacted the ground causing damage to the…

## Docket (5 files)

The files NTSB released with the investigation on March 8, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=96627. 1.4 MB in all.

- FAA SAIB CE-09-35 (item 1, .PDF, 111 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460705&FileExtension=.PDF&FileName=FAA%20SAIB%20CE-09-35-Master.PDF
- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 2, .PDF, 901 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460706&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF
- Engine Monitor Data (item 3, .PDF, 152 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460707&FileExtension=.PDF&FileName=Engine%20Monitor%20Data-Master.PDF
- Record of Conversation with Pilot (item 4, .PDF, 57 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460708&FileExtension=.PDF&FileName=Record%20of%20Conversation%20with%20Pilot-Master.PDF
- E-mail from FAA Inspector (item 5, .PDF, 151 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460709&FileExtension=.PDF&FileName=E-mail%20from%20FAA%20Inspector-Master.PDF

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.