Runway excursion Accident Rotorsport UK MTOSport 2017 N615MW, Tuesday 11 August 2020
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Date:Tuesday 11 August 2020
Time:07:15 LT
Type:Silhouette image of generic MT model; specific model in this crash may look slightly different    
Rotorsport UK MTOSport 2017
Owner/operator:Private
Registration: N615MW
MSN: RSUK-M01704
Year of manufacture:2019
Total airframe hrs:183 hours
Engine model:Rotax 912UL
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Springfield Robertson County Airport (M91), Springfield, TN -   United States of America
Phase: Take off
Nature:Private
Departure airport:Springfield, TN (M91)
Destination airport:Nashville-John C. Tune Airport, TN (KJWN)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The pilot conducted an intersection takeoff with the gyroplane loaded near its maximum gross weight. The pilot stated he lifted off at 45 knots and accelerated "in ground effect" in an attempt to reach his planned climb speed of 55 knots, but the gyroplane would not accelerate past 48 knots. Data from an onboard GPS navigation device revealed that, in calm winds, the gyroplane reached a maximum groundspeed of 40 knots.
Although the gyrocopter was only about 10 ft above the ground (agl) where, based on the pilot's performance planning, it should have been 50 ft agl, and sufficient runway and turf overrun were available to abort the takeoff, the pilot chose to continue the takeoff. As the gyroplane approached the airport boundary, it was neither climbing nor accelerating. Due to obstacles beyond the airport's boundary, the pilot performed a forced landing between the airport boundary fence and the road. The gyroplane landed hard and sustained substantial damage to the fuselage.
Despite the pilot having completed detailed weight and balance and performance-planning calculations, the pilot continued the takeoff when the gyroplane failed to achieve its predicted performance by large margins. The pilot reported that there were no mechanical deficiencies with the gyroplane that would have precluded normal operation. Examination of the wreckage and a postaccident engine run revealed no anomalies with the gyrocopter. The reason the gyrocopter did not perform as expected could not be determined based on available evidence.

Probable Cause: The pilot's decision to continue the takeoff when the gyroplane's actual performance failed to match that predicted in his performance planning. Contributing to the accident was the gyrocopter's insufficient performance for reasons that could not be determined.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: ERA20LA284
Status: Investigation completed
Duration: 2 years 1 month
Download report: Final report

Sources:

NTSB ERA20LA284

Location

Revision history:

Date/timeContributorUpdates
12-Aug-2020 03:57 Geno Added
12-Aug-2020 17:06 RobertMB Updated [Aircraft type, Narrative, ]
08-Sep-2020 12:43 ASN Update Bot Updated [Time, Cn, Operator, Departure airport, Destination airport, Source, Narrative, Plane category, ]
26-Sep-2022 19:14 ASN Update Bot Updated [Time, Other fatalities, Destination airport, Source, Narrative, Category, Accident report, ]

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