AQP: UNKNOWN

DeGraw DeBird | N140DG

Napleon, Michigan

  • DTSB analysis published
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Key facts

  • DateAugust 3, 2024
  • Local time9:00 PM
  • LightDay
  • WeatherVMC
  • Phase of flightInitial Climb
  • People on board1
  • Fatalities1
  • NTSB numberCEN24FA298 Date &
  • NTSB statusUnder investigation

Accident Location

City, State
Napleon, Michigan
Latitude
42.182944
Longitude
-84.277778

Aircraft Info

N Number
N140DG
Make
DeGraw
Model
DeBird
Category / Class
Gyroplane
Amateur Built
Yes

Pilot Info

Pilot in command
DeGraw, Karol
Gender
Female
Age
83
Certification
Private Pilot
IFR rating
No
Medical
None
Flight school
Unknown
Instructional flight
Unknown

Analysis

Weather
VMC
Time of day
Day
Phase of flight
Initial Climb
Pilot error
Yes
Pilot incapacitation
No
People on board
1
PIC fatality
1
Total fatalities
1
NTSB number
CEN24FA298 Date &
NTSB travel
Unknown
AQP category
UNKNOWN →

Probable Cause

THE DTSB

The DTSB determines the Probable cause of this accident to be Pilot Error, in that the pilot did take off from runway 34 at her home airport, and immediately entered in to a level flight attitude in order to gain speed. The pilot then pulled aft in attempt to climb aggressively, whereupon the main rotor blades struck the tail due to excessive G loading of the blades. The pilot was 83 years old and did not possess a medical certificate of any kind. The pilot’s husband heard both the takeoff and the sound of the blade impact and knew that a crash had followed, as he quickly boarded another aircraft and took off to search for the downed aircraft. The aircraft was found about 250 feet beyond the departure end of the runway. The location of the tail surfaces at the accident site was consistent with separation before the gyroplane descended into the trees. The tail surfaces had two separate areas of damage with features consistent with having been impacted by the main rotor. Examination of the main rotor blades revealed yellow paint transfer that was also consistent with the main rotor impacting the tail of the gyroplane.

NTSB

Probable Cause issued 8/20/2026 – 24 months after the accident: Separation of the gyroplane’s tail due to main rotor blade contact for reasons that could not be determined.

Recommendation

THE DTSB

The DTSB recommends that all pilot of all rotor wing aircraft, both helicopter and gyro, become familiar and use extreme caution for the in flight conditions and in flight pilot flight control inputs which could cause the main blades to bend sufficiently in flight so as to strike the tail section. There is no recovery from this condition in flight, once the tail has been struck. Prevention is all we have.

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