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June 22, 2015 · Gates Learjet 35A · N640BA

Grosse Ile, MI

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 22, 2015
Injury Outcomes
No injuries (4 uninjured)
Location
Grosse Ile, MI
Aircraft
Gates Learjet 35A (1991)
Tail Number
N640BA
Operator
Beta Aire
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA15CA163

The pilot reported that during the takeoff roll, while accelerating through 130 knots, a "faint bump" was felt. The flight crew continued the takeoff and experienced difficulty controlling the airplane, but were able to stabilize the airplane in flight. The flight crew reported that there were no annunciations or warnings on the flight deck, but they were able to identify damage to the leading edge of the right wing. The flight crew diverted to an alternate airport and landed without incident. The airplane sustained substantial damage to the right wing. Following the accident, a deer was found on the runway at the departure airport. The departure airport perimeter is partially fenced and co-exists on an island with a nature conservancy. The pilot reported no mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation prior to hitting the deer.

NTSB Probable Cause

The airplane's collision with a deer on the unfenced runway during the takeoff roll. Contributing to the accident is the airport's failure to establish a continuous fence between the runway and the nature conservancy.

Full Narrative

The pilot reported that during the takeoff roll, while accelerating through 130 knots, a "faint bump" was felt. The flight crew continued the takeoff and experienced difficulty controlling the airplane, but were able to stabilize the airplane in flight. The flight crew reported that there were no annunciations or warnings on the flight deck, but they were able to identify damage to the leading edge of the right wing. The flight crew diverted to an alternate airport and landed without incident. The airplane sustained substantial damage to the right wing. Following the accident, a deer was found on the runway at the departure airport. The departure airport perimeter is partially fenced and co-exists on an island with a nature conservancy. The pilot reported no mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation prior to hitting the deer.

Flight

Event TypeAccident
Event Time16:45 EDT
Nearest AirportGrosse Ile Muni (0nm SSE)
Runway22
Runway Length4846 ft
Runway Width100 ft
Flight Plan FiledIFR
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftGates Learjet 35A
Tail NumberN640BA
Aircraft CategoryAir
DamageSubstantial
OperatorBeta Aire
Operating RulePart 91
Engines2
Engine TypeTurbofan
Engine DetailsHoneywell/Garrett · TFE-731-2-2B · Turbofan · 3500 | Honeywell/Garrett · TFE-731-2-2B · Turbofan · 3500
Seats10

People & Injuries

Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 52 · Second Class · None
Crew 2Age 62 · First Class · None
Crew 3None
Crew 4None

Conditions

ConditionsVMC
LightDaylight
Wind190° @ 3 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F
Altimeter29.88 inHg
Observation Time20:34
Weather SourceWFAC

Appendix: Source Data