GAA17CA297

NTSB accident investigation · CGS Hawk · Findlay, OH · May 18, 2017

Accident · Minor injuriesData collectionFinal report
Date
May 17, 2017, 20:35 local (May 18, 2017, 00:35 UTC)
Place
Findlay, OH
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
UNREGCGS Hawk
Defining event
Takeoff: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report December 15, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
Case key
95215

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack during takeoff, which resulted in an aerodynamic stall.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll aircraft: 9,295 casesProbable cause
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Capability exceededAll aircraft: 990 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 1,681 casesProbable cause
WindEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentAll aircraft: 110 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot of the tailwheel-equipped airplane reported that, during takeoff, the "wind got more gusty than [he] could handle being too low and slow." The airplane aerodynamically stalled and impacted the ground. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. A review of recorded data from the automated weather observation station located about 5 nautical miles west of the accident airport revealed that, about 42 minutes before the accident, the wind was from 200° at 18 knots, gusting to 28 knots. The takeoff direction is unknown.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, during takeoff, the "wind got more gusty than [he] could handle being too low and slow". The airplane aerodynamically stalled and impacted the ground. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. A review of recorded data from the automated weather observation station located about 5 nautical miles west of the accident airport reported that, about 42 minutes before the accident, the wind was from 200° at 18 knots, gusting to 28 knots. The takeoff direction is unknown.

Aircraft

Registration
UNREG
Reported as
CGS Hawk
Category
Airplane, amateur-built
Serial number
Unknown
Built
1984
Airframe hours
400
Engine
Rotax 503, 45 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
None
Last inspection
Unknown · March 1, 2017
Departed
9OH6 · Findlay, OH
Destination
9OH6 · Findlay, OH
Airport
9OH6 · Weaver, runway unkn, 2,200 × 70 ft, grass/turf
Equipment
None

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
79
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Single
Restraint
4-point
Flight hours
1,100 total · 300 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 18 knots, gusting 28
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 55 °F
Altimeter
29.80 inHg
Observed at
KFDY, 5 nm away

Docket · 2

The files NTSB released with the investigation on November 8, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 MB in all.