WPR19TA009

NTSB accident investigation · Kreling Supercat · Three Rivers, MI · October 9, 2018

Accident · Serious injuriesFinal report
Date
October 9, 2018, 19:04 local (23:04 UTC)
Place
Three Rivers, MI
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
UNREGKreling Supercat
Defining event
Takeoff: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report December 16, 2019
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Adminstration FSDO
Case key
98511

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

On this page

Probable cause

The pilot's failure to maintain the proper pitch attitude and adequate airspeed during takeoff, which resulted in an aerodynamic stall.

Findings · 3

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: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 1,681 casesProbable cause
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 526 casesProbable cause

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 private pilot reported that he had just completed constructing the unregistered experimental, amateur-built airplane, and during takeoff for the airplane's first flight from the grass airstrip, he failed to maintain the proper pitch attitude and adequate airspeed, and the airplane experienced an aerodynamic stall. The airplane struck the ground nose down just beyond the end of the runway, which resulted in substantial damage to the forward fuselage. The pilot reported no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

On October 9, 2018, at 1904 eastern daylight time, an unregistered experimental amateur-built Supercat airplane collided with terrain after takeoff from Three Rivers Municipal Dr Haines Airport, Three Rivers, Michigan. The private pilot sustained serious injuries, and the airplane sustained substantial damage to the forward fuselage. The airplane was operated by the pilot/builder under the provisions of Title 14 Code of Federal Regulations Part 91 as a local personal flight. Visual meteorological conditions prevailed, and no flight plan had been filed. The flight was originating at the time of the accident.The pilot reported that he recently completed construction of the airplane, and although he had previously performed multiple high-speed taxi tests and "crow hops", this was to be the first flight. He stated that the takeoff runway was a 1,000-ft-long grass strip, adjacent and parallel to Runway 9. After warming up the engine, he taxied the airplane into position, and initiated the takeoff roll. The airplane lifted off after traveling about 1/4 of the runway length, and he stated that during the initial climb he failed to maintain the correct pitch attitude and adequate airspeed, and the airplane experienced an aerodynamic stall. The airplane struck the ground nose-down just beyond the end of the runway. The airplane was equipped with a Rotax 447 series two-stroke engine. The pilot indicated that he planned to register the airplane with the Federal Aviation Administration once he had established that it could be flown. He reported that there were no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation.

Aircraft

Registration
UNREG
Reported as
Kreling Supercat
Category
Airplane, amateur-built
Serial number
None
Built
2018
Airframe hours
0
Engine
Rotax 447, 38 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
None
Departed
HAI · Three Rivers, MI
Destination
HAI · Three Rivers, MI
Airport
HAI · Three Rivers Muni Dr Haines, runway 09L, 1,000 × 1,000 ft, grass/turf
Equipment
None

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
63
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Sport pilot
Seat
Single
Restraint
4-point
Flight hours
158.1 total · 0.1 in this make and model · 120.4 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 64 °F
Altimeter
29.96 inHg
Observed at
KHAI

Docket · 3

The files NTSB released with the investigation on February 12, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 MB in all.