ERA09LA454

NTSB accident investigation · Pongracz John M Nieuport 1 · Brasstown, NC · August 10, 2009

Accident · FatalLimited investigationFinal report
Date
August 10, 2009, 10:30 local (14:30 UTC)
Place
Brasstown, NC
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N112PMPongracz John M Nieuport 1
Defining event
Initial climb: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report October 21, 2010
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA / FSDO
FAA report
20090810048189A
Case key
74481

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 during climb after takeoff, resulting in an inadvertent stall.

Findings · 2

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.

Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedPongracz John M NIEUPORT 11: 1 caseAll aircraft: 1,681 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 accident flight was the initial flight of the experimental, amateur-built airplane. Witnesses observed the airplane departing south toward rising terrain. The normal departure procedure for that private grass strip was to depart toward the north, where the terrain descended. The airplane was observed in a normal takeoff roll before becoming airborne and, about 300 feet above the ground, pitching up before coming straight down. The airplane impacted the ground nose first, coming to rest on its back side in a pasture adjacent to the right side of the grass strip. A postcrash fire ensued. The airplane’s engine was heard at full power until impact. The responding Federal Aviation Administration inspector established flight control continuity to all the flight controls. The engine exam did not reveal any discrepancy that would have prevented the engine from producing power.

Factual narrative

HISTORY OF FLIGHT On August 10, 2009, at 1030 eastern daylight time, an experimental, amateur built, Pongracz, Nieuport 11, impacted terrain shortly after takeoff from a private grass strip in Brasstown, North Carolina. The certificated commercial pilot was killed and the airplane incurred substantial damage. Visual meteorological conditions prevailed and no flight plan was filed. The airplane was operated by a private individual, under the provisions of 14 Code of Federal Regulations Part 91, as a personal flight. Witnesses stated to the responding Federal Aviation Administrator (FAA) inspector that it was the pilot/owner’s initial flight with the airplane. They observed the airplane departing toward the south into rising terrain. The witnesses advised that the normal departure procedure for that grass strip was to depart toward the north, where the terrain descended. The airplane was observed to make a normal takeoff roll. The airplane became airborne and when it was about 300 feet above the ground, it pitched up and then went straight down. The airplane impacted the ground nose first, coming to rest on its back side in a pasture adjacent to the right side of the grass strip. A fire ensued immediately after impact. The airplane’s engine was heard to be at full power until ground impact. PERSONNEL INFORMATION The pilot held a commercial pilot certificate, with ratings for airplane single engine land and multi-engine land with instrument airplane, and held a flight instructor certificate, with a rating for single engine land. The pilot’s last medical certificate was issued in July of 2008; a third-class. He reported a total of 500 flight hours at that time. AIRCRAFT INFORMATION The amateur built airplane was issued an experimental airworthiness certificate on October 29, 2008. The single seat, bi-wing, airplane was of tubular structural with fabric skin design . The airplane was powered by a Volkswagen, VW835CC , 60 horsepower rated engine. At the time of the accident the airplane had accumulated less than 1 hour of total flight time and was on its initial flight. METEOROLOGICAL INFORMATION The Andrews-Murphy Airport, Andrews, NC, located 11 miles northeast of the accident site, August 10, 2009, 1039 automatic surface weather observation was: wind calm, visibility 10 miles, sky clear, temperature 27 degrees Celsius ( C ), dew point temperature 21 degrees C and altimeter 30.25 inches of mercury. WRECAKGE AND IMPACT INFORMATION Both blades on the wood propeller separated at the base of the crankshaft attachment point. Both wings of the bi-wing structure were bent and distorted from the impact forces. The cockpit section was crushed inward and distorted. The engine and cockpit area incurred thermo damage from the fire. Several sections of the airplane’s fabric skin were burnt away. Most of the empennage structure remained intact. The responding FAA inspector established flight control continuity to all the flight controls. The engine exam did notreveal any discrepancies that would have prevented the engine from producing power. MEDICAL AND PATHOLOGICAL INFORMATION The North Carolina Baptist Hospitals, Inc, Wake Forest University School of Medicine, Department of Pathology, Winston-Salem, North Carolina, conducted a postmortem examination of the pilot. The cause of death of the pilot was blunt forces trauma along with thermal injuries. Postmortem toxicology tests were performed by the FAA Forensic Toxicology Laboratory, Oklahoma City, Oklahoma, on specimens obtained from the pilot. The tests were negative for carbon monoxide, cyanide, ethanol, and drugs. The tests were positive for acetaminophen.

Aircraft

Registration
N112PM
Reported as
Pongracz John M Nieuport 1
Category
Airplane, amateur-built
Serial number
012
Airframe hours
1
Engine
Volkswagen VW 835 CC, 60 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
Brasstown, NC
Destination
Brasstown, NC
Airport
Private Strip

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
63
Injuries
Fatal
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Seat
Front
Toxicology
Performed
Flight hours
500 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 70 °F
Altimeter
30.25 inHg
Observed at
RHP, 11 nm away

Docket · 7

The files NTSB released with the investigation on July 28, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 600 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.