CEN14LA371

NTSB accident investigation · Air Command 532 · Petersburg, MI · July 10, 2014

Accident · FatalLimited investigationFinal report
Date
July 10, 2014, 17:30 local (21:30 UTC)
Place
Petersburg, MI
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
UNREGAir Command 532
Defining event
Maneuvering: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report September 14, 2016
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA, East Michigan FSDO
Case key
89678

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 noncertificated pilot’s failure to maintain control of the gyroplane following a total loss of engine power due to a loose spark plug.

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.

Ignition system: spark plugs/ignitersAircraft › Aircraft power plant · Incorrect service/maintenanceAll aircraft: 38 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll aircraft: 9,295 casesProbable cause
Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 1,269 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 pilot, who had an expired student pilot certificate, was conducting a personal local area flight in the unregistered amateur-built gyroplane. An acquaintance of the pilot reported that the pilot had arrived at the departure airport with the gyroplane on a trailer; however, the pilot did not mention that he intended to fly that evening. There were no witnesses to the accident flight. The gyroplane wreckage was discovered the following morning in a potato field about 1/4 mile east of the departure airport. A postaccident examination of the gyroplane did not reveal any airframe or flight control anomalies that would have prevented normal operation. One of the main rotor blades had separated from the mast hub assembly; however, the observed damage to the rotor blade was consistent with ground impact. Examination of the two-cylinder, two-stroke, engine revealed that the forward spark plug was loose and could be removed by hand. No additional preimpact anomalies were noted with the engine that would have prevented its normal operation. It is likely that the loose spark plug resulted in a loss of cylinder compression and a total loss of engine power. During the subsequent forced landing, the gyroplane impacted terrain and tumbled about 30 ft. The wreckage debris path was consistent with an uncontrolled collision with terrain. A review of aircraft registry records established that the amateur-built gyroplane did not have an airworthiness certificate or registration number. Further, there was no maintenance documentation for the gyroplane. The pilot did not possess a valid pilot certificate; his student certificate had been expired for more than 9 years. Additionally, a pilot logbook was not located during the investigation, which precluded a review of the pilot's recent flight experience and total time in the accident gyroplane.

Factual narrative

A review of FAA aircraft registry records established that the amateur-built gyroplane did not have an airworthiness certificate or registration number. The single-seat gyroplane was powered by a Rotax model 532 engine, serial number 3671761. No maintenance documentation was located during the investigation. The Lada Airport (7MI5) is a privately owned airport located about 2 miles southeast of Petersburg, Michigan. The airport field elevation was 678 feet mean sea level (msl). The airport has two runways: runway 9/27 (2,650 feet by 125 feet, grass/turf); runway 18/36 (2,580 feet by 200 feet, grass/turf). On July 10, 2014, about 1730 eastern daylight time, an unregistered amateur-built Air Command model 532 gyroplane was substantially damaged when it impacted terrain while maneuvering near Lada Airport (7MI5), Petersburg, Michigan. The pilot, who had an expired student pilot certificate, was fatally injured. The gyroplane was owned and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 without a flight plan. Day visual meteorological conditions prevailed for the local flight that departed 7MI5 at an unknown time. An acquaintance of the pilot reported that the pilot arrived at the departure airport around 1700 with the gyroplane on a trailer; however, the pilot did not mention that he intended to fly that evening. There were no witnesses to the accident flight. On the morning of July 11, 2014, the gyroplane wreckage was discovered in a potato field about 1/4 mile east of the departure airport. On July 12, 2014, an autopsy was performed on the pilot at the Wayne County Medical Examiner's Office located in Detroit, Michigan. The cause of death was attributed to multiple blunt-force injuries that were sustained during the accident. Toxicological testing was completed by NMS Labs located in Willow Grove, Pennsylvania. The toxicological test results were negative for ethanol and drugs of abuse. At 1735, the automated surface observing system (ASOS) located at Toledo Suburban Airport (DUH), about 9 miles south of the accident site, reported the following weather conditions: wind from 120 degrees at 5 knots, visibility 10 miles, clear sky, temperature 25 degrees Celsius, dew point 14 degrees Celsius, and an altimeter setting of 30.14 inches of mercury. According to Federal Aviation Administration (FAA) airman records, the pilot did not possess a valid pilot certificate. On October 25, 2002, he was issued a student pilot certificate in conjunction with a third-class medical certificate. When applying for the medical certificate, the pilot reported having 45 hours total flight time, of which 22 hours had been accumulated during the preceding 6 months. The student pilot certificate subsequently expired in October 2004. The pilot's flight logbook was not located during the investigation, which precluded a review of his recent flight experience and total time in the accident gyroplane. The gyroplane wreckage was located in apotato field about 1/4 mile east of the departure airport. A wreckage debris path originated from the initial point-of-impact on a northerly heading and measured about 30 feet long. All airframe components were located along the wreckage debris path or amongst the main wreckage. Flight control continuity could not be established due to the extent of the damage; however, all observed flight control system discontinuities were consistent with overstress. One of the two main rotor blades had separated from the mast hub assembly; however, the observed damage to the rotor blade was consistent with ground impact. Examination of the engine revealed that the forward spark plug of the two-cylinder, two-stroke, Rotax model 532 engine was loose and could be removed by hand without the aid of any tools. No additional preimpact anomalies were noted with the engine that would have prevented its normal operation. Additionally, the throttle was found in the full-aft position, there was the smell of automobile fuel present at the accident site, and the 3-blade propeller exhibited minor damage.

Aircraft

Registration
UNREG
Reported as
Air Command 532
Category
Gyroplane, amateur-built
Serial number
Uknown
Engine
Rotax 532, 64 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
None
Departed
7MI5 · Petersburg, MI
Destination
7MI5 · Petersburg, MI
Airport
7MI5 · Lada Airport
Equipment
None

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
69
Injuries
Fatal
Certificate
Student
Medical
Class 3, With waivers/limitations
Seat
Single
Restraint
Lap only
Toxicology
Performed
Flight hours
45 total

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 57 °F
Altimeter
30.13 inHg
Observed at
DUH, 9 nm away

Docket · 7

The files NTSB released with the investigation on July 6, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.