- Date
- May 26, 2002, 10:24 local (14:24 UTC)
- Place
- Manville, NJ
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N8121MMiller Barnet J4B-2
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 13, 2003
- Report
- Approved by Office Director
- Parties
- FAA
- FAA report
- 20020526010489A
- Case key
- 54804
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 improper flare prior to touchdown. A factor was the pilot's lack of experience in aircraft type, make, and model.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The pilot of the gyrocopter had conducted several touch and go's on the runway. On his last approach, he aligned the gyrocopter with the grass apron, and elected to continue on his heading to land on the grass adjacent to the runway. Witnesses described the approach as "fast" and "odd" and that the gyrocopter pitched nose-down before hitting the ground and rolling over. The pilot had 200 hours of flight experience. He did not possess a rating or a student endorsement for rotorcraft/gyrocopter, and had no experience in make and model. The pilot reported that there were no mechanical anomalies with the gyrocopter.
Factual narrative
On May 26, 2002, at 1024 eastern daylight time, a homebuilt Barnett J4B-2 gyrocopter, N8121M, was substantially damaged during a landing at Central Jersey Regional Airport (47N), Manville, New Jersey. The certificated private pilot/owner received minor injuries. Visual meteorological conditions prevailed and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91.
A pilot-rated witness stated that he watched the gyrocopter as it flew traffic patterns around the airport, and on the accident flight. He observed the flight of the gyrocopter from the parking ramp as he secured an airplane. During the last approach, the gyrocopter approached the grass area adjacent to runway 25 during an "odd, step-down" approach. The gyrocopter leveled off at 200 feet, reduced power, dove down and leveled off at 100 feet, reduced power, then leveled off at 50 feet. The last time the power was reduced, the gyrocopter pitched to a nose-down attitude and flew straight into the ground with no landing flare. The witness described the engine noise as "solid", with no sputtering or missing.
A second witness said he had seen the gyrocopter perform takeoffs, landings, and traffic-pattern flights earlier in the day, and was walking out to his airplane when he noticed the gyrocopter approach the grass for a landing. The gyrocopter crossed abeam the landing threshold of the runway about 200 feet above the ground. The approach was fast, and the gyrocopter landed down at the departure end of the airfield. The gyrocopter rolled over as soon as it made contact with the ground. When asked about the sound of the engine, the witness said it sounded "fine."
According to a third witness, who managed the local flight school, the gyrocopter had flown the length of the field at low altitude, landed, and taxied back several times prior to the accident. He did not see the accident flight, but heard the gyrocopter make contact with the ground. He then drove to the accident site to assist the pilot.
The pilot had performed taxi tests of the gyrocopter during the weekend. When asked if they were post-maintenance tests, he said no. According to the pilot, he was conducting taxi tests on Saturday and Sunday. He had never really flown the gyrocopter before, and was in the process of getting it ready to fly. He added that he didn't mean to get airborne during the tests. On the last run, he took off on runway 25, but didn't think there was enough room to land, so he decided to go around. He flew crosswind, downwind, and base-to-final legs.
When the pilot was asked if he was aligned with the paved runway when he turned from base leg to final, he replied that when he completed the turn, he was aligned with the grass apron, and elected to continue on his heading to land on the grass adjacent to the runway. When he did, he touched down in a hole, or he bounced, and the gyrocopter rolled over. When asked about the performance and handling of the gyrocopter, the pilot said, "It was very, very good."
The gyrocopter was examined at the scene by Federal Aviation Administration inspectors. One of the inspectors stated that there were no mechanical anomalies.
The pilot held a private pilot certificate with an airplane single engine land rating. He did not possess a rating or a student endorsement for rotorcraft/gyrocopter.
The pilot reported about 200 hours of total flight experience, none of which was in the accident gyrocopter. He added that he had flown an ultra-light gyrocopter for about two years.
The weather reported at Somerville, New Jersey, about 7 miles northwest of Manville, included calm winds with 9 miles of visibility.
Aircraft
- Registration
- N8121M
- Reported as
- Miller Barnet J4B-2
- Category
- Gyroplane, amateur-built
- Serial number
- 368-2
- Airframe hours
- 45
- Engine
- Subaru EA-82, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Thomas K. Dempsey
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Continuous airworthiness · March 18, 2000 · 45 hours before
- Departed
- 47N · Manville, NJ
- Destination
- 47N · Manville, NJ
- Airport
- 47N · Dummy, runway 25, 3,509 × 50 ft, grass/turf
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
- 60
- Injuries
- Minor
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Last flight review
- January 14, 2002
- Seat
- Center
- Flight hours
- 200 as pilot in command · 30 in the last 90 days · 20 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 9 statute miles
- Lowest ceiling
- 1,300 ft overcast
- Temperature
- 59 °F, dew point 55 °F
- Altimeter
- 30.13 inHg
- Observed at
- SMQ, 7 nm away
Docket · 6
The files NTSB released with the investigation on April 1, 2003, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.8 MB 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.