ATL02LA009

NTSB accident investigation · Bass Moni · Locust Grove, GA · November 3, 2001

Accident · FatalLimited investigationFinal report
Date
November 3, 2001, 13:10 local (18:10 UTC)
Place
Locust Grove, GA
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N117JBBass Moni
Weather
Visual (VMC) · Day
Status
Completed · report February 25, 2003
Report
Approved by Office Director
Parties
FAA - Atlanta FSDO - 11
FAA report
20011103032199A
Case key
53723

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 airspeed during a low-altitude aerobatic maneuver, which resulted in an inadvertent stall/spin and subsequent uncontrolled descent into terrain.

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.

Loss of control - in flightManeuvering
Aerobatics - attemptedPilot in commandFactor
Airspeed - not maintainedPilot in commandCause
Stall - inadvertentPilot in command
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The aircraft executed a high-powered pass approximately 25 feet above ground level down runway 07, then performed an abrupt pull-up into steep climbing loop maneuver. About 200 to 300 feet above the ground, the aircraft was inverted at the top of the loop, then it rolled upright and entered what appeared to be a stall, followed by a spin, and collided with the ground. Two witnesses reported the engine "burped," while other witnesses reported the engine sounded as if it were running smoothly. Examination of the wreckage revealed the nose section was separated, and the wings displayed extensive perpendicular crush damage. Continuity was established from the cockpit controls to the flight control surfaces. Engine continuity was established and both cylinders exhibited compression when the engine was turned by hand.

Factual narrative

On November 3, 2001, at 1310 eastern standard time, a James E. Bass, Moni Motor Glider, N117JB, collided with the ground while maneuvering at Mallard's Landing, a private airstrip, in Locust Grove, Georgia. The aircraft was owned and operated by the pilot, and the personal flight was conducted under the provisions of Title 14 CFR Part 91 with no flight plan filed. Visual weather conditions prevailed at the time of the accident. The airplane sustained substantial damage, and the airline transport pilot received fatal injuries. The local flight departed Locust Grove, Georgia, at an undetermined time.

The aircraft and several others were participating in a fly-in at Mallard's Landing. According to witnesses, the aircraft executed a high-powered pass approximately 25 feet above ground level down runway 07, then performed an abrupt pull-up into steep climbing loop maneuver. About 200 to 300 feet above the ground, the aircraft was inverted at the top of the loop, then it rolled upright and entered what appeared to be a stall, followed by a spin, and collided with the ground in an 80-degree nose-low attitude. Two witnesses reported the engine "burped," while other witnesses reported the engine sounded as if it were running smoothly.

Examination of the accident site revealed wreckage debris was scattered over an area approximately 40 feet square in the back yard of a residence adjacent to the sod runway. Debris from the propeller spinner and cowling was embedded in the ground, and the propeller assembly was separated and found 30 feet from the main wreckage. The nose section was separated, and the wings displayed extensive perpendicular crush damage from the leading edge aft. Continuity was established from the cockpit controls to the flight control surfaces. Engine continuity was established and both cylinders exhibited compression when the engine was turned by hand. The carburetor was destroyed.

The Operator's Manual for the Rotax 447 engine states on Page 4-3, "This engine is not suitable for acrobatics (inverted flight, etc.)," and on Page 4-2, "Never fly the aircraft equipped with this engine at locations, airspeeds, altitudes, or other circumstances from which a successful no-power landing cannot be made after sudden engine stoppage."

The postmortem examination of the pilot was performed on November 4, 2001, by Dr. John B. Parker at the Henry County Medical Center Morgue in Stockbridge, Georgia. Blount force trauma The Forensic toxicology was performed by the FAA Toxicology and Accident Laboratory, Oklahoma City, Oklahoma. The tests were negative for carbon monoxide, cyanide, drugs and alcohol.

The aircraft maintenance logbooks were not recovered for examination.

Aircraft

Registration
N117JB
Reported as
Bass Moni
Category
Glider, amateur-built
Serial number
21
Engine
Rotax 447, 40 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
James E. Bass
Airworthiness certificate
Special, Experimental (Special)
Departed
GA04 · Locust Grove, GA
Airport
GA04 · Mallard's Landing, runway 07, 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
77
Injuries
Fatal
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Single
Toxicology
Performed
Flight hours
36,500 total

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
9,000 ft broken
Temperature
79 °F, dew point 52 °F
Altimeter
30.25 inHg
Observed at
FFC, 24 nm away

Docket · 3

The files NTSB released with the investigation on November 21, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 707 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.