ATL84FU006

NTSB accident investigation · Ritz A · Tullahoma, TN · July 1, 1984

Accident · FatalFinal report
Date
July 1, 1984, 18:45 local (23:45 UTC)
Place
Tullahoma, TN
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
UNREGRitz A
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
6341

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

On this page

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.

Airframe/component/system failure/malfunctionManeuvering
Flight control,aileron - flutterCause
Design stress limits of aircraft - exceededPilot in commandCause
Acft/equip,inadequate designProduction/design personnelCause
Wing - separationCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The ultralight had been flown for 4 ftls and the plt upon landing mentioned a possible control problem with the owner and builder. The builder then took the vehicle up to show how fast it would go. After about 30 minutes of flt he dove atthe rwy in a full power shallow dive and entered a left turn at about 30 ft AGL. The right aileron was seen fluttering by a witness just before the right wing moved. A few seconds later, the left wing separated from the airframe. The acft crashed nose first and bounced about 40 ft from the initial impact point on the rwy.

Aircraft

Registration
UNREG
Reported as
Ritz A
Category
Ultralight, amateur-built
Serial number
NONE
Engine
Zenoah 250, 22 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 103
Registered owner
Gerald G. Ritz
Airport
THA · Tullahoma

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
68
Airplane ratings
Single-engine land
Medical
Class 3, Expired
Seat
Center
Toxicology
Performed

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 4 knots
Visibility
10 statute miles
Temperature
79 °F, dew point 61 °F
Altimeter
29.00 inHg
Observed at
BNA, 50 nm away