Aircraft Accident/Incident Report

Tangerine, Florida 32777
Tuesady, August 10, 1999 14:20 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot stated he was enroute to Mid Florida Airport, Eustis, Florida, when a partial power loss and the inability to hold altitude necessitated a precautionary landing. The pilot said he executed a landing with a left quartering tailwind due to utility lines and trees blocking an approach into the wind. The aircraft bounced, and on the second bounce the right landing gear bent and the wind lifted the left wing. The aircraft slid, and slowly nosed over, coming to rest upside down, resulting in substantial damage to the aircraft. According to the pilot, the reason for engine power loss was due to insufficient torque on the jam nut exhaust valve adjuster (rocker arm) to number 4 cylinder.

NTSB Probable Cause Narrative

the pilot's improper torqueing of a rocker arm adjusting jam nut, that resulted in the adjuster loosening, and a partial loss of engine power. This resulted in the pilot making an off airport precautionary landing and subsequent nose over, during which the aircraft received substantial damage.

Event Information

Type of Event Accident
Event Date 8/10/1999
Event Day of the Week Tuesday
Time of Event 1420
Event Time Zone Eastern Daylight Time
Event City TANGERINE
Event State FLORIDA
Event Country --
Zipcode of the event site 32777
Event Date Year 1999
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 30
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1358 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 150
Weather Observation Facility ID MCO
Elevation of weather observation facility 96
Distance of event from weather observation facility (units?) 27
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 3500
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 25
Dew Point at event time (in degress fahrenheit) 22
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 11
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 16
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 1500
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 633
NTSB Notification Source --
NTSB Notification Date Aug 10 1999 12:00AM
NTSB Notification Time 1600
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jan 10 2001 10:11AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N735BS
NTSB Number MIA99LA228
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name William John Schulz
Aircraft Model WJS JAYBIRD
Aircraft Series Identifier WJS JAYBIR
Aircraft Serial Number 001
Certified Max Gross Weight 660
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection --
Airframe hours since last inspection 5
Airframe Hours 5
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WILLIAM JOHN SCHULZ
Aircraft Owner Street Address 6314 HIGHLAND LAKES BLVD.
Aircraft Owner City LEESBURG
Aircraft Owner State FL
Aircraft Owner Country
Aircraft Owner Zipcode 34748
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code X61
Departure City ZELLWOOD
Departure State FL
Departure Country
Departure Time 1410
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code X55
Destination City EUSTIS
Destination State FL
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 10 2001 12:27PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --