Zephyrhills Municipal Airport
Aircraft Accident/Incident Report

Zephyrhills, Florida 33539
Saturday, September 16, 2000 10:00 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot noted the airplane was not climbing as expected and a decreased engine rpm. He checked the throttle and mixture controls then with obstructions ahead, intentionally stalled the airplane; a hard landing resulted. The mixture control arm was in the idle cutoff position and the mixture control cable was fractured aft of the mixture control arm. A bracket near the carburetor securing the mixture cable was displaced to the left 1.5 inches. The swivel assembly in the mixture control arm was installed upside down. Post accident, the engine was operated to 2,300 rpm. Both ends of the flame tube of the muffler were found separated following the engine run. One of the flame tube ends was impact damaged; portions of the fracture surfaces on both flame tube ends had a relatively shiny appearance. Wear and fatigue noted on the mixture control cable adjacent to the fracture area; bending overstress to the right on the remaining fracture surface. The mixture control cable had not been replaced since airplane manufacture in 1974. The airplane had accumulated 2,246 hours since then, 44 hours since the last annual inspection 11 months earlier, and 408 hours since an overhauled muffler was installed.

NTSB Probable Cause Narrative

the intentional stall/mush by the pilot-in-command due to obstructions ahead resulting in a hard landing. Contributing to the accident was the partial loss of engine power due to fuel starvation caused by wear, fatigue, then overstress separation of the mixture control cable resulting in the mixture control arm moving to the idle cutoff position.

Event Information

Type of Event Accident
Event Date 9/16/2000
Event Day of the Week Saturday
Time of Event 1000
Event Time Zone Eastern Daylight Time
Event City ZEPHYRHILLS
Event State FLORIDA
Event Country --
Zipcode of the event site 33539
Event Date Year 2000
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport ZEPHYRHILLS MUNICIPAL
Event Location Nearest Airport ID ZPH
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 13
Airport Elevation 90
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 950 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 17
Weather Observation Facility ID LAL
Elevation of weather observation facility 142
Distance of event from weather observation facility (units?) 151
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 15000
Lowest Non-Ceiling Height 7000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 12
Air Temperature at event time (in degrees celsius) 79
Dew Point at event time (in degress fahrenheit) 73
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None 2
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 10704
NTSB Notification Source FAA Atlanta Comm Center
NTSB Notification Date Sep 16 2000 12:00AM
NTSB Notification Time 1223
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Oct 9 2001 3:21PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7196L
NTSB Number MIA00LA263
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 Grumman
Aircraft Model AA-5
Aircraft Series Identifier AA-5
Aircraft Serial Number AA5-0496
Certified Max Gross Weight 2200
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 26 1999 12:00AM
Airframe hours since last inspection 44
Airframe Hours 2246
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name POSITIVE ATTITUDES, INC.
Aircraft Owner Street Address 5202 FOURTH STREET
Aircraft Owner City ZEPHYRHILLS
Aircraft Owner State FL
Aircraft Owner Country
Aircraft Owner Zipcode 33541
Operator is an individual? --
Operator Name ARTHUR L. SCHAER
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1650 COQUI CT.
Operator City ODESSA
Operator State FL
Operator Country
Operator Zip code 33556
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 Yes
Departure Airport Code ZPH
Departure City
Departure State
Departure Country
Departure Time 959
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code LEE
Destination City LEESBURG
Destination State FL
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 15 2001 4:00AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 4
Runway Length 5001
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --