Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Vero Beach, Florida 32960
Saturday, May 26, 1990 9:30 EDT
NTSB Narrative Summary Released at Completion of Accident
THE PLT STATED THAT WHILE MANEUVERING, HE FELT A SEVERE VIBRATION. HE DUMPED THE CHEMICAL & DURING THE FORCED LANDING, COLLIDED WITH TREES BEFORE COMING TO REST. EXAM OF THE ACFT REVEALED THAT THE NO. 2 PROP BLADE COUNTERWEIGHT BEARING SHAFT FAILED DUE TO FATIGUE. ACCORDING TO THE METALLURGIST, THE FATIGUE WAS DUE TO BENDING STRESS WHICH WAS CAUSED BY EXCESSIVE CLEARANCE BETWEEN THE SHAFT & THE BUSHED HOLE IT WAS POSITIONED IN. THIS ALLOWED CENTRIFUGAL FORCE TO POSITION THE BLADE TO HIGH PITCH, RESULTING IN UNEQUAL THRUST. THE PROP WAS OVERHAULED IN 1987 BUT THE TOTAL TIME SINCE THAT TIME COULD NOT BE DETERMINED. THE PROP WAS REPAIRED ABOUT 10 WEEKS PRIOR TO THE ACCIDENT BUT HAD ONLY ACCUMULATED 3.4 HRS SINCE THE REPAIR. ACCORDING TO THE PROP OVERHAUL FACILITY GENERAL MGR, THE PROP WAS RETURNED TO THE OPERATOR AFTER THE ACCIDENT BUT THE APPROVED FOR SERVICE LINE ON THE WORK ORDER WAS NOT SIGNED. ACCORDING TO THE CHIEF INSPECTOR OF THE REPAIR FACILITY, FURTHER INSP WAS NECESSARY TO DETERMINE IF THE PROP WAS AIRWORTHY.
NTSB Probable Cause Narrative
THE OPERATION OF THE AIRPLANE WITH AN UNAIRWORTHY PROPELLER BY THE OPERATOR.
Event Information
| Type of Event | Accident |
| Event Date | 5/26/1990 |
| Event Day of the Week | Saturday |
| Time of Event | 930 |
| Event Time Zone | Eastern Daylight Time |
| Event City | VERO BEACH |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 32960 |
| Event Date Year | 1990 |
| Event Date Month | 5 |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 0 |
| 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) | 90 |
| Weather Observation Facility ID | VRB |
| Elevation of weather observation facility | 25 |
| Distance of event from weather observation facility (units?) | 10 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 3000 |
| Lowest Non-Ceiling Height | 1500 |
| 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) | 7 |
| Air Temperature at event time (in degrees celsius) | 28 |
| Dew Point at event time (in degress fahrenheit) | 22 |
| Wind Direction (degrees magnetic) | 120 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 16 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 1500 |
| 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 | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 528 |
| NTSB Notification Source | -- |
| NTSB Notification Date | May 26 1990 12:00AM |
| NTSB Notification Time | 1035 |
| Fiche Number and/or location -used to find docket information | 41490 |
| Date of most recent change to record | Dec 12 2000 4:59PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N40145 |
| NTSB Number | MIA90LA134 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Ayres |
| Aircraft Model | S2R-600 |
| Aircraft Series Identifier | S2R-600 |
| Aircraft Serial Number | 2558R |
| Certified Max Gross Weight | 6200 |
| 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 | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | May 11 1990 12:00AM |
| Airframe hours since last inspection | 4 |
| Airframe Hours | 4006 |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | SUNNILAND AIRCRAFT SALES, INC |
| Aircraft Owner Street Address | 144 S FAIRFIELD DR. |
| Aircraft Owner City | DOVER |
| Aircraft Owner State | DE |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 19901 |
| Operator is an individual? | -- |
| Operator Name | SUNNILAND AIRCRAFT SALES, INC. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | P.O. BOX 267 |
| Operator City | INDIANTOWN |
| Operator State | FL |
| Operator Country | |
| Operator Zip code | 34956 |
| Operator Code | |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Agriculture |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Unknown |
| Indicates Domestic or International Flight | Unknown |
| Operator carrying Pax/Cargo/Mail | Unknown |
| Type of Flying (Per_Bus / Primary) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 923 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | 0 |
| Runway Width | 0 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |