Ayres S2R-600 N40145
26 May 1990 · Vero Beach, Florida, United States · Minor injuries
Summary
On 26 May 1990 at about 13:30 local time, a Ayres S2R-600 registered N40145, operated by Sunniland Aircraft Sales, Inc., was involved in an accident near Vero Beach, Florida, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 13:30
- Classification
- Accident
- Location
- Vero Beach, Florida, United States
- Coordinates
- 27.6400, -80.3892
- Aircraft
- Ayres S2R-600
- Registration
- N40145
- Category
- Airplane
- Engines
- 1
- Operator
- Sunniland Aircraft Sales, Inc.
- Operating rule
- Part 137: Agricultural
- Purpose of flight
- Aerial Application
- Phase of flight
- Not recorded
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- MIA90LA134
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 1 | 0 |
Probable cause
THE OPERATION OF THE AIRPLANE WITH AN UNAIRWORTHY PROPELLER BY THE OPERATOR.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
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.
Quoted verbatim from the NTSB record.
Other Ayres S2R accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 26 Sep 1990 | Ayres S2R-T34 | Thornton, Mississippi, United States | - | Fatal | 1 |
| 15 Jun 1990 | Ayres S2R | McGregor, Texas, United States | - | No injuries | - |
| 27 Jul 1991 | Ayres S2R | Visalia, California, United States | Gilbert Aviation Industries | Serious injuries | - |
| 2 May 1991 | Ayres S2R-T34 | Wheatley, Arkansas, United States | Christopher Broughton | Fatal | - |
| 20 Jul 1991 | Ayres S2R | Drayton, North Dakota, United States | Bonanza Valley Aviation, Inc. | No injuries | - |
| 7 Aug 1991 | Ayres S2R | Drayton, North Dakota, United States | Dakota Aviation, Inc. | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 6 Jan 1990 | Lockheed L1329 | Miami, Florida, United States | Tokoph, David | Fatal | 1 |
| 12 Dec 1990 | Cessna 172G | Jacksonville, Florida, United States | Weeks, Milton D. | Serious injuries | - |
| 6 Jan 1990 | Piper PA-30 | Tallahassee, Florida, United States | Calley, Nicholas O. | Serious injuries | - |
| 12 Dec 1990 | Piper PA-28-151 | Jupiter, Florida, United States | Zimmerman, Barry L. | No injuries | - |
| 20 Jan 1990 | Piper J-3 | Clewiston, Florida, United States | Nesbitt, James K. | Fatal | 2 |
| 15 Dec 1990 | Beechcraft F33A | Lakeland, Florida, United States | Globe Aero Ltd. | No injuries | - |