# NTSB MIA90LA146: Ayres S-2R, N4909X, Fort Pierce, FL, June 27, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 27, 1990, 08:00 local (12:00 UTC)
- Place: Fort Pierce, FL
- Location: 27.4256° N, 80.3404° W: Placed by OpenAirDocs: center of Fort Pierce, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=27.4256&lon=-80.3404&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32674
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA146
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32674/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA146

## Probable cause

ENGINE FAILURE DUE TO FAILURE OF THE ENGINE DRIVEN FUEL PUMP SHAFT DUE TO UNDETERMINED REASONS.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - mech failure/malf, maneuvering - turn to reverse direction
  - fuel system,pump - failure,total (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

WHILE MANEUVERING DURING AN AERIAL APPLICATION FLT, THE ENG QUIT, DUE TO THE TYPE OF CHEMICAL ABOARD, THE PLT WAS UNABLE TO DUMP IT & LANDED THE ACFT IN A FIELD. THE ACFT CAUGHT FIRE & WAS DESROYED. EXAM OF THE ENG REVEALED THAT THE ENG DRIVEN FUEL PUMP SHAFT FAILED. METALLURGICAL EXAM REVEALED THAT IT FAILED DUE TO OVERLOAD. ACCORDING TO THE OPERATOR, THE ENG WAS OVERHAULED ABOUT 98 HRS EARLIER BUT THE ENG DRIVEN FUEL PUMP WAS NOT. NO DETERMINATION COULD BE MADE AS TO THE TOTAL TIME ON THE PUMP OR THE TIME SINCE MAJOR OVERHAUL.

## Aircraft

- Registration: [N4909X](https://openairdocs.org/deregistered/N4909X-1999-05-26), registration cancelled 1999-05-26, S/N 2085R (OpenAirDocs)
- Reported make and model: Ayres S-2R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Category: Airplane
- Serial number: 2085R
- Airframe hours: 4059
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Sunniland Aircraft Sales, Inc.
- Registered owner: Sunniland Aircraft Sales, Inc
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 16, 1990, 98 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 7,000 total, 3,000 in this make and model, 6,700 as pilot in command, 150 in the last 90 days, 50 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 7 statute miles
- Lowest ceiling: 15,000 ft broken
- Temperature: 73 °F
- Altimeter: 30.00 inHg
- Observed at: FPR, 5 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19900627022689A](https://openairdocs.org/incident/19900627022689A), Jun 27, 1990: Ayres S2RR1340REST, Fort Pierce, FL, Destroyed. Engine quit,crashed and burned. Fuel pump shaft failed. Carburetor worn and dirty. Engine crankshaft was run out.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.