# NTSB MIA93LA176: Schweizer G-164B, N8451K, Immokalee, FL, August 16, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 16, 1993, 08:30 local (12:30 UTC)
- Place: Immokalee, FL
- Location: 26.4240° N, 81.4216° W: Placed by OpenAirDocs: center of Immokalee, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=26.4240&lon=-81.4216&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 26, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 33285
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA93LA176
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33285/pdf
- Page: https://openairdocs.org/ntsb/MIA93LA176

## Probable cause

THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN AIRSPEED (VS) WHILE MANEUVERING RESULTING IN A STALL/MUSH.

## Sequence of events

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

- In flight collision with object, maneuvering - turn to reverse direction
  - object - tree(s)
  - airspeed - not maintained, pilot in command (cause)
  - stall/mush - encountered, pilot in command
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - ground

## Analysis

THE COMMERCIAL PILOT HAD JUST COMPLETED AN AERIAL APPLICATION SPRAY RUN TO THE SOUTH, AND WAS MANEUVERING BACK TOWARDS THE WEST BEGINNING TO LEVEL OUT AT ABOUT 100 FEET AGL, WHEN THE AIRPLANE FELT MUSHY AND STARTED TO SETTLE INTO THE TREES. THE CHEMICAL LOAD WAS JETTISONED AND FULL POWER WAS APPLIED; HOWEVER, THE AIRPLANE COLLIDED WITH TREES AND CRASHED. REVIEW OF THE PILOTS OPERATING HANDBOOK INDICATES THE POWER OFF STALL SPEED TO BE 60 MPH. THE PILOT STATED HIS AIRSPEED AT THE TIME OF COLLISION WITH THE TREES WAS ESTIMATED TO BE ABOUT 60 TO 65 IAS.

## Aircraft

- Registration: [N8451K](https://openairdocs.org/deregistered/N8451K-2003-05-14), registration cancelled 2003-05-14, S/N 700 B, built 1982 (OpenAirDocs)
- Reported make and model: SCHWEIZER G-164B
- Registry model: [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b) (registry code 8059055) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 700B
- Airframe hours: 9089
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Airwork Ent Of Florida Inc.
- Registered owner: Airwork Ent Of Florida Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, July 1, 1993, 31 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 3,700 total, 800 in this make and model, 3,636 as pilot in command, 100 in the last 90 days, 40 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 4 knots
- Lowest ceiling: 15,000 ft broken
- Temperature: 82 °F, dew point 79 °F
- Altimeter: 30.00 inHg
- Observed at: RSW, 15 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 19930816049339A](https://openairdocs.org/incident/19930816049339A), Aug 16, 1993: Scwzer G164B, Immokalee, FL, Substantial damage. Too slow after spray run turn around. Stall mushed into trees.

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.

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