# NTSB CHI82DA247: Aero Commander S2R, N3690X, Graceville, MN, July 14, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 14, 1982, 14:05 local (19:05 UTC)
- Place: Graceville, MN
- Location: 45.5687° N, 96.4372° W: Placed by OpenAirDocs: center of Graceville, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5687&lon=-96.4372&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 14, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70856
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI82DA247
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70856/pdf
- Page: https://openairdocs.org/ntsb/CHI82DA247

## Sequence of events

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

- Loss of control - in flight, maneuvering - aerial application
  - weather condition - gusts (contributing factor)
  - terrain condition - high obstruction(s) (contributing factor)
  - maneuver - performed, pilot in command
  - airspeed - inadequate, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT WAS ON AN AERIAL APPLICATION FLIGHT TO A FIELD WITH POWER LINES ALONGSIDE. THE WIND WAS REPORTED TO BE FROM THE SOUTHEAST A 6, GUSTING 11 KTS. THE PILOT SAID THAT HE ENCOUNTERED "DEAD AIR" WHILE HE WAS IN HIS FOURTH PORCEDURE TURN. DUE TO THE PROXIMITY OF THE POWER LINES, HE ADDED POWER AND STEEPENED HIS TURN. SUBSEQUENTLY, THE PLANE STALLED AND THE LEFT WING CONTACTED THE GROUND. THE AIRCRAFT CARTWHEELED AND WAS DAMAGED BEYOND ECONOMICAL REPAIR.

## Aircraft

- Registration: [N3690X](https://openairdocs.org/deregistered/N3690X-2012-12-11), registration cancelled 2012-12-11, S/N 1908R, built 1974 (OpenAirDocs)
- Reported make and model: AERO COMMANDER S2R
- Registry model: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1908R
- Airframe hours: 2550
- Engines: P&W R-1340-AN-1 600 horsepower reciprocating
- Damage: Destroyed
- Fire: Unknown
- Flight: Aerial application, Part 137
- Operator: Graceville Air Service
- Registered owner: Graceville Air Service
- Departed: GRACEVILLE, MN
- Destination: GRACEVILLE, MN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 3,722 total, 1,933 in this make and model, 88 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 6 knots
- Visibility: 15 statute miles
- Temperature: 185 °F

## 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 19820714028949A](https://openairdocs.org/incident/19820714028949A), Jul 14, 1982: Ayres S2RRESTD, Graceville, MN, Destroyed. Aircraft encountered downdraft during spray run, pilot stalled aircraft trying to avoid wires.

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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