# NTSB MKC82DA092: Cessna 188B, N21722, Thornton, IA, June 1, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 1, 1982, 06:55 local (11:55 UTC)
- Place: Thornton, IA
- Coordinates: 42.939395, -93.379669 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.9394&lon=-93.3797&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 1, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72815
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC82DA092
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72815/pdf
- Page: https://openairdocs.org/ntsb/MKC82DA092

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - weather condition - turbulence,clear air (contributing factor)
  - object - wire,transmission (contributing factor)
  - clearance - misjudged, pilot in command (cause)
  - wing - foreign object damage (contributing factor)
  - flight control,aileron - jammed (contributing factor)

## Analysis

WHILE SPRAYING A CORN FIELD, THE PILOT CROSSED UNDER A POWERLINE AT THE NORTH END OF THE FIELD. WHILE PASSING BENEATH THE LINES, HIS LEFT WING TIP STRUCK THE BOTTOM WIRE. THE PILOT REPORTED THAT HE LOST AILERON CONTROL AND LANDED IN A CORN FIELD WITH NO ADDITIONAL DAMAGE. ALSO, HE REPORTED THAT THERE WAS MODERATE TURBULENCE AND HE ESTIMATED THE WIND FROM THE NORTHWEST AT ABOUT 10 KNOTS.

## Aircraft

- Registration: N21722 (not matched to a registry record)
- Reported make and model: CESSNA 188B
- Category: Airplane
- Serial number: 1880098T
- Airframe hours: 1677
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Two State Flying Service Inc
- Registered owner: Two State Flying Service Inc
- Departed: SHEFFIELD, IA
- Destination: SHEFFIELD, IA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; commercial; airplane ratings: multi-engine land, single-engine land; medical: class 2, valid medical--w/ waivers/lim; flight hours: 3,300 total, 350 in this make and model, 33 in the last 90 days, 33 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 315° at 10 knots
- Visibility: 20 statute miles
- Temperature: 140 °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 19820601020119A](https://openairdocs.org/incident/19820601020119A), Jun 1, 1982: Cessna 188B, Thornton, IA, Substantial damage. Aircraft wing hit wires as ag pilot attempted to fly underneath them.

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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