# NTSB MKC84LA073: Aeronca 7AC, N83032, Lawrence, KS, February 13, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 13, 1984, 10:30 local (16:30 UTC)
- Place: Lawrence, KS
- Coordinates: 39.019325, -95.209014 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.0193&lon=-95.2090&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33629
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA073
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33629/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA073

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - flight controls - improper use of, dual student (cause)
  - lack of total experience, dual student (contributing factor)
  - supervision - inadequate, pilot in command(cfi) (cause)
  - directional control - not maintained, dual student (cause)
  - ground loop/swerve - inadvertent, dual student
  - remedial action - delayed, pilot in command(cfi)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch (contributing factor)

## Analysis

THE DUAL STUDENT ALLOWED THE ACFT TO PORPOISE & YAW AND LOST CONTROL OF THE ACFT AS IT VEERED INTO A DITCH. THE CFI ON BOARD TRIED TO CORRECT THE SITUATION WITH RUDDER AND THROTTLE BUT WAS UNSUCESSFUL IN THE ATTEMPT.

## Aircraft

- Registration: [N83032](https://openairdocs.org/aircraft/N83032), registered now, S/N 7AC-1688 (OpenAirDocs)
- Reported make and model: AERONCA 7AC
- Registry model: [Aeronca 7AC](https://openairdocs.org/model/aeronca-7ac) (registry code 2110102) (OpenAirDocs)
- Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1688
- Airframe hours: 2230
- Engines: CONTINENTAL C-65 65 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Capitol Airservice
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 3, 1983, 63 hours before
- Departed: 3LA, LAWRENCE, KS
- Airport: 3LA, Lawrence Municipal, runway 19, 3,900 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 1,511 total, 55 in this make and model, 1,417 as pilot in command, 154 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 9 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 39 °F, dew point 30 °F
- Altimeter: 29.00 inHg
- Observed at: TOP, 22 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 19840213003289A](https://openairdocs.org/incident/19840213003289A), Feb 13, 1984: Bbavia 7AC, Lawrence, KS, Substantial damage. Instructor pilot allowed student to make hard landing that became uncontrollable resulting in crash.

## Other investigations on N83032 (1)

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.

- [NTSB CEN20CA120](https://openairdocs.org/ntsb/CEN20CA120), Mar 11, 2020: Aeronca 7AC (N83032), Ankeny, IA, substantial damage. Probable cause: The pilot's improper starting procedure, which allowed the airplane to move forward over the wheel chocks and impact him and a hangar when he subsequently hand propped the engine.

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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