# NTSB CHI87LA052: Cessna 172M, N12841, Middleton, WI, December 18, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: December 18, 1986, 16:35 local (22:35 UTC)
- Place: Middleton, WI
- Coordinates: 43.100017, -89.499916 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.1000&lon=-89.4999&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report March 10, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 13713
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI87LA052
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13713/pdf
- Page: https://openairdocs.org/ntsb/CHI87LA052

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - final approach
  - airspeed - not maintained, dual student (cause)
  - complacency, pilot in command(cfi) (contributing factor)
  - aircraft handling - improper, dual student (cause)
  - remedial action - delayed, pilot in command(cfi) (cause)
  - emergency procedure - simulated, pilot in command(cfi) (contributing factor)
- Undershoot, approach - vfr pattern - final approach
  - object - tree(s)
  - terrain condition - ditch

## Analysis

AT THE COMPLETION OF A PERIOD OF INSTRUMENT TRAINING AND WHILE RETURNING TO THE AIRPORT OF ORIGIN THE CFI ASKED THE PRIVATE RATED DUAL STUDENT TO DEMONSTRATE A SIMULATED FORCED LANDING TO THE RUNWAY. IN AN ATTEMPT TO LOSE ALTITUDE ON THE FINAL APPROACH THE DUAL STUDENT ALLOWED THE AIRSPEED TO DECAY DURING A SLIPPING MANEUVER AND THE AIRCRAFT STALLED. INSUFFICIENT ALTITUDE REMAINED TO ALLOW EITHER THE STUDENT OR THE CFI TO MAKE A RECOVERY BEFORE THE AIRCRAFT STRUCK SMALL TREES AND SLID THROUGH A DITCH. THE AIRCRAFT CAME TO REST SHORT OF THE RUNWAY.

## Aircraft

- Registration: [N12841](https://openairdocs.org/deregistered/N12841-1989-07-24), registration cancelled 1989-07-24, S/N 17262305 (OpenAirDocs)
- Reported make and model: CESSNA 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs)
- Category: Airplane
- Serial number: 17262305
- Airframe hours: 1423
- Engines: LYCOMING O-320E2D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: David Weiman
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 1, 1986
- Destination: C29, MOREY, WI
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land, single-engine sea; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 15,353 total, 500 in this make and model, 15,142 as pilot in command, 182 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 240° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: 1,500 ft unknown

## 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 19861218067939A](https://openairdocs.org/incident/19861218067939A), Dec 18, 1986: Cessna 172M, Middleton, WI, Substantial damage. CFI allowed student to slip aircraft on final. Aircraft stalled.CFI unable to recover. Struck trees short of runway

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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