# NTSB DEN88LA041: Piper PA-18-125, N211T, Riverton, WY, December 26, 1987

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: December 26, 1987, 12:00 local (19:00 UTC)
- Place: Riverton, WY
- Coordinates: 43.030166, -108.409317 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.0302&lon=-108.4093&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report December 27, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 17429
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN88LA041
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17429/pdf
- Page: https://openairdocs.org/ntsb/DEN88LA041

## Sequence of events

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

- Loss of control - in flight, go-around (vfr)
  - pull-up - excessive, pilot in command(cfi) (cause)
  - airspeed(vso) - not maintained, pilot in command(cfi) (cause)
  - stall - inadvertent, pilot in command(cfi) (cause)
  - emergency procedure - simulated, pilot in command(cfi) (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE INSTRUCTOR PLT AND STUDENT WERE PRACTICING FORCED LANDINGS TO AN OPEN FIELD. THE INSTRUCTOR STATED THAT HE DESCENDED TO APPROX 50 TO 75 FT AGL OVER THE INTENDED LANDING AREA. HE INITIATED A GO AROUND, PULLED UP AND BANKED LEFT TO GO OVER POWERLINES. AT AN ALT OF APPROX 100 TO 150 FT THE ACFT STALLED AND THE INSTRUCTOR WAS UNABLE TO RECOVER BEFORE GROUND IMPACT.

## Aircraft

- Registration: N211T (not matched to a registry record)
- Reported make and model: PIPER PA-18-125
- Category: Airplane
- Serial number: 18-2325
- Airframe hours: 4367
- Engines: LYCOMING O-290-D 125 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Western Executive Air
- Registered owner: U.S. States Energy Of Crested
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 25, 1987, 62 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 20; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 393 total, 61 in this make and model, 194 as pilot in command, 80 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 16 °F, dew point 10 °F
- Altimeter: 30.00 inHg

## 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 19871226071809A](https://openairdocs.org/incident/19871226071809A), Dec 26, 1987: Piper PA18105, Riverton, WY, Substantial damage. Performing a simulated forced landing. Let airspeed get too slow. Stalled. Crashed in an open field.

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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