# NTSB DEN83LA187: Piper PA-11, N4573M, Wagner, SD, August 8, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 8, 1983, 11:30 local (17:30 UTC)
- Place: Wagner, SD
- Coordinates: 43.069202, -98.299667 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.0692&lon=-98.2997&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16134
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN83LA187
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16134/pdf
- Page: https://openairdocs.org/ntsb/DEN83LA187

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise
  - ignition system,magneto - failure,partial (cause)
- Forced landing, landing - flare/touchdown
- On ground/water collision with object, landing
  - object - wire,static (contributing factor)
  - precautionary landing - performed, pilot in command (contributing factor)

## Analysis

THE PLT REPORTED THAT THE ENG BEGAN LOOSING POWER AS HE APPROACHED HIS DESTINATION. HE ELECTED TO MAKE AN EMERGENCY LANDING ON A ROAD TO INVESTIGATE THE PROBLEM. HE STATED THAT HE MADE A STALLED LANDING THAT CAUSED THE TAILWHEEL TO UNLOCK & ALLOWED THE ACFT TO VEER TO THE LEFT. HE ADDED POWER TO CORRECT THE SITUATION, THEN THE LEFT WING HIT A WIRE. ACCORDING TO THE PLT, THE ENG PROBLEM WAS CAUSED BY THE MAGNETOS WHICH HAD RECENTLY BEEN WORKED ON.

## Aircraft

- Registration: [N4573M](https://openairdocs.org/aircraft/N4573M), registered now, S/N 1176, built 1947 (OpenAirDocs)
- Reported make and model: PIPER PA-11
- Registry model: [Piper PA-11](https://openairdocs.org/model/piper-pa-11) (registry code 7101102) (OpenAirDocs)
- Registry engine: [Continental A&C75 series](https://openairdocs.org/engine/continental-a-c75-series) (registry code 17005, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1176
- Engines: CONTINENTAL A-65-8 65 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Douglas Wiechman
- Airworthiness certificate: Standard, Normal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; student; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 86 total, 86 in this make and model, 59 as pilot in command, 37 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 90 °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 19830808045289A](https://openairdocs.org/incident/19830808045289A), Aug 8, 1983: Piper PA11, Wagner, SD, Substantial damage. Struck a powerline during an emergency landing on a road. Pilot reported magneto failure.

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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