# NTSB CHI85FA176: Cessna R182, N4707T, Prairie Dusac, WI, April 26, 1985 - Type: NTSB accident investigation - Classification: Accident · Fatal · Field investigation · Final report - Date: April 26, 1985, 17:36 local (23:36 UTC) - Place: Prairie Dusac, WI - Coordinates: 43.290428, -89.719223 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.2904&lon=-89.7192&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 1 fatal, 2 uninjured - Status: Completed - Report: Approved by Office Director - NTSB case key (mKey): 12831 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85FA176 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12831/pdf - Page: https://openairdocs.org/ntsb/CHI85FA176 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Midair collision, climb - to cruise - visual lookout - inattentive, pilot in command(cfi) (cause) - improper use of procedure, pilot in command(cfi) (cause) - psychological condition, pilot in command(cfi) (cause) - diverted attention, pilot in command(cfi) (cause) - inattentive, pilot in command(cfi) (cause) - Forced landing, descent - emergency - wing - loss,partial - emergency procedure - performed, dual student - flight control,elevator tab - loss,partial - precautionary landing - performed, dual student - Midair collision, descent - normal - light condition - sunglare (contributing factor) - visual lookout - inattentive, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis (aircraft 2) THIS MIDAIR COLLISION OCCURRED APPROX 2 MI NE OF SAUK-PRAIRIE APT. THE PILOTS OF THE CESSNA WERE IN A CLIMBING RIGHT DEPARTURE TURN AT APPROX 1600 FT MSL HEADING APPROX 120 DEG WHEN A COLLSION OCCURRED WITH A PIPER HEADING APPROX 270 DEG AND DESCENDING. ONE PILOT IN THE CESSNA WAS WEARING AN INSTRUMENT HOOD. THE PILOT OF THE PIPER WAS FLYING INTO THE SETTING SUN. ONE WITNESS SAW THE PIPER MAKE A SHARP EVASIVE TURN JUST PRIOR TO IMPACT. THE PILOTS OF THE CESSN DID NOT SEE THEPIPER UNTIL AFTER THE COLLSION. FOLLOWING THE COLLSION THE PILOT OF THE PIPER LOST CONTROL OF HIS AIRCRAFT AND CRASHED. THE PILOTS IN THE CESSN LANDED SAFELY BACK AT SAUK-PRAIRIE EVEN THOUGH 3 FT 4 INCHES OF THE RIGHT WING AND 4 FT 4 INCHES OF THE RIGHT AILERON WERE MISSING. NEARLY FULL LEFT AILERON WAS REQUIRED THROUGHOUT THE RECOVERY AND LANDING. ## Analysis (aircraft 1) THIS MIDAIR COLLISION OCCURRED APPROX 2 MI NE OF SAUK-PRAIRIE APT. THE PILOTS OF THE CESSNA WERE IN A CLIMBING RIGHT DEPARTURE TURN AT APPROX 1600 FT MSL HEADING APPROX 120 DEG WHEN A COLLISION OCCURRED WITH A PIIPER HEADING APPROX 270 DEG AND DESCENDING. ONE PILOT IN THE CESSNA WAS WEARING AN INSTRUMENT HOOD. THE PILOT OF THE PIPER WAS FLYING INTO THE SETTING SUN. ONE WITNESS SAW THE PIPER MAKE A SHARP EVASIVE TURN JUST PRIOR TO IMPACT. THE PILOTS OF THE CESSNADID NOT SEE THE PIPER UNTIL AFTER THE COLLISION. FOLLOWING THE COLLISION THE PILOT OF THE PIPER LOST CONTROL OF HIS AIRCRAFT AND CRASHED. THE PILOTS IN THE CESSNA LANDED SAFELY BACK AT SAUK-PRAIRIE EVEN THOUGH 3 FT 4 INCHES OF THE RIGHT WING AND 4 FT 4 INCHES OF THE RIGHT AILERON WERE MISSING. NEARLY FULL LEFT AILERON WAS REQUIRED THROUGHOUT THE RECOVERY AND LANDING. ## Aircraft 1 - Registration: [N4707T](https://openairdocs.org/aircraft/N4707T), registered now, S/N R18201739, built 1981 (OpenAirDocs) - Reported make and model: CESSNA R182 - Registry model: [Cessna R182](https://openairdocs.org/model/cessna-r182) (registry code 2072734) (OpenAirDocs) - Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18201739 - Airframe hours: 385 - Engines: LYCOMING O-540-L3C5D 235 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Larry Klapmeier - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 22, 1984, 29 hours before - Destination: MSN, MADISON, WI - Airport: 91C, Sauk-Prairie ## Aircraft 2 - Registration: [N761R](https://openairdocs.org/deregistered/N761R-2013-05-08), registration cancelled 2013-05-08, S/N 17-24, built 1948 (OpenAirDocs) - Reported make and model: PIPER PA-17 - Registry model: [Piper PA-17](https://openairdocs.org/model/piper-pa-17) (registry code 7101702) (OpenAirDocs) - Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1724 - Engines: CONTINENTAL A658 65 horsepower reciprocating - Damage: Destroyed - Flight: Personal, Part 91 - Registered owner: Paul D. Boehme - Airworthiness certificate: Standard, Normal - Airport: 91C, Sauk-Prairie ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N4707T; age 27; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: right; flight hours: 4,000 total, 30 in this make and model, 3,850 as pilot in command, 180 in the last 90 days, 1 in the last 24 hours - Pilot, aircraft N761R; age 35; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 125 total, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 50° at 7 knots - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 64 °F ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19850426069882A](https://openairdocs.org/incident/19850426069882A), Apr 26, 1985: Cessna R182, Prairie Dusac, WI, Substantial damage. During climbing right turn after takeoff on IFR training flight low wing was struck by N761R. No radios used. - [Accident 19850426069881A](https://openairdocs.org/incident/19850426069881A), Apr 26, 1985: Piper PA17, Prairie Dusac, WI, Destroyed. Entering traffic pattern into sun collided with departing N4707T. Spun to ground. No radio communications. 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.