# NTSB CHI01LA072: Cessna 172P, N53118, Prairie Du Sac, WI, January 21, 2001 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: January 21, 2001, 16:25 local (22:25 UTC) - Place: Prairie Du Sac, WI - Coordinates: 43.289196, -89.720222 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.2892&lon=-89.7202&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 1, 2001 - Report: Approved by Office Director - Parties: FAA-Milwaukee FSDO - NTSB case key (mKey): 51389 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI01LA072 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/51389/pdf - Page: https://openairdocs.org/ntsb/CHI01LA072 ## Probable cause the improper trim setting and the pilot failed to maintain control of the airplane. A factor was the snowbank. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, takeoff - trim setting - not followed, pilot in command (contributing factor) - aircraft control - not maintained, pilot in command (cause) - On ground/water encounter with terrain/water, takeoff - roll/run - terrain condition - snowbank (contributing factor) - Nose over, takeoff - roll/run ## Analysis The student pilot reported that he planned to practice solo soft-field takeoffs, short-field takeoffs, and normal landings. It had been over two months since he had practiced those takeoff procedures. He reported that during the takeoff roll from a hard surface runway, the nose shot "... straight up, very fast and very high in front of me. This was totally unexpected to me." He reported the airplane started veering to the left and he applied right rudder, but he did not release the back pressure on the yoke. He reported he realized that he did not have the airplane under control and he pulled the throttle to idle. The airplane impacted a snow bank on the left side of the runway and nosed over. He reported he discovered that the airplane had been trimmed nose up. ## Factual narrative On January 21, 2001, at 1625 central standard time, a Cessna 172P, N53118, operated by Wisconsin Aviation, Inc., was substantially damaged when it veered off runway18 (2,940 feet by 32 feet, asphalt dry) at Sauk-Prairie Airport, Prairie Du Sac, Wisconsin. The solo student pilot was practicing short-field takeoffs when the airplane veered off the runway. The airplane hit a snow bank and nosed over. The student pilot was not injured. The fight originated from Madison, Wisconsin, at 1555. Visual meteorological conditions prevailed and no flight plan was filed. The student pilot reported that he planned a solo practice of soft-field takeoffs, short-field takeoffs, and normal landings. He reported that it had been over two months since he had practiced those takeoff procedures. He reported he executed a solo soft-field takeoff, and it was the first time that he had conducted one by himself. He reported that he put in ten degrees of flaps and pulled the yoke back into his chest. He applied full power and tightened the friction lock. He reported that during the takeoff roll the nose shot "... straight up, very fast and very high in front of me. This was totally unexpected to me." He reported the airplane started veering to the left and he applied right rudder, but he did not release the back pressure on the yoke. He reported he realized that he did not have the airplane under control and he pulled the throttle to idle. The airplane impacted a snow bank on the left side of the runway and nosed over. He reported he evacuated the airplane without being injured. He reported he discovered that the airplane had been trimmed nose up. The student pilot reported that the accident could have been prevented by the following steps: 1. Follow proper procedures for the soft-field takeoff technique. Namely for me, release the back pressure on the yoke as the plane accelerates and moves into ground effect. Hold ailerons level near the ground. 2. Be wary of false confidence in my skills. Know the technique. Practice beforehand with a CFI. 3. Remember the before-takeoff checklist. For me: the trim setting. 4. Know that when the takeoff is going badly, reduce power and nose back down: reject takeoff. 5. Realize that a narrow runway in a vast white field is a tough place to practice this technique. ## Aircraft - Registration: [N53118](https://openairdocs.org/deregistered/N53118-2003-02-10), registration cancelled 2003-02-10, S/N 17274688, built 1981 (OpenAirDocs) - Reported make and model: Cessna 172P - Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (registry code 2072436) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17274688 - Airframe hours: 7656 - Engines: Lycoming O-320-D2J 160 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Wisconsin Aviation Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 24, 2000, 84 hours before - Departed: MSN, Madison, WI - Airport: 91C, Sauk-Prairie Airport, runway 18, 2,940 × 32 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 33; injuries: none; student; medical: class 3, with waivers/limitations; seat: left; flight hours: 63 total, 13 in this make and model, 13 as pilot in command, 25 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 21 °F, dew point 10 °F - Altimeter: 30.29 inHg - Observed at: MSN, 21 nm away 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.