# NTSB CHI04CA136: Cessna 172P, N50923, Milwaukee, WI, June 4, 2004 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 4, 2004, 15:10 local (20:10 UTC) - Place: Milwaukee, WI - Coordinates: 43.110279, -88.034446 - Nearby events: https://openairdocs.org/map.md?lat=43.1103&lon=-88.0344&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report September 1, 2004 - Report: Approved by Office Director - NTSB case key (mKey): 59381 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI04CA136 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/59381/pdf - Page: https://openairdocs.org/ntsb/CHI04CA136 ## Probable cause The CFI failed to maintain adequate airspeed during the go-around which resulted in an inadvertent stall. ## 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) - airspeed - inadequate, pilot in command(cfi) (cause) - stall/mush - inadvertent (cause) - In flight collision with terrain/water, go-around (vfr) - terrain condition - ground - Nose over, go-around (vfr) ## Analysis The airplane came to rest inverted following a loss of control during a go-around. The purpose of the flight was to practice takeoffs and landings. The certifed flight instructor (CFI) stated the accident occurred on the fourth landing of the flight. The CFI stated the student flew the traffic pattern and was lined up with the runway centerline using a slight crab angle to the right. He stated the airplane began drifting to right during the landing flare. He recalled hearing the student say "runway lights." The CFI stated he called for a go-around and the throttle was advanced to full power. The CFI stated he felt the airplane "mushing" so he pushed the nose forward to maintain airspeed. He stated he anticipated that the nose would lift because they had 30 degrees of flaps extended. He stated the airplane then yawed sharply to the left, hit the ground, and flipped inverted. The CFI stated that during the go-around the airplane required an "inordinate" amount of right rudder to keep the nose straight. ## Factual narrative On June 4, 2004, at 1510 central daylight time, a Cessna 172P, N50923, nosed over while landing on runway 04L (3,202 feet by 75 feet, asphalt) at the Timmerman Airport, Milwaukee, Wisconsin. The certified flight instructor (CFI) and the student pilot were not injured. The airplane was substantially damaged. The 14 CFR Part 91 instructional flight was operating in visual meteorological conditions without a flight plan. The local flight originated about 1430. The CFI stated the purpose of the flight was to practice takeoffs and landings. He stated the accident occurred on the fourth landing of the flight. The CFI stated the student flew the traffic pattern and was lined up with the runway centerline using a slight crab angle to the right. He stated the airplane began drifting to right during the landing flare. He recalled hearing the student say "runway lights." The CFI stated he called for a go-around and the throttle was advanced to full power. The CFI stated he felt the airplane "mushing" so he pushed the nose forward to maintain airspeed. He stated he anticipated that the nose would lift because they had 30 degrees of flaps extended. He continued to state that the airplane then yawed sharply to the left, hit the ground, and flipped inverted. The CFI stated he shut off the mixture, fuel selector, magnetos, and master switch prior to exiting the airplane. The CFI stated that during the go-around the airplane required an "inordinate" amount of right rudder to keep the nose straight. ## Aircraft - Registration: [N50923](https://openairdocs.org/deregistered/N50923-2005-11-29), registration cancelled 2005-11-29, S/N 17274234, built 1980 (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: 17275234 - Engines: Lycoming O-320-D2J reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Gran Aire, Inc. - Airworthiness certificate: Standard, Normal - Departed: MWC, Milwaukee, WI - Destination: MWC, Milwaukee, WI ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 34; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2; flight hours: 1,449 total, 858 in this make and model, 1,327 as pilot in command, 269 in the last 90 days, 186 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day ## 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 20040604016779A](https://openairdocs.org/incident/20040604016779A), Jun 4, 2004: Cessna 172P, Milwaukee, WI, Substantial damage. (-23) On June 4, 2004, at 1510 CDT, a Cessna 172, N50923, registered to gran aire, inc. lost directional control while practicing crosswind landings on 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. --- 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.