# NTSB CHI01LA181: Masko Mustang MII, N24898, Ann Arbor, MI, June 21, 2001 - Type: NTSB accident investigation - Classification: Accident · Fatal · Limited investigation · Final report - Date: June 21, 2001, 14:05 local (18:05 UTC) - Place: Ann Arbor, MI - Coordinates: 42.259067, -83.850662 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.2591&lon=-83.8507&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 2 fatal - Status: Completed, report June 18, 2002 - Report: Approved by Office Director - Parties: FAA-Detroit, Michigan - FSDO - NTSB case key (mKey): 52577 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI01LA181 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/52577/pdf - Page: https://openairdocs.org/ntsb/CHI01LA181 ## Probable cause The pilot's failure to maintain control of the airplane resulting in the inadvertent stall/spin. A factor was the pilot's unfamiliarity with the airplane. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, maneuvering - aircraft control - not maintained, pilot in command (cause) - lack of familiarity with aircraft, pilot in command (contributing factor) - stall/spin - inadvertent, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis The airplane was destroyed when it impacted terrain following a loss of control while maneuvering in the traffic pattern. The aircraft had just completed a touch and go and was turning from the upwind to the crosswind leg of the traffic pattern. Witnesses to the accident saw the airplane make a steep right turn prior to spiraling to the ground. A postaccident examination of the airplane revealed no anomalies that could be associated with a pre-impact condition. It was reported that the airplane was purchased on June 16, 2001. The pilot was the flight instructor of the new owner. The owner was not aboard the airplane when the accident occurred. ## Factual narrative On June 21, 2001, at 1405 eastern daylight time, an amateur-built Masko Mustang MII, N24898, piloted by a commercial pilot, was destroyed when it impacted terrain following a loss of control while maneuvering in the traffic pattern at the Ann Arbor Municipal Airport (ARB), Ann Arbor, Michigan. The aircraft had just completed a touch and go and was turning from the upwind to the crosswind leg of the traffic pattern for runway 06 (3,500 feet by 75 feet, concrete). The local flight was being operated under the provisions of 14 CFR Part 91 and was not on a flight plan. Visual meteorological conditions prevailed at the time of the accident. The pilot and the pilot rated passenger received fatal injuries. The flight originated from ARB at 1353. Witnesses to the accident saw the airplane make a steep right turn prior to spiraling to the ground. A postaccident examination of the airplane revealed no anomalies that could be associated with a pre-impact condition. The pilot held commercial and certified flight instructor certificates with airplane single engine land and instrument airplane ratings. The pilot also held a ground instructor certificate with advanced and instrument ratings. According to Federal Aviation Administration records, the pilot reported having 398 hours of flight time as of March 15, 2001. The pilot's logbook was not recovered. The pilot rated passenger held a commercial pilot certificate with airplane single engine land and instrument airplane ratings. He held a certified flight instructor certificate with an airplane single engine land rating. The pilot rated passenger also held a ground instructor certificate with an advanced rating. According to Federal Aviation Administration records, the pilot rated passenger reported having 307 hours of flight time as of May 10, 2001. The pilot rated passenger's logbook was not recovered. Toxicology tests performed on the pilot and pilot rated passenger were negative for all tests performed. Autopsies were performed on the pilot and pilot rated passenger by Washtenaw County on June 22, 2001. It was reported that the airplane was purchased on June 16, 2001. The pilot was the flight instructor of the new owner. The owner was not aboard the airplane when the accident occurred. ## Aircraft - Registration: [N24898](https://openairdocs.org/deregistered/N24898-2012-09-10), registration cancelled 2012-09-10, S/N 8 (OpenAirDocs) - Reported make and model: Masko Mustang MII - Registry model: [Masko MUSTANG M II](https://openairdocs.org/model/masko-mustang-m-ii) (registry code 056279L) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 8 - Engines: Lycoming O-320 150 horsepower reciprocating - Damage: Destroyed - Flight: Personal, Part 91 - Registered owner: Craig W. Peterson - Airworthiness certificate: Special, Experimental (Special) - Departed: ARB, Ann Arbor, MI - Destination: ARB, Ann Arbor, MI - Airport: ARB, Ann Arbor Muni, runway 06, 3,500 × 75 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 25; injuries: fatal; flight instructor, commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 398 total - Other flight crew; age 19; injuries: fatal; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; toxicology performed; flight hours: 307 total ## Weather - Conditions: Visual (VMC), Day - Wind: 60° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: 8,500 ft broken - Temperature: 66 °F, dew point 59 °F - Altimeter: 30.03 inHg - Observed at: ARB ## 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 20010621022619A](https://openairdocs.org/incident/20010621022619A), Jun 21, 2001: Ann Arbor, MI, No damage. (-19) On June 21, 2001, at 1405 eastern daylight time, an amateur-built masko mustang mii, N24898, piloted by a commercial pilot, was destroyed when it… 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.