# NTSB CEN25FA148: Anusiewicz Cassutt III M, N5RR, Haskell, OK, April 8, 2025 - Type: NTSB accident investigation - Classification: Accident · Fatal · Class 3 · Field · Preliminary report - Date: April 8, 2025, 14:59 local (19:59 UTC) - Place: Haskell, OK - Coordinates: 35.833363, -95.662653 - Nearby events: https://openairdocs.org/map.md?lat=35.8334&lon=-95.6627&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Defining event: [Approach-VFR pattern downwind: Abrupt maneuver](https://openairdocs.org/ntsb-events/270) - Highest injury: Fatal - Injuries: 1 fatal - Status: Investigation ongoing - Investigation class: Class 3 - NTSB office: Central Region - Parties: FAA - NTSB case key (mKey): 199980 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN25FA148 - NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/199980/pdf - Page: https://openairdocs.org/ntsb/CEN25FA148 ## Preliminary report On April 8, 2025, about 1459 central daylight time, a Cassutt III M airplane, N5RR, was substantially damaged when it was involved in an accident near Haskell, Oklahoma. The pilot was fatally injured. The aircraft was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. A witness stated that he was standing in front of the accident pilot’s hangar and had observed the pilot complete two or three laps around the airport traffic pattern. On the final lap, he said the pilot flew the length of the runway at about 100 feet above the ground and then saw the airplane pitch nose up steeply off the end of the runway. The airplane climbed until the airplane slowed down, at which point the airplane leveled off and turned through crosswind to the downwind leg of the traffic pattern where it began to pick up speed once again. He stated that the pilot had routinely done this maneuver in the past. The witness stated that while the airplane was on the downwind leg of the traffic pattern, it entered an aileron roll, and while upside down, the nose dipped towards the ground and the airplane began to lose altitude. The airplane continued through the roll, and it looked like the pilot had managed to level the wings of the airplane and was in the process of pulling out of the ensuing shallow dive but didn’t have enough altitude to do so. The airplane impacted the ground at a shallow angle, bounced and tumbled with components separating from the airplane. According to the witness, it all happened in about 5 seconds and that it occurred very fast. The witness stated that he had never seen the pilot perform any aerobatic type maneuvers in the past. Multiple witnesses stated that the engine was running at full power at the time of the accident and heard no indication of an engine issue. The airplane was examined at the accident site, and all major components of the airplane were present. Control cable continuity was verified, and no flight control anomalies were noted. The engine exhibited impact damage and no anomalies were noted. Wood propeller blade fragments were found on and in the ground at the initial point of impact. The propeller hub remained attached to the propeller mounting flange. The pilot’s cellphone was recovered at the accident site, and a cursory examination of the phone provided flight track data from an application installed on the phone. No phone calls or texts were present at the time of the accident. The phone was retained for further examination. ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Approach-VFR pattern downwind: Abrupt maneuver](https://openairdocs.org/ntsb-events/270) (defining event); cases with it: [Anusiewicz CASSUTT III M, 1 case](https://openairdocs.org/ntsb-events/270/sequence.md?model=1970201), [All aircraft, 346 cases](https://openairdocs.org/ntsb-events/270/sequence.md) ## Aircraft - Registration: [N5RR](https://openairdocs.org/aircraft/N5RR), registered now, S/N 326, built 1974 (OpenAirDocs) - Reported make and model: ANUSIEWICZ CASSUTT III M - Registry model: [Anusiewicz CASSUTT III M](https://openairdocs.org/model/anusiewicz-cassutt-iii-m) (registry code 1970201) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 326 - Year built: 1974 - Airframe hours: 547 - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, August 21, 2024 - Departed: 2K9, Haskell, OK - Equipment: None ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 36 °F - Altimeter: 30.06 inHg - Observed at: KOKM, 17 nm away - METAR: KOKM 082015Z AUTO 15003KT 10SM CLR 22/02 A3006 RMK AO2 T02150015 ## 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 20250408002969A](https://openairdocs.org/incident/20250408002969A), Apr 8, 2025: Anusiewicz CASSUTT III M, Haskell, OK, Destroyed, 1 fatal. On 4/8/2025 at 1500 hrs. , a cassutt iii aircraft crashed near 2K9 after witnesses observed an attempted aerobatic maneuver at approx. 800 ft above the… 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.