# Accident 20010616018839A: Sud CM170, La Crosse, WI, June 16, 2001

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 16, 2001, 09:45 local time
- Place: La Crosse, WI
- Airport: La Crosse Municipal
- Damage: No damage
- Operating rules: General operating rules (Part 91)
- Location: 43.8789° N, 91.2567° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=43.8789&lon=-91.2567&mi=10
- Aircraft: N301FM, a cancelled registration (https://openairdocs.org/deregistered/N301FM-2001-10-09) (OpenAirDocs)
- Registry model: Fouga CM 170R MAGISTER (registry code 3650101, https://openairdocs.org/model/fouga-cm-170r-magister) (OpenAirDocs)
- Registry engine: Turbomeca ARTOUSTE II series (registry code 60002, https://openairdocs.org/engine/turbomeca-artouste-ii-series) (OpenAirDocs)
- Reported make and model: SUD CM170
- NTSB investigation: [NTSB CHI01FA180](https://openairdocs.org/ntsb/CHI01FA180) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20010616018839A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(.19) ON JUNE 16, 2001, ABOUT 0945 CENTRAL DAYLIGHT TIME, A FOUGA CM 170, N301FM, PILOTED BY AN AIRLINE TRANSPORT PILOT, WAS DESTROYED ON IMPACT WITH TERRAIN AND POST IMPACT FIRE FOLLOWING AN IN-FLIGHT SEPARATION OF CONTROL SURFACES WHILE IN RUNWAY 21'S PATTERN AT LA CROSSE MUNICIPAL AIRPORT (LSE), NEAR LA CROSSE, WISCONSIN. THE PERSONAL FLIGHT WAS OPERATING UNDER 14 CFR PART 91. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE ACCIDENT. NO FLIGHT PLAN WAS ON FILE. THE PILOT AND REAR SEAT PASSENGER WERE FATALLY INJURED. THE LOCAL FLIGHT ORIGINATED FROM LSE ABOUT 0930, AND WAS ON THE UPWIND PORTION OF RUNWAY 21'S PATTERN AT THE TIME OF THE ACCIDENT. AN ON-SCENE INVESTIGATION WAS CONDUCTED. THE FUSELAGE AND RIGHT WING WERE FOUND 817 FEET FROM THE DEPARTURE END OF RUNWAY 21. THE LEFT WING WAS DETACHED FROM THE FUSELAGE AND WAS FOUND ABOUT 30 FEET EAST OF RUNWAY 21 AT RUNWAY 21'S INTERSECTION WITH RUNWAY 18. THE LEFT ENGINE EXHIBITED REVERSE BENDING OF ITS COMPRESSOR BLADES. THE RIGHT ENGINE EXHIBITED SCORING ON ITS CASE ALONG THE PLANE OF THE TURBINE ROTORS. THE AIRPLANE'S TIP TANKS WERE FOUND DETACHED FROM THEIR WING TIPS.  AT 0953, THE LSE WEATHER WAS: WIND VARIABLE AT 3 KNOTS; VISIBILITY 10 STATUTE MILES; SKY CONDITION CLEAR; TEMPERATURE 21 DEGREES C; DEW POINT 12 DEGREES C; ALTIMETER 30.04 INCHES OF MERCURY. MATERIAL FROM THE TIP TANKS AND MATERIAL FROM THE LEFT SPAR WERE FORWARDED TO THE NATIONAL TRANSPORTATION SAFETY BOARD'S MATERIALS LABORATORY FOR EXAMINATION.                                                                        (-23) ON JUNE 16, 2001 AT 0945 CDT WHILE ATTENDING THE LACROSSE, WISCONSIN DEKE SLAYTON AIRFEST, N301FM, A FOUGA CM-170 TWIN ENGINE FRENCH MILITARY JET TRAINER OPERATED BY AND REGISTERED TO ROGER S. SIMPSON OF NORTHVILLE, MICHIGAN, EXPERIENCED AN IN-FLIGHT STRUCTURAL FAILURE WHILE ON A LOW PASS DOWN RUNWAY 21 AT LACROSSE. N301FM WAS LICENSED IN THE EXPERIMENTAL EXHIBITION CATEGORY. VFR CONDITIONS PREVAILED AT THE TIME OF THE LOCAL FLIGHT. A FLIGHT PLAN WAS NOT FILED. THE AIRCRAFT WAS DESTROYED, THE PILOT AND PASSENGER RECEIVED FATAL INJURIES. THE FLIGHT ORIGINATED AT LACROSSE, WISCONSIN ON JUNE 16, 2001 AT APPROXIMATELY 0935 CDT.

## The NTSB's investigation of this event (1)

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.

- [NTSB CHI01FA180](https://openairdocs.org/ntsb/CHI01FA180), Jun 16, 2001: Potez-Air Fouga CM 170 (N301FM), La Crosse, WI, destroyed, 2 fatal. Probable cause: The fatigue failure of the aircraft's left wing tip fuel tank rear attachment, while the aircraft was being maneuvered in a low approach, leading to the tank's in-flight separation and subsequent…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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