# NTSB CHI83FA371: Siai-Marchetti F.260C, Oshkosh, WI, August 6, 1983

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: August 6, 1983, 16:40 local (21:40 UTC)
- Place: Oshkosh, WI
- Coordinates: 44.019954, -88.619049 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.0200&lon=-88.6190&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12016
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83FA371
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12016/pdf
- Page: https://openairdocs.org/ntsb/CHI83FA371

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, maneuvering
  - aerobatics - initiated, pilot in command
  - proper altitude - not maintained, pilot in command (cause)
  - terrain condition - ground
  - clearance - misjudged, pilot in command (cause)

## Analysis

THE FOREIGN REGISTERED PLT HAD A STATEMENT OF AEROBATIC COMPETENCY BY AN FAA INSPECTOR WHICH CONTAINED A MIN ALT LIMITATION OF 300 FT AGL. WHILE PERFORMING AT AN AIR SHOW, HE HAD PLANNED TO PULL UP IN A HALF LOOP, MAKE A HALF ROLL ON TOP, ENTER A 2 TURN SPIN & RECOVER. THE MANEUVER WAS GENERALLY FLOWN AS BRIEFED; HOWEVER, THE ACFT STRUCK THE GROUND BEFORE COMPLETELY RECOVERING FROM THE SPIN. SEVERAL QUALIFIED AEROBATIC PLTS AGREED THE HALF LOOP WAS INITIATED FROM ABOUT 100 FT AGL & THAT THE SPIN ROTATION HAD STOPPED AT ABOUT 300 FT AGL, BUT THE ACFT WAS IN APRX AT 10 DEG NOSE DOWN ATTITUDE WHEN IT HIT THE GROUND. THE PLT RECEIVED SEVERE NECK, BACK & BRAIN INJURIES & DIED 6 DAYS LATER. NO EVIDENCE OF A MALFUNCTION OR FAILURE OF THE ACFT WAS FOUND.

## Aircraft

- Registration: IRAID (not matched to a registry record)
- Reported make and model: SIAI-MARCHETTI F.260C
- Category: Airplane
- Airframe hours: 69
- Engines: LYCOMING O-540-E4A5 reciprocating
- Damage: Substantial damage
- Flight: Part 91
- Registered owner: La Societa Siai-Marcheti
- Airworthiness certificate: Standard, Aerobatic
- Last inspection: Annual, June 21, 1983, 69 hours before
- Airport: OSH, Wittman Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; airline transport, foreign; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right

## Weather

- Conditions: Visual (VMC), Day

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.

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