# NTSB CHI00LA239: Kollier Pitts S1C, N87V, Salem, IN, August 4, 2000 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: August 4, 2000, 13:30 local (18:30 UTC) - Place: Salem, IN - Coordinates: 38.599285, -86.090629 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.5993&lon=-86.0906&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report May 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49916 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI00LA239 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49916/pdf - Page: https://openairdocs.org/ntsb/CHI00LA239 ## Probable cause The pilot failed to maintain control of the airplane during an intentional inverted flat spin and the initial control inputs he used in an attempt to recover were improper. A factor associated with the accident was the pilot became disoriented during the maneuver. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, maneuvering - aerobatics - intentional, pilot in command - aircraft control - not maintained, pilot in command (cause) - spatial disorientation, pilot in command (contributing factor) - remedial action - improper, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis The pilot reported that while practicing aerobatics, he intentionally entered an inverted flat spin at 2,800 feet above ground level. The pilot reported that once the airspeed slowed to 80 mph, he added full forward stick and right rudder to enter the spin. He then added stick pressure in the direction of the spin and added power to make the spin flatten out. After one and a half turns, he neutralized the stick pressure and brought the power to idle. He then attempted to recover from the spin by adding left rudder followed by aft stick pressure. The pilot reported that although he did not recognize it at the time, he believes in hindsight, that the airplane then transitioned to a very nose low, accelerated upright spin in the same direction as the inverted spin. He reported that after approximately 15 turns, when he was unable to recover from the spin, he decided to let go of the flight controls. He reported that the spin remained steady and he still believed that he was inverted. He reported that just prior to impacting the terrain, he added right rudder and forward stick pressure. According to the pilot, the spin stopped with the airplane in a nose low attitude. The pilot reported that he added back stick pressure to raise the nose. The airplane impacted the ground in an upright attitude at high velocity after which it nosed over. ## Factual narrative On August 4, 2000, at 1330 central daylight time, a Kollier Pitts S1C, N87V, operated by an airline transport rated pilot, collided with the terrain while performing aerobatic maneuvers in Salem, Indiana. The pilot received minor injuries and the airplane was substantially damaged. The 14 CFR Part 91 personal flight was operating in visual meteorological conditions without a flight plan. The flight originated from the Salem Municipal Airport, at 1320 cdt. The pilot reported that after takeoff, he climbed to 2,800 feet above ground level (agl). He reported that he performed an inside snap roll, rolled inverted to check and make sure his harness was secure, then he performed 2 outside snap rolls, followed by 1 rolling 360 degree turn at 2,500 feet agl. The pilot reported that he then climbed back up to 2,800 feet agl to practice an inverted flat spin. He reported he climbed inverted and as the airspeed reached 80 miles per hour, he reduced the power to idle. He reported he then added full forward stick and right rudder to enter the spin. He stated that the spin entry was normal. He reported he added stick pressure in the direction of the spin and added power to make the spin flatten out. After 1 1/2 turns, he neutralized the stick pressure and brought the power to idle. He then attempted to recover from the spin by adding left rudder followed by aft stick pressure. The pilot reported that although he did not recognize it at the time, he believes in hindsight, that the airplane then transitioned to a very nose low, accelerated upright spin in the same direction as the inverted spin. He reported that after approximately 15 turns, when he was unable to recover from the spin, he decided to let go of the flight controls. He reported that the spin remained steady and he still believed that he was inverted. He reported that just prior to impacting the terrain, he added right rudder and forward stick pressure. According to the pilot, the spin stopped with the airplane in a nose low attitude. The pilot reported that he added back stick pressure to raise the nose. The airplane impacted the ground in an upright attitude at high velocity after which it nosed over. ## Aircraft - Registration: [N87V](https://openairdocs.org/deregistered/N87V-2001-01-19), registration cancelled 2001-01-19, S/N 101-1 (OpenAirDocs) - Reported make and model: KOLLIER PITTS S1C - Registry model: [Kollier PITTS S1C](https://openairdocs.org/model/kollier-pitts-s1c) (registry code 72202HN) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 1011 - Airframe hours: 701 - Engines: Lycoming O-320-A2B 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Charles R. Morgan - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, January 5, 2000, 25 hours before - Departed: I83 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 39; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: center; flight hours: 5,025 total, 30 in this make and model, 3,775 as pilot in command, 100 in the last 90 days, 50 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: 84 °F ## 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 20000804039169A](https://openairdocs.org/incident/20000804039169A), Aug 4, 2000: Salem, IN, No damage. (-23) Pilot was practicing aerobatics and intentionally entered an inverted spin. After two turns he applied recovery controls and the a/c did not recover.… ## Other investigations on N87V (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 CHI73FEE08](https://openairdocs.org/ntsb/CHI73FEE08), Jul 16, 1972: Pitts Spcl SC-1 (N87V), Aurora, IL, substantial damage 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.