# NTSB CHI01LA239: Anderson Revelation, N6116S, Wautoma, WI, July 21, 2001 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: July 21, 2001, 17:00 local (22:00 UTC) - Place: Wautoma, WI - Coordinates: 44.059494, -89.290275 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.0595&lon=-89.2903&mi=10 - Phase of flight: [Other](https://openairdocs.org/ntsb-phases/800) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report April 1, 2003 - Report: Approved by Office Director - Parties: Federal Aviation Administration - Milwaukee FSDO - NTSB case key (mKey): 52904 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI01LA239 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/52904/pdf - Page: https://openairdocs.org/ntsb/CHI01LA239 ## Probable cause The pilot's failure to maintain airspeed, resulting in a stall. An inadequate pitch setting of the propeller is a contributing factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Miscellaneous/other, other - propeller system/accessories,pitch change mech - improper (contributing factor) - Loss of control - in flight, takeoff - initial climb - airspeed - not maintained, pilot in command (cause) - aircraft control - not maintained, pilot in command (cause) - stall - inadvertent, pilot in command (contributing factor) - climb - not possible (contributing factor) - In flight collision with terrain/water, descent - uncontrolled ## Analysis Prior to the accident flight, which was the experimental homebuilt airplane's second flight since certification, the propeller was adjusted to a finer setting to achieve the desired static engine rpm. The pilot stated that after the takeoff during the accident flight, the airplane did not accelerate normally when out of ground effect and would not climb above approximately 30 feet. The pilot reported that there was not enough runway remaining to land and he started a shallow right turn to keep over the airport area. The pilot reported, "While maintaining 60 mph IAS [indicated airspeed] in a shallow bank, the wing stalled & I was unable to recover before impact with a corn field. The plane hit the ground with right wing about 30 [degrees] low and 20-30 [degrees] nose low." No anomalies were found with the airframe or its engine that could be associated with any pre-impact condition. ## Factual narrative On July 21, 2001, at 1700 central daylight time, an amateur-built Anderson Revelation, N6116S, piloted by a commercial pilot, sustained substantial damage during an in-flight collision with the terrain following a loss of control during initial climb from runway 08 (2,280 feet by 175 feet, dry/turf) at the Wautoma Municipal Airport, Wautoma, Wisconsin. Visual metrological conditions prevailed at the time of the accident. The test flight was conducted under the provisions of 14 CFR Part 91 and was not on a flight plan. The pilot, the sole occupant, reported minor injuries. The local flight was departing at the time of the accident. According to the pilot, the airplane was recently certified as an amateur-built aircraft and was departing on its second flight since certification. The pilot reported that during the first flight the engine tachometer was reading 1,000 rpm lower than the specified range. The pilot stated that subsequent to the first flight the propeller blade pitch was adjusted to a finer setting to achieve the desired static engine rpm. According to the pilot, on the second flight, the airplane did not accelerate normally when out of ground effect and would not climb above approximately 30 feet. The pilot reported that there was not enough runway remaining to land and he started a shallow right turn to keep over the airport area. The pilot reported, "While maintaining 60 mph IAS [indicated airspeed] in a shallow bank, the wing stalled & I was unable to recover before impact with a corn field. The plane hit the ground with right wing about 30 [degrees] low and 20-30 [degrees] nose low." No anomalies were found with the airframe or its engine that could be associated with any pre-impact condition. ## Aircraft - Registration: [N6116S](https://openairdocs.org/deregistered/N6116S-2017-10-31), registration cancelled 2017-10-31, S/N RE00/0001, built 2001 (OpenAirDocs) - Reported make and model: Anderson Revelation - Registry model: [Anderson Peter J REVELATION](https://openairdocs.org/model/anderson-peter-j-revelation) (registry code 056106I) (OpenAirDocs) - Registry engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: RE00/0001 - Airframe hours: 0 - Engines: Rotax 618 75 horsepower reciprocating - Damage: Substantial damage - Flight: Flight test, Part 91 - Registered owner: Peter J. Anderson - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, July 1, 2001, 0 hours before - Departed: Y50, Wautoma, WI - Destination: Y50, Wautoma, WI - Airport: Y50, Wautoma Municipal Airport, runway 08, 2,280 × 175 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 47; injuries: minor; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; last flight review January 27, 2000; seat: left; flight hours: 4,500 total, 35 in this make and model, 4,500 as pilot in command, 250 in the last 90 days, 90 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 120° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 75 °F - Altimeter: 29.85 inHg - Observed at: OSH, 32 nm away ## 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 20010721018999A](https://openairdocs.org/incident/20010721018999A), Jul 21, 2001: Wautoma, WI, No damage. (.19) On July 21, 2001, at 1700 central daylight time, a anderson revelation, N6116S, piloted by a commercial pilot, sustained substantial damage during an… 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.