# NTSB CHI00LA143: Cessna T207A, N774EA, Green Bay, WI, May 24, 2000 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: May 24, 2000, 15:50 local (20:50 UTC) - Place: Green Bay, WI - Location: 44.4846° N, 88.1297° W: Placed by OpenAirDocs at GREEN BAY/AUSTIN STRAUBEL INTL (GRB), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=44.4846&lon=-88.1297&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report May 17, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49284 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI00LA143 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49284/pdf - Page: https://openairdocs.org/ntsb/CHI00LA143 ## Probable cause the improper compensation for the wind conditions. A factor in the accident was the wind shear. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, taxi - to takeoff - weather condition - windshear (contributing factor) - compensation for wind conditions - improper, pilot in command (cause) - Nose over, taxi - to takeoff ## Analysis The airplane was taxiing onto runway 24 when a gust of wind lifted the tail and flipped the airplane over. Winds reported just prior to the accident, taken from a tape of the tower controller's communications, were 310 degrees at 34 knots gusting 47 knots. Another reading was taken at the of the accident calling winds at the center field sensor as 290 degrees at 27 knots gusting 44 knots. The winds at the northeast sensor were reported as 360 degrees at 28 knots with a low level wind shear (LLWS) advisory. In a written statement the pilot said that he had been cleared for takeoff on runway 24. 'Once the plane rolled past the hold short line a strong gust of wind began to push the plane sideways, from the right side of the runway to the left. The wind then sheered to the right rear quarter of the plane pushing the 207's tail into the air so that the plane stood nearly vertically on its spinner and then continued over.' ## Factual narrative On May 24, 2000, at 1550 central daylight time, a Cessna T207A, N774EA, operated by Front Line Aviation, was substantially damaged when it nosed over while taxing onto runway 24 (7,699 feet by 150 feet, concrete/grooved) at the Austin Straubel International Airport (GRB), Green Bay, Wisconsin. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 positioning flight was operating under an IFR flight plan. The pilot reported minor injuries. The flight was departing GRB for John F. Kennedy Memorial Airport, Ashland, Wisconsin. Weather at GRB was reported at 1558 as: wind 360 degrees at 19 knots gusting to 29 knots; visibility 10 statute miles; sky condition scattered at 9,500 feet; temperature 19 degrees C; dew point 8 degrees C; altimeter 29.48 inches of mercury. Tape recordings of the Air Traffic Control communications at GRB indicate winds just prior to the accident were 310 degrees at 34 knots gusting to 47 knots. Another reading was taken as the accident was occurring calling winds at center field from 290 degrees at 27 knots gusting to 44 knots. The winds at the northeast quadrant of the airport were 360 degrees at 28 knots with a low level wind shear (LLWS) advisory from the tower. The Air Traffic Control manager at Green Bay reported, in a phone interview, that a low-level wind shear alert was being broadcast on the current Automated Terminal Information Service (ATIS) recording. In a phone interview, the pilot stated that he did not remember receiving a wind shear alert on ATIS, but does remember hearing wind shear alerts on the ground and tower frequencies. In a written statement, the pilot stated that he called air traffic control and received a clearance to takeoff on runway 24 at GRB. He reported, "Once the plane rolled past the hold short line a strong gust of wind began to push the plane sideways, from the right side of the runway to the left. The wind then sheered to the right rear quarter of the plane pushing the 207's tail into the air so that the plane stood nearly vertically on its spinner and then continued over. The plane came to rest, upsidedown, on the southside of the centerline of runway 24 with the nose pointed back in the direction of the D2 taxiway." In a phone conversation the pilot stated that he positioned the flight controls for a wind that was ahead and to the right. He stated that he had the control wheel "back and to the right." Taxiway D2 is a north-south running taxiway, and the winds were out of the northwest. Cessna recommends when winds are between the 3 o'clock and 6 o'clock position relative to the aircraft's nose, the control wheel be positioned left and forward. ## Aircraft - Registration: N774EA (not matched to a registry record) - Reported make and model: Cessna T207A - Category: Airplane - Serial number: 20700666 - Airframe hours: 9389 - Engines: Continental TSIO-520-M7B 310 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Operator: Front Line Aviation - Registered owner: Pro Aire Cargo - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 15, 2000, 39 hours before - Destination: ASX, ASHLAND, WI - Flight plan: IFR - Airport: GRB, Austin Straubel, runway 24, 7,699 × 150 ft ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 21; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 2,311 total, 21 in this make and model, 2,116 as pilot in command, 198 in the last 90 days, 65 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 360° at 19 knots, gusting 29 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 46 °F - Altimeter: 29.00 inHg - Observed at: GRB ## 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 20000524036699A](https://openairdocs.org/incident/20000524036699A), May 24, 2000: Cessna T207A, Green Bay, WI, No damage. (-23) Accident is the result of sudden very high intense wind in the vicinity of this aircraft. This condition was confirmed by fire dept., tower, pilots and… 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.