# NTSB CHI99LA064: Gulfstream 695A, N20GT, Wheeling, IL, January 12, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: January 12, 1999, 11:53 local (17:53 UTC) - Place: Wheeling, IL - Coordinates: 42.129558, -87.920494 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.1296&lon=-87.9205&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report April 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 45607 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99LA064 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/45607/pdf - Page: https://openairdocs.org/ntsb/CHI99LA064 ## Probable cause The pilot-in-command (CFI)'s poor in-flight planning and decision making, and his inadequate supervision of the dual student. Factors were the tailwind condition, icing conditions, and the dual student's improper flare. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, landing - flare/touchdown - weather condition - icing conditions (contributing factor) - weather condition - tailwind (contributing factor) - flare - improper, dual student (contributing factor) - in-flight planning/decision - poor, pilot in command(cfi) (cause) - supervision - inadequate, pilot in command(cfi) (cause) ## Analysis The instructor pilot said that there was an accumulation of ice on the airframe and the approach to the runway was with a 10 knot tailwind. The dual student flared high and a hard landing followed. After the landing the damage was discovered. When the pilot-in-command looked at the airplane he found 1/8' of ice on the leading edges of the wings and horizontal stabilizer. ## Factual narrative On January 12, 1999, at 1153 central standard time, a Gulfstream Commander 695A, N20GT, experienced a hard landing on runway 16 (5,001' X 100' dry/asphalt) near Wheeling, Illinois. The airplane sustained substantial damage. The pilot said that the airframe had some ice contamination and that at the time of the accident there was a 10 knot tailwind. The pilot and three passengers reported no injuries. The 14 CFR Part 91 corporate flight was operating in visual meteorological conditions. The flight departed Columbus, Ohio, at 0930, with an IFR flight plan on file. During an interview with the pilot-in-command, he stated that the airplane was being flown by the owner from the left seat that the time of the hard landing. He said that he was acting as pilot-in-command and giving instruction the other pilot. He said that the landing was hard, but he did not realize that there was any damage until he exited the airplane and saw the wrinkling in the tailcone section of the airplane. He said that the landing was downwind and that there was an accumulation of about 1/8 inch of ice on the leading edges of the wing and horizontal stabilizer. He said there was about 3/16" to 1/4" on the windshield wipers. ## Aircraft - Registration: N20GT (not matched to a registry record) - Reported make and model: Gulfstream 695A - Category: Airplane - Serial number: 96036 - Airframe hours: 3973 - Engines: Garrett TPE331-10-511 840 horsepower turbo prop - Damage: Substantial damage - Flight: Executive/Corporate, Part 91 - Registered owner: Alsois Aviation Corp. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 14, 1998, 37 hours before - Departed: OSU, COLUMBUS, OH - Destination: PWK - Flight plan: IFR - Airport: PWK, Palwaukee Municipal, runway 16, 5,001 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 42; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 6,004 total, 44 in this make and model, 5,899 as pilot in command, 115 in the last 90 days, 44 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 340° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: 2,600 ft overcast - Temperature: 12 °F, dew point 3 °F - Altimeter: 29.00 inHg - Observed at: PWK ## 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 19990112013589A](https://openairdocs.org/incident/19990112013589A), Jan 12, 1999: Gulstm 695A, Chicago/Wheelin, IL, Substantial damage. (.19)On January 12, 1999, at 1153 central standard time, a gulfsteam commander 695A, N20GT, experienced a hard landing on runway 16 (5,001' x 100' dry/asphalt)… 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.