# NTSB CHI99LA061: Beech BE-V35B, N740T, Olathe, KS, January 6, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: January 6, 1999, 15:30 local (21:30 UTC) - Place: Olathe, KS - Location: 38.8476° N, 94.7376° W: Placed by OpenAirDocs at JOHNSON COUNTY EXEC (OJC), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=38.8476&lon=-94.7376&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report June 22, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 45575 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99LA061 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/45575/pdf - Page: https://openairdocs.org/ntsb/CHI99LA061 ## Probable cause The pilot's continued flight into adverse weather that resulted in structural icing and subsequently an aerodynamic stall on landing flare. A factor was the pilot's inadequate weather evaluation . ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, landing - weather condition - icing conditions - flight into adverse weather - continued, pilot in command (cause) - weather evaluation - inadequate, pilot in command (contributing factor) - remedial action - not performed, pilot in command (contributing factor) - stall - encountered, pilot in command (contributing factor) - Gear collapsed, landing - flare/touchdown - landing gear - overload (cause) - Loss of control - on ground/water, landing ## Analysis The pilot reported that he was cleared to 4,000 feet msl at his request. Approximately 40 miles southwest of Johnson County Executive Airport, Olathe, Kansas, the pilot noticed clear ice forming on the windshield and the wing's leading edge. He added that the rime ice build up was three inches thick. The pilot stated that he flew the localizer 36 approach at 120 mph and as he crossed the threshold of runway 36, approximately 20 feet above the runway surface, he started to 'round out and the airplane immediately stalled and hit hard'. The aircraft came to rest on the right side approach end of runway 36 where the right main and nose landing gear were found collapsed. At 1553, the Johnson County Executive Airport automated surface observing system recorded a surface temperature of -2 degrees Celsius and an overcast cloud layer at 2,200 feet msl. Advisory circular 00-6A, Aviation weather states, '...all clouds at subfreezing temperatures have icing potential. However, drop size, drop distribution, and aerodynamic effects of the aircraft influence ice formation.' AC 00-6A also states, '...If your aircraft is not equipped with deicing or anti-icing equipment, avoid areas of icing. Water (clouds or precipitation) must be visible and outside air temperature must be near zero degrees Celsius or colder for structural ice to form.' Post accident examination of the aircraft revealed 3/4-inch thick rime ice on the aircraft's wing and empennage leading edges. ## Factual narrative On January 6, 1999, at 1530 central standard time, a Beech V35B, N740T, owned and piloted by a commercial pilot, received substantial damage on impact with terrain during a hard landing on runway 36 (4,099 feet by 75 feet, dry concrete) at the Johnson County Executive Airport (OJC), Olathe, Kansas. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 personal flight was operating on an instrument flight plan. The pilot reported no injuries. The flight departed Coffey County Airport (UKL), Burlington, Kansas, at 1456, and was en route to OJC. The pilot reported that he was cleared to 4,000 feet msl at his request following departure from UKL. At approximately 40 miles southwest of OJC, the pilot noticed clear ice forming on the windshield and leading edge of the wing. He added that the rime ice build up was three inches thick. The pilot stated that he flew the localizer 36 approach at 120 mph and as he crossed the threshold at approximately 20 feet above the runway surface, he started to "round out and the airplane immediately stalled and hit hard". The aircraft came to rest 200 feet north and 60 feet east of the approach end of runway 36 where the right main and nose landing gear were found collapsed. At 1553, the OJC automated surface observing system recorded a surface temperature of -2 degrees Celsius and an overcast cloud layer at 2,200 feet msl. Advisory circular 00-6A, Aviation weather states, "...all clouds at subfreezing temperatures have icing potential. However, drop size, drop distribution, and aerodynamic effects of the aircraft influence ice formation." AC 00-6A also states, "...If your aircraft is not equipped with deicing or anti-icing equipment, avoid areas of icing. Water (clouds or precipitation) must be visible and outside air temperature must be near ) degrees Celsius or colder for structural ice to form." Postaccident photos of the aircraft revealed approximately 3/4-inch thick rime ice on the aircraft's wing and empennage leading edges. ## Aircraft - Registration: N740T (not matched to a registry record) - Reported make and model: Beech BE-V35B - Category: Airplane - Serial number: D9850 - Airframe hours: 2721 - Engines: Continental IO-520BA 250 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Arron S Wolkoff - Airworthiness certificate: Standard, Utility - Last inspection: Annual, March 3, 1998, 54 hours before - Departed: UKL, BURLINGTON, KS - Destination: OJC - Flight plan: IFR - Airport: OJC, Johnson County Executive, runway 36, 4,099 × 75 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 77; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 6,740 total, 4,500 in this make and model, 6,750 as pilot in command, 25 in the last 90 days, 10 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 360° at 16 knots, gusting 24 - Visibility: 10 statute miles - Lowest ceiling: 2,200 ft overcast - Temperature: 28 °F, dew point 19 °F - Altimeter: 30.00 inHg - Observed at: OJC ## 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 19990106000229A](https://openairdocs.org/incident/19990106000229A), Jan 6, 1999: Beech V35B, Olathe, KS, Substantial damage. Pilot reported ice on the windshield and landed short of the rwy. Other circumstances are unknown. (.19) on January 6, 1999, at 1530 central standard time, a… 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.