# NTSB FTW98LA247: Cessna 150G, N6256S, Claremore, OK, May 28, 1998 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: May 28, 1998, 12:30 local (17:30 UTC) - Place: Claremore, OK - Coordinates: 36.310184, -95.610954 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.3102&lon=-95.6110&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 2 minor - Status: Completed, report February 15, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 20631 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW98LA247 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20631/pdf - Page: https://openairdocs.org/ntsb/FTW98LA247 ## Probable cause The pilot's failure to maintain obstacle clearance. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, go-around (vfr) - object - tree(s) - clearance - not maintained, pilot in command(cfi) (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis During a go-around, following a bounced landing, the airplane impacted trees approximately 1/2 mile from the departure end of the runway. According to the student, he and the instructor were practicing touch and go landings on runway 22. Following the student's bounced landing, the instructor took control and executed a go-around. The student reported that after the airplane climbed above the trees off the end of the runway, the instructor retracted the flaps, and the airplane sank into the trees. According to the instructor, he was unable to maintain altitude 'due to mechanical turbulence above the trees.' The instructor reported that the winds were variable but predominantly from the south. Reported winds at Tulsa, 13 nm west of the accident site, were from 120 degrees at 5 knots. ## Factual narrative On May 28, 1998, approximately 1230 central daylight time, a tailwheel-equipped Cessna 150G airplane, N6256S, registered to and operated by Sam Riggs Flying Service, sustained substantial damage when it impacted trees during a go-around at Sam Riggs Airpark, Claremore, Oklahoma. The flight instructor and the student, who held a South African private pilot certificate, sustained minor injuries. No flight plan was filed and visual meteorological conditions prevailed for the Title 14 CFR Part 91 local instructional flight. During a personal interview, conducted by an FAA inspector, the student pilot reported that he and the instructor were practicing touch and go landings on runway 22. The student stated that following a bounced landing, the instructor took control of the airplane and executed a go-around. He further reported that after the airplane climbed above the trees off the end of the runway, the instructor retracted the flaps, and the airplane sank into the trees. In a written statement, the flight instructor stated that the "student bounced, [and] threw his hands up in the air saying that it is difficult to fly a taildragger." The instructor further stated that he took control and "managed to climb above the pecan trees, but [he] couldn't stay at altitude due to the mechanical turbulence above the trees." The airplane was "loosing height," and he elected "to put the aircraft between branches to cushion the impact." The pilot reported that the "winds were variable but predominantly from the south." The operator reported that the wind was from the south at 3 mph. At 1253, the reported winds at Tulsa International Airport, located 13 nautical miles west of the accident site, were from 120 degrees at 5 knots. Examination of the accident site by FAA inspectors revealed that the airplane came to rest about 1/2 mile from the departure end of runway 22 in heavily wooded terrain. The tail section remained attached to the fuselage only by control cables, and both wings sustained structural damage. The flaps were found in the retracted position. ## Aircraft - Registration: [N6256S](https://openairdocs.org/deregistered/N6256S-2014-11-12), registration cancelled 2014-11-12, S/N 15067056, built 1967 (OpenAirDocs) - Reported make and model: Cessna 150G - Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (registry code 2071816) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15067056 - Airframe hours: 4441 - Engines: Continental O-200 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Sam Riggs Flying Service - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, March 18, 1998, 46 hours before - Departed: K11 - Airport: K11, Sam Riggs Airpark, runway 22, 3,200 × 35 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 46; flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 2,700 total, 2,600 as pilot in command, 65 in the last 90 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 120° at 5 knots - Visibility: 8 statute miles - Lowest ceiling: 25,000 ft broken - Temperature: 81 °F, dew point 68 °F - Altimeter: 29.00 inHg - Observed at: TUL, 13 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 19980528011269A](https://openairdocs.org/incident/19980528011269A), May 28, 1998: Cessna 150G, Claremore, OK, Substantial damage. Student bounced landing CFI took over. Began go around climbed over trees dumped flaps. Settled into trees.(.4) during a go-around, following a bounced… ## Other investigations on N6256S (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 FTW77DPG44](https://openairdocs.org/ntsb/FTW77DPG44), Jun 11, 1977: Cessna 150G (N6256S), Arkadelphia, AR, 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.