# NTSB NYC06CA001: Waco YMF, N89B, Kensington, NH, October 2, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 2, 2005, 17:45 local (21:45 UTC) - Place: Kensington, NH - Coordinates: 42.928333, -70.973052 - Nearby events: https://openairdocs.org/map.md?lat=42.9283&lon=-70.9731&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 31, 2006 - Report: Approved by Office Director - Parties: FAA Portland FSDO - NTSB case key (mKey): 62587 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC06CA001 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62587/pdf - Page: https://openairdocs.org/ntsb/NYC06CA001 ## Probable cause An overload fracture of the right main landing gear during the landing roll, which resulted in a nose over. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Gear collapsed, landing - landing gear,main gear attachment - overload (cause) - Nose over, landing - roll - terrain condition - grass ## Analysis The pilot and flight instructor were practicing soft field landings on the turf runway. During the landing rollout, the right main landing gear collapsed and the airplane nosed over. The right landing gear was fractured completely around a weld where the gear attached to the spindle assembly. Metallurgical examination of the fracture revealed features typical of an overstress separation, with no evidence of fatigue cracking. ## Factual narrative This report is based on information received by the NTSB. Additional details may be found in the NTSB's public docket for this case. For further information, please contact the NTSB Office of Public Inquiries. ## Aircraft - Registration: [N89B](https://openairdocs.org/aircraft/N89B), registered now, S/N F5-006, built 1987 (OpenAirDocs) - Reported make and model: Waco YMF - Registry model: [Classic WACO YMF](https://openairdocs.org/model/classic-waco-ymf) (registry code 2240101) (OpenAirDocs) - Registry engine: [Jacobs R755B series](https://openairdocs.org/engine/jacobs-r755b-series) (registry code 35007, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: F5-006 - Airframe hours: 2173 - Engines: Jacobs R775B 275 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Brian McDevitt - Airworthiness certificate: Standard, Aerobatic; Standard, Utility; Standard, Normal - Last inspection: Annual, October 1, 2004 - Departed: PSM, Portsmouth, NH - Destination: 06NH, Kensington, NH - Airport: 06NH, Cole Farm, runway 17, 1,900 × 35 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 45; injuries: none; flight instructor, commercial; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review May 1, 2005; seat: rear; flight hours: 7,623 total, 28 in this make and model, 7,494 as pilot in command, 480 in the last 90 days, 176 in the last 30 days, 6 in the last 24 hours - Pilot; age 50; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review September 1, 2004; seat: front; flight hours: 1,451 total, 8 in this make and model, 29 in the last 90 days, 18 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 130° at 3 knots - Visibility: 20 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 50 °F - Altimeter: 30.38 inHg - Observed at: PSM, 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 20051002026469A](https://openairdocs.org/incident/20051002026469A), Oct 2, 2005: Amtr WACOYMF, Kensington, NH, Substantial damage. (-23) On October 2, 2005, N89B experienced a separation of the r/h main wheel assy after initial touchdown at 06NH, grass strip. After bringing the aircraft… ## Other investigations on N89B (3) 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 ERA10CA076](https://openairdocs.org/ntsb/ERA10CA076), Nov 16, 2009: Classic Waco YMF (N89B), Dunnellon, FL, substantial damage. Probable cause: The certified flight instructor’s delayed response to the student pilot's loss of directional control while landing, which resulted in a ground-loop. Contributing to the accident was the student… - [NTSB MIA90LA098](https://openairdocs.org/ntsb/MIA90LA098), Mar 31, 1990: Waco YMF-5 (N89B), Marathon, FL, substantial damage. Probable cause: FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL DURING TAKEOFF, WHICH RESULTED IN AN INADVERTENT GROUND SWERVE. FACTORS RELATED TO THE ACCIDENT WERE: THE CROSSWIND, THE PILOT'S EXCESSIVE… - [NTSB MIA90IA020](https://openairdocs.org/ntsb/MIA90IA020), Oct 31, 1989: Classic YMF-5 (N89B), Marathon, FL, incident, minor damage. Probable cause: THE PILOT'S INCORRECT ELEVATOR CONTROL WHILE TAXIING WITH A QUARTERING TAILWIND. CONTRIBUTING TO THE INCIDENT WAS THE TAILWIND CONDITION. 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.