# NTSB CHI96LA305: Taylorcraft 19, N6630N, Shakopee, MN, August 18, 1996 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 18, 1996, 16:00 local (21:00 UTC) - Place: Shakopee, MN - Coordinates: 44.769283, -93.469352 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.7693&lon=-93.4694&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report December 23, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 10370 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI96LA305 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10370/pdf - Page: https://openairdocs.org/ntsb/CHI96LA305 ## Probable cause failure of the right main landing gear shock strut due to internal corrosion. The restriction to inspection of the strut was a related factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Main gear collapsed, landing - roll - landing gear,main gear shock absorbing strut - corroded (cause) - maintenance,inspection - restricted (contributing factor) - Nose over, landing - roll ## Analysis During the landing, the right main landing gear collapsed, and the airplane nosed over. Examination of the landing gear strut revealed that the bungee cord attach tube had failed from internal corrosion. This area was not visible during normal preflight and was difficult to see during an annual inspection. The airframe had accumulated 2,212 hours since new and 37 hours since the last annual inspection. The investigation did not determined when the last bungee cord was replaced. ## Factual narrative On August 18, 1996, at 1600 central daylight time, a Taylorcraft 19, N6630N, sustained substantial damage on landing on runway 9 (2,640' x 100' dry/turf), near Shakopee, Minnesota. The pilot reported that the right main landing gear dug into the terrain and the airplane nosed over. The pilot and two passengers reported no injuries. The personal 14 CFR Part 91 flight was operating in visual meteorological conditions. No flight plan was on file. The airplane departed the same airport on a local flight about 1500 for a local flight. The pilot stated that during rollout at approximately 30 MPH the right main landing gear collapsed and the airplane nosed over. A subsequent examination found that the bungee cord attach tubing to the right main landing gear had failed from internal corrosion. This tube is not visible during normal pre-flight nor is it easily examined during an annual inspection because it is covered by the bungee cord which is only removed for replacement. The time in service for the airplane was 2,212 hours. It had been 37 hours since the last annual on August 2, 1995. Total time on the bungee cords was not determined. ## Aircraft - Registration: [N6630N](https://openairdocs.org/deregistered/N6630N-1997-04-17), registration cancelled 1997-04-17, S/N 413030 (OpenAirDocs) - Reported make and model: Taylorcraft 19 - Registry model: [Taylorcraft 19](https://openairdocs.org/model/taylorcraft-19) (registry code 8850902) (OpenAirDocs) - Category: Airplane - Serial number: 4-13030 - Airframe hours: 2212 - Engines: Continental C-85-12F 85 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Joe J. Koskovich - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 2, 1995, 37 hours before - Departed: NONE - Airport: NONE, Valley View, runway 9, 2,640 × 100 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 76; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 30,100 total, 2,000 in this make and model, 30,100 as pilot in command, 6 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 130° at 13 knots - Visibility: 8 statute miles - Lowest ceiling: 3,000 ft overcast - Altimeter: 30.00 inHg - Observed at: KFC, 3 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 19960818028659A](https://openairdocs.org/incident/19960818028659A), Aug 18, 1996: Tcraft 19, Shakopee, MN, Substantial damage. Right main gear collapsed on landing roll. Attach stud failed from poor weld. No medical. Third passenger no seat. (-23) upon rollout from landing on pvt.… ## Other investigations on N6630N (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 MKC66D0166](https://openairdocs.org/ntsb/MKC66D0166), Aug 4, 1965: Taylorcraft 19 (N6630N), Eagle Grove, IA, 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.