# NTSB SEA03LA108: McCarty Avid Magnum, N64KM, Renton, WA, June 17, 2003 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 16, 2003, 19:05 local (Jun 17, 2003, 02:05 UTC) - Place: Renton, WA - Coordinates: 47.488887, -122.214721 - Nearby events: https://openairdocs.org/map.md?lat=47.4889&lon=-122.2147&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 2, 2004 - Report: Approved by Office Director - Parties: FAA FSDO - NTSB case key (mKey): 57256 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA03LA108 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/57256/pdf - Page: https://openairdocs.org/ntsb/SEA03LA108 ## Probable cause The flight instructor's unexpected encounter with control interference when the student applied brakes during the landing roll. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Nose down, landing - roll - control interference - encountered, pilot in command(cfi) (cause) - brakes(normal) - inadvertent activation, dual student (cause) - supervision - inadequate, pilot in command(cfi) (contributing factor) ## Analysis The instructor (right seat), accompanied by a student (left seat) were on final approach in the Avid Magnum tail wheel equipped aircraft when the instructor announced "my airplane." The student responded "your airplane." During the landing roll the student applied brakes and the aircraft nosed down. The pilot reported that he experienced no mechanical malfunction with the aircraft during the event. ## Factual narrative On June 16, 2003, at 1905 Pacific daylight time, a homebuilt McCarty Avid Magnum tail wheel equipped aircraft, N64KM, registered to and being flown by a commercially rated flight instructor, and accompanied by a student pilot, sustained substantial damage when the aircraft nosed down on landing roll on runway 33 at the Renton Municipal airport, Renton, Washington. Neither occupant was injured. Visual meteorological conditions existed and no flight plan had been filed. The flight, which was personal, was operated under 14CFR91, and had originated at the Renton airport approximately 1830. The pilot reported in a telephone interview that upon landing rollout, approximately one-third to one-half down the runway the tail started coming up and he was unable to stop it. The aircraft slid to a stop in a nose down condition and both occupants exited the aircraft. Winds at Renton at 1912 were reported from 310 degrees magnetic at 9 knots and the pilot reported that he experienced no mechanical malfunction with the aircraft during the event. The pilot subsequently reported (refer to attached NTSB Form 6120.1) that he was occupying the right seat and a student was in the left seat when, at two miles out on final he announced to the student "my airplane." The student responded "your airplane." During the landing roll the student applied brakes resulting in the aircraft nosing down. ## Aircraft - Registration: [N64KM](https://openairdocs.org/aircraft/N64KM), registered now, S/N KM-2, built 1997 (OpenAirDocs) - Reported make and model: McCarty Avid Magnum - Registry model: [Mccarty Kirk AVID MAGNUM](https://openairdocs.org/model/mccarty-kirk-avid-magnum) (registry code 05603BI) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: KN-2 - Airframe hours: 360 - Engines: Lycoming O-360-A4M 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: McCarty, Kirk A. - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Continuous airworthiness, June 14, 2003, 0 hours before - Departed: RNT, Renton, WA - Destination: RNT - Airport: RNT, Renton Municipal, runway 33, 5,379 × 200 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 66; injuries: none; flight instructor, commercial; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; last flight review July 1, 2002; seat: right; flight hours: 1,020 total, 360 in this make and model, 900 as pilot in command, 30 in the last 90 days, 15 in the last 30 days - Student pilot; age 56; injuries: none; student; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 0 total ## Weather - Conditions: Visual (VMC), Day - Wind: 310° at 9 knots - Visibility: 10 statute miles - Temperature: 77 °F, dew point 46 °F - Altimeter: 30.04 inHg - Observed at: RNT ## 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 20030617015249A](https://openairdocs.org/incident/20030617015249A), Jun 17, 2003: Amtr AVIDMAGNUM, Renton, WA, Substantial damage. (-23) Pilot stated that a bounced landing onto runway 33 at Renton Municipal Airport, Renton, Washington had occurred, but the aircraft was below flying speed… ## Other investigations on N64KM (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 SEA98LA143](https://openairdocs.org/ntsb/SEA98LA143), Jul 18, 1998: McCarty Avid Magnum (N64KM), Kalispell, MT, substantial damage. Probable cause: The pilot's inadequate compensation for the wind conditions. A factor was gusty wind conditions. 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.