# NTSB MIA04LA011: Let NP Kinovice Z37A, N137MS, Oak Hill, FL, October 24, 2003 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: October 24, 2003, 18:24 local (22:24 UTC) - Place: Oak Hill, FL - Coordinates: 28.856945, -80.906944 - Nearby events: https://openairdocs.org/map.md?lat=28.8569&lon=-80.9069&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious, 1 minor - Status: Completed, report April 28, 2005 - Report: Approved by Office Director - Parties: Orlando FSDO - 15 - NTSB case key (mKey): 58240 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA04LA011 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/58240/pdf - Page: https://openairdocs.org/ntsb/MIA04LA011 ## Probable cause The pilots failure to maintain airspeed while maneuvering to re-enter the pattern resulting in an inadvertent stall and impact with trees and the ground during the subsequent uncontrolled descent. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, approach - vfr pattern - base turn - airspeed(vs) - not maintained, pilot in command (cause) - stall/spin - inadvertent, pilot in command - In flight collision with object, descent - uncontrolled - object - tree(s) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The pilot stated he was in slow flight at 250 feet above ground level in the traffic pattern on a heading of northwest flying away from the runway when the right wing abruptly dropped. He first pushed the nose of the airplane forward, added power and opposite aileron, and then he applied rudder. He did not recover due to the low altitude. The FAA inspector who responded to the accident stated the pilot turned left base, for runway 18 when he noticed he was too close to the approach end of the runway. He elected to make a right turn to re-enter the traffic pattern. The airplane was on a heading of approximately 330-degrees when it stalled and spun to the right. During the uncontrolled descent the airplane rotated approximately 240 degrees before striking branches of a tree and then impacted the ground nose first. ## Factual narrative On October 24, 2003, about 1824 eastern daylight time, an experimental (exhibition) Let NP Kinovice Z37A, N137MS, registered to and operated by a private owner as a Title 14 CFR Part 91 personal flight, impacted with the ground while entering the traffic pattern for the Blue Ridge Flightpark Airport, Oak Hill, Florida. Visual meteorological conditions prevailed at the time, and no flight plan was filed. The private-rated pilot reported serious injuries, and one passenger reported minor injuries, and the airplane incurred substantial damage. The flight originated from the Blue Ridge Flightpark, a few minutes before the accident. The pilot stated he was in slow flight at 250 feet above ground level in the traffic pattern on a heading of northwest, flying away from the runway when the right wing abruptly dropped. He first pushed the nose of the airplane forward, added power and opposite aileron, and then he applied rudder. He did not recover do to the low altitude. The FAA inspector who responded to the accident stated the pilot turned left base, for runway 18 when he noticed he was too close to the approach end of the runway. He elected to make a right turn to re-enter the traffic pattern. The airplane was on a heading of approximately 330-degrees when it stalled and spun to the right. During the uncontrolled descent the airplane rotated approximately 240 degrees before striking branches of a tree and then impacted the ground nose first. ## Aircraft - Registration: [N137MS](https://openairdocs.org/deregistered/N137MS-2007-03-12), registration cancelled 2007-03-12, S/N 14-05, built 1971 (OpenAirDocs) - Reported make and model: LET NP Kinovice Z37A - Registry model: [Let N P Kinovice Z37A](https://openairdocs.org/model/let-n-p-kinovice-z37a) (registry code 056106B) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane - Serial number: 14-05 - Engines: Avia M462RF 315 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Kurt Grasso - Registered owner: Mark Schrick - Airworthiness certificate: Special, Experimental (Special) - Departed: 2FD6, Oak Hill, FL - Destination: Oak Hill, FL - Airport: 34FD, Blue Ridge Airpark Airport, runway 170, 3,335 × 100 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; injuries: serious; private; airplane ratings: single-engine land; medical: class 3; last flight review December 31, 2002; seat: front; flight hours: 5,000 as pilot in command, 20 in the last 90 days, 5 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 70° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 79 °F, dew point 66 °F - Altimeter: 30.10 inHg - Observed at: KDAB ## 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 20031024037449A](https://openairdocs.org/incident/20031024037449A), Oct 24, 2003: Amtr Z37A, Oak Hill, FL, Substantial damage. (-23) After making a low pass over runway 18 at blueridge airport, located near Oak Hill, Florida, the pilot of let, N137MS, re-entered the traffic pattern to… 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.