# NTSB CEN21FA025: Beech V35, N35DC, Slidell, LA, October 21, 2020 - Type: NTSB accident investigation - Classification: Accident · Fatal · Class 3 · Field · Final report - Date: October 21, 2020, 14:31 local (19:31 UTC) - Place: Slidell, LA - Coordinates: 30.355421, -89.823368 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=30.3554&lon=-89.8234&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: Fatal - Injuries: 1 fatal - Status: Completed - Report: Approved by Office Director - Investigation class: Class 3 - NTSB office: Central Region - Parties: Textron Aviation, Federal Aviation Administration - NTSB case key (mKey): 102176 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN21FA025 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102176/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102176 - Page: https://openairdocs.org/ntsb/CEN21FA025 ## Probable cause The pilot’s loss of control shortly after departure for reasons that could not be determined based on the available information. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Beech V35A, 3 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=1151544), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Beech V35A, 7 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=1151544), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Beech V35A, 6 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=1151544), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) ## Analysis The pilot and flight instructor had just completed a one-hour uneventful local flight to test the recently-repaired autopilot. The pilot landed the airplane, dropped off the instructor at the terminal, and then taxied away. Minutes later the airplane departed to the north, reached about 200 ft above the ground, and entered a left turn. The airplane subsequently descended into trees and terrain and a postimpact fire consumed most of the airplane. There were no witnesses to the accident, and about 4 hours after the accident smoke from the wreckage was reported by another pilot. Examination of the wreckage did not reveal any preimpact mechanical malfunctions or anomalies that would have precluded normal operation; the accident site was consistent with a steep, nose-low descent with the engine producing power. The medical investigation in this case revealed that the pilot had a history of significant coronary artery disease with stents and had used a sedating medication (cetirizine) at some time before the flight; however, whether the pilot’s heart condition or use of sedating medication contributed to the accident could not be determined based on the available information. The evidence at the accident site and the lack of mechanical anomalies are consistent with a loss of control during takeoff; however, the reason for the loss of control could not be determined. ## Factual narrative On October 21, 2020, at 1431 central daylight time, a Beech V35A airplane, N35DC, was destroyed when it was involved in an accident near Slidell Airport (ASD), Slidell, Louisiana. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot’s flight instructor reported that the pilot did not fly often but was interested in renewing his instrument currency. The pilot told him that the airplane’s autopilot was recently repaired, and he wanted to test its functionality. On the day of the accident, the pilot landed at ASD, and the instructor boarded the airplane while the engine remained running. After departure from ASD, the pilot completed two GPS approaches at a nearby airport. The instructor reported that the engine was operating normally, but the autopilot “would not track the course in NAV mode.” They returned to ASD, landed, and dropped off the instructor on the ramp. The instructor entered the airport terminal and did not see the airplane depart. He added that the pilot was relaxed and under no apparent stress. A pilot-rated witness at the airport stated that he observed the airplane as it taxied to runway 36, then continued into a takeoff roll. His view of the airplane was partially blocked by buildings, but he could hear the engine. The airplane climbed slowly and did not exhibit any anomalies, and he did not hear anything unusual with the engine. He looked away briefly and did not see the airplane again. A review of the Automatic Dependent Surveillance – Broadcast (ADS-B) data revealed that the airplane departed ASD at 1315 and proceeded north. The flight track showed that the airplane maneuvered north of ASD for about 1 hour, then appeared to land at ASD at 1421. The flight track continued again at 1431:32 as the airplane departed from runway 36. After the airplane crossed the departure end of runway 36, it turned left. The final ADS-B point was recorded at 1431:47, about 200 ft above ground level. A pilot who departed ASD at 1830 reported that he observed smoke and fire in the woods to the northwest of the airport. When the fire department arrived to extinguish the burning trees that surrounded the airplane, they reported that the airplane was no longer on fire and was cold to the touch. The 73-year-old male pilot had reported to the FAA a long history of coronary artery disease and its treatment with stenting and medications. At the time of the accident, he was certified via BasicMed. An autopsy of the pilot was performed by the St. Tammany Parish Coroner’s Office, St. Tammany Parish, Louisiana. The cause of death was multiple blunt force injuries, and the manner of death was accident. Toxicology testing performed by the FAA’s Forensic Sciences Laboratory identified cetirizine and metoprolol in muscle tissue. Review of personal medical records showed slow progression of coronary artery disease, high blood pressure, high cholesterol, and heartburn and the use ofmedications to treat these conditions. At a visit a few weeks before the accident, the pilot did not report any cardiovascular symptoms. The accident site was located on the north side of the airport, about 1,300 ft from the departure end of runway 36. The airplane impacted densely wooded terrain in a nose-low attitude and came to rest upright. A postimpact fire consumed the engine compartment, cockpit, forward fuselage, and left wing. The rest of the airplane sustained thermal damage and distress. Figure 1 shows the accident airplane where it came to rest in the woods. Figure 1. Aerial view of the accident site. The wreckage is surrounded by trees. In front of the wreckage was an impact crater. Several trees and tree limbs in the wreckage path exhibited slashes and cuts, consistent with being cut by rotating propeller blades. The cabin door was found about 15 ft from the fuselage and sustained minimal damage. The door latch mechanism revealed the handle was in the latched position. The upper hook was fractured, and the aft latch was displaced inward and down. The seatbelt buckles in the wreckage were lap belt, two-point style buckles. Flight control continuity was established from the cockpit to each control surface with no anomalies noted. The flap actuators were fire-damaged, and their preaccident positions could not be determined. The right flap was found retracted, and the left flap position could not be determined due to the fire damage. The fuel selector valve was positioned to the right fuel tank. The autopilot components were destroyed by the fire; therefore, a full examination was not possible. An examination of the engine revealed impact and fire damage to most of the engine and components. The propeller spinner was crushed against the propeller hub and the blades were bent backward in a manner consistent with a high angle, high velocity impact. There were no mechanical malfunctions or anomalies noted with the engine that would have precluded normal operation. ## Aircraft - Registration: [N35DC](https://openairdocs.org/deregistered/N35DC-2023-03-04), registration cancelled 2023-03-04, S/N D-8847, built 1968 (OpenAirDocs) - Reported make and model: BEECH V35 (A) - Registry model: [Beech V35A](https://openairdocs.org/model/beech-v35a) (registry code 1151544) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: D-8847 - Year built: 1968 - Engines: Continental Motors IO-520-B 285 horsepower reciprocating - Damage: Destroyed - Fire: On-Ground - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 1, 2020 - Destination: NEW, New Orleans, LA - Airport: ASD, Slidell Airport, runway 36, 5,002 × 100 ft, asphalt - Equipment: Stall warning system, Auto-pilot, ADS-B ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 73; injuries: fatal; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: basicmed; last flight review October 21, 2020; seat: left; toxicology performed; flight hours: 1,570 total ## Weather - Conditions: Visual (VMC), Day - Wind: 30° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: 6,000 ft broken - Temperature: 86 °F, dew point 70 °F - Altimeter: 30.04 inHg - Observed at: KASD, 1 nm away - METAR: KASD 211853Z AUTO 03008KT 10SM FEW032 SCT043 BKN060 30/21 A3004 RMK AO2 SLP173 T03000206 ## 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 20201021017649A](https://openairdocs.org/incident/20201021017649A), Oct 21, 2020: Beech V35A, Slidell, LA, Destroyed, 1 fatal. Aircraft took off from Slidell airport. Upon rotation aircraft climbed, banked left, inverted and impacted ground. ## Docket (13 files) The files NTSB released with the investigation on February 22, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102176. 39.4 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 6.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11854924&FileExtension=pdf&FileName=6120%20-%20Owner%20Blazek_Redacted%202-Rel.pdf - Witness statement - flight instructor (item 2, PDF, 2 pages, 258 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11854857&FileExtension=pdf&FileName=CFI%20statement_Redacted-Rel.pdf - Witness statement (item 3, PDF, 5 pages, 8.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11675683&FileExtension=pdf&FileName=Witness%20email%20statement2_Redacted-Rel.pdf - FAA inspector's statement - engine examination (item 4, PDF, 2 pages, 75 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11855053&FileExtension=pdf&FileName=Inspector%20Statement%20engine%20exam%202_Redacted-Rel.pdf - Reports from parties to the investigation - Textron (item 5, PDF, 7 pages, 164 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12267213&FileExtension=pdf&FileName=Textron%20Report_Redacted-Rel.pdf - Photos (item 6, PDF, 14 pages, 15.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12794580&FileExtension=pdf&FileName=Photos-Rel.pdf - Maintenance information (item 7, PDF, 4 pages, 5.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12794359&FileExtension=pdf&FileName=Maintenance%20documents%20and%20emails_Redacted-Rel.pdf - NTSB medical factual report (item 8, PDF, 3 pages, 138 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12266874&FileExtension=pdf&FileName=CEN21FA025_Medical%20Factual%20Report-Rel.pdf - Autopsy memo for record (item 9, PDF, 1 page, 114 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12267314&FileExtension=pdf&FileName=Autopsy%20Memo%20for%20Record-Rel.pdf - Toxicological report (item 10, PDF, 1 page, 143 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11676057&FileExtension=pdf&FileName=Tox%20-%20Pilot_Redacted-Rel.pdf - Release of aircraft wreckage, NTSB form 6120.15 (item 11, PDF, 1 page, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12143157&FileExtension=pdf&FileName=Wreckage%20Release%20(signed)_Redacted-Rel.pdf - ADS-B data flight 1 (item 12, XLSX, 661 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12794280&FileExtension=xlsx&FileName=20201021_A3E2C2_438557631_ADSB%20flight%201-Rel.xlsx - ADS-B data flight 2 (accident flight) (item 13, XLSX, 900 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12794428&FileExtension=xlsx&FileName=20201021_A3E2C2_438560655_ADSB%20accident%20flight-Rel.xlsx 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.