# ATC clearance procedure - Type: NTSB finding subsection - Path: [Environmental issues](https://openairdocs.org/ntsb-findings/03) › [Operating environment](https://openairdocs.org/ntsb-findings/0301) › [Air traffic/operating proc](https://openairdocs.org/ntsb-findings/030140) › ATC clearance procedure - NTSB code: 03014020 - Cases: 6 - In the probable cause: 6 - Fatal cases: 3 - All cases: https://openairdocs.org/ntsb-findings/03014020/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/03014020/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/03014020 ## Cases per year (in the probable cause / all) - 2010: 1 / 1 - 2012: 2 / 2 - 2013: 1 / 1 - 2016: 1 / 1 - 2024: 1 / 1 ## Defining events in these cases - [Inflight upset](https://openairdocs.org/ntsb-events/271): 1 cases - [Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241): 1 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1 cases - [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 1 cases - [Ground collision](https://openairdocs.org/ntsb-events/200): 1 cases - [Air traffic event](https://openairdocs.org/ntsb-events/100): 1 cases ## Aircraft models (registry) - [Aviat S-2C](https://openairdocs.org/model/aviat-s-2c): 1 cases - [Piper PA-32R-300](https://openairdocs.org/model/piper-pa-32r-300): 1 cases - [Piper PA-28-236](https://openairdocs.org/model/piper-pa-28-236): 1 cases - [Mooney M20J](https://openairdocs.org/model/mooney-m20j): 1 cases - [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 1 cases - [Cessna 172S](https://openairdocs.org/model/cessna-172s): 1 cases - [Beech V35](https://openairdocs.org/model/beech-v35): 1 cases ## Other findings in the same cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 2 cases - [Oversight of personnel](https://openairdocs.org/ntsb-findings/04032010) (Organizational issues): 1 cases - [Safety](https://openairdocs.org/ntsb-findings/04024010) (Organizational issues): 1 cases - [Availability of policy/proc](https://openairdocs.org/ntsb-findings/04021010) (Organizational issues): 1 cases - [Rain](https://openairdocs.org/ntsb-findings/03035035) (Environmental issues): 1 cases - [Low ceiling](https://openairdocs.org/ntsb-findings/03035010) (Environmental issues): 1 cases - [Downdraft](https://openairdocs.org/ntsb-findings/03034035) (Environmental issues): 1 cases - [Convective turbulence](https://openairdocs.org/ntsb-findings/03032020) (Environmental issues): 1 cases - [Mountainous/hilly terrain](https://openairdocs.org/ntsb-findings/03021010) (Environmental issues): 1 cases - [Weather radar](https://openairdocs.org/ntsb-findings/03015025) (Environmental issues): 1 cases ## Newest cases - [NTSB ERA24FA217](https://openairdocs.org/ntsb/ERA24FA217), May 15, 2024: Beech V35 (N47WT), Franklin, TN, destroyed, 3 fatal. Probable cause: The pilot’s flight into convective weather, which resulted in a loss of control due to spatial disorientation and a subsequent inflight breakup of the airplane. Contributing to the accident was the… - [NTSB ERA16LA225](https://openairdocs.org/ntsb/ERA16LA225), Jun 17, 2016: Piper PA 28-236 (N8161X), Punta Gorda, FL, substantial damage. Probable cause: The tower controller’s failure to identify and mitigate jet blast from an airplane conducting an engine test run, and the effect of the jet blast on landing traffic, which resulted in a runway… - [NTSB WPR14LA025](https://openairdocs.org/ntsb/WPR14LA025), Oct 20, 2013: Aviat S2 (N15TA), Livermore, CA, substantial damage. Probable cause: Failure of the pilots of the Pitts airplane to maneuver the airplane as necessary to observe the taxi route and avoid the Cessna airplane ahead. Contributing to the accident was the local… - [NTSB ERA13LA042](https://openairdocs.org/ntsb/ERA13LA042), Oct 28, 2012: Piper PA-32R-300 (N4478F), Sevierville, TN, substantial damage. Probable cause: The air traffic controller’s failure to comply with the required vectoring and safety alert procedures, which resulted in the airplane’s flight into rising terrain. Contributing to the accident was… - [NTSB ERA12FA196](https://openairdocs.org/ntsb/ERA12FA196), Feb 29, 2012: Cirrus Design SR22 (N544SR), Melbourne, FL, substantial damage, 3 fatal. Probable cause: The pilot's abrupt maneuver in response to a perceived traffic conflict, which resulted in an accelerated stall and a loss of airplane control at low altitude. Contributing to the accident was the… - [NTSB WPR11FA032](https://openairdocs.org/ntsb/WPR11FA032), Oct 25, 2010: Mooney M20J (N201HF), Lander, WY, substantial damage, 4 fatal. Probable cause: The pilot's decision to depart into known adverse weather conditions over mountainous terrain, which required operation near the limits of the airplane's performance capability and which resulted in… NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted. Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1). NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names. --- 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.