# Equipment monitoring - Type: NTSB finding subsection - Path: [Organizational issues](https://openairdocs.org/ntsb-findings/04) › [Support/oversight/monitoring](https://openairdocs.org/ntsb-findings/0403) › [Oversight](https://openairdocs.org/ntsb-findings/040320) › Equipment monitoring - NTSB code: 04032025 - Cases: 7 - In the probable cause: 5 - Fatal cases: 3 - All cases: https://openairdocs.org/ntsb-findings/04032025/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/04032025/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/04032025 ## Cases per year (in the probable cause / all) - 2008: 1 / 1 - 2015: 2 / 2 - 2021: 0 / 2 - 2023: 1 / 1 - 2025: 1 / 1 ## Defining events in these cases - [Fuel contamination](https://openairdocs.org/ntsb-events/193): 2 cases - [Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470): 1 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases - [Runway excursion](https://openairdocs.org/ntsb-events/300): 1 cases - [Midair collision](https://openairdocs.org/ntsb-events/250): 1 cases - [Hard landing](https://openairdocs.org/ntsb-events/092): 1 cases ## Aircraft models (registry) - [Taylorcraft BC12-D](https://openairdocs.org/model/taylorcraft-bc12-d): 1 cases - [Eurocopter AS 350 B3](https://openairdocs.org/model/eurocopter-as-350-b3): 1 cases - [Learjet 60](https://openairdocs.org/model/learjet-60): 1 cases - [Cessna 170B](https://openairdocs.org/model/cessna-170b): 1 cases - [Bombardier CL-600-2C10](https://openairdocs.org/model/bombardier-cl-600-2c10): 1 cases - [Bell 206B](https://openairdocs.org/model/bell-206b): 1 cases - [Beech C35](https://openairdocs.org/model/beech-c35): 1 cases ## Other findings in the same cases - [Between groups/organizations](https://openairdocs.org/ntsb-findings/04025020) (Organizational issues): 2 cases - [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 2 cases - [Adequacy of safety program](https://openairdocs.org/ntsb-findings/04035015) (Organizational issues): 1 cases - [Regulatory requirements](https://openairdocs.org/ntsb-findings/04034020) (Organizational issues): 1 cases - [Oversight of maintenance](https://openairdocs.org/ntsb-findings/04032020) (Organizational issues): 1 cases - [Oversight of operation](https://openairdocs.org/ntsb-findings/04032015) (Organizational issues): 1 cases - [Oversight of personnel](https://openairdocs.org/ntsb-findings/04032010) (Organizational issues): 1 cases - [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 1 cases - [Availability of policy/proc](https://openairdocs.org/ntsb-findings/04021010) (Organizational issues): 1 cases - [Equip certification/testing](https://openairdocs.org/ntsb-findings/04012015) (Organizational issues): 1 cases ## Newest cases - [NTSB DCA25MA108](https://openairdocs.org/ntsb/DCA25MA108), Jan 30, 2025: Bombardier CL-600-2C10 (N709PS), Washington, DC, destroyed, 67 fatal. Probable cause: The Federal Aviation Administration’s (FAA) placement of a helicopter route in close proximity to a runway approach path; their failure to regularly review and evaluate helicopter routes and… - [NTSB WPR24LA069](https://openairdocs.org/ntsb/WPR24LA069), Dec 23, 2023: Taylorcraft BC12-D (N43415), Whitefish, MT, substantial damage. Probable cause: The failure of the airport authorities to renew the airport closure NOTAM for the airport. Contributing to the accident, was the pilot’s inability to see the runway closure sign. - [NTSB ERA21LA390](https://openairdocs.org/ntsb/ERA21LA390), Sep 29, 2021: Eurocopter AS 350 B3 (N370NC), Kinston, NC, substantial damage. Probable cause: The buckling of the tail boom as a result of a hard landing event of undetermined time and location. - [NTSB CEN21LA206](https://openairdocs.org/ntsb/CEN21LA206), Apr 19, 2021: Cessna 170B (N2955D), Curtis, NE, substantial damage. Probable cause: Water contamination of the airplane’s fuel supply which resulted in a total loss of engine power. - [NTSB CEN15LA423](https://openairdocs.org/ntsb/CEN15LA423), Sep 24, 2015: Bell 206B (N648CA), Woodville, TX, substantial damage. Probable cause: The loss of engine power due to water contamination in the fuel system. Contributing to the accident were the pilot’s inadequate preflight inspection of the fuel tanks and the operator’s inadequate… - [NTSB ERA15FA313](https://openairdocs.org/ntsb/ERA15FA313), Aug 16, 2015: Beech C35 (N5946C), Hicksville, NY, destroyed, 1 fatal. Probable cause: The pilot's improper decision to delay turning toward a suitable runway once he realized that an engine failure had occurred, which resulted in his having inadequate altitude to glide to a suitable… - [NTSB DCA08MA098](https://openairdocs.org/ntsb/DCA08MA098), Sep 20, 2008: Learjet LR60 (N999LJ), Columbia, SC, destroyed, 4 fatal. Probable cause: The operator’s inadequate maintenance of the airplane’s tires, which resulted in multiple tire failures during takeoff roll due to severe underinflation, and the captain’s execution of a rejected… 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.