# Central warning - Type: NTSB finding subsection - Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Indicating/recording systems](https://openairdocs.org/ntsb-findings/010231) › Central warning - NTSB code: 01023150 - Cases: 9 - In the probable cause: 8 - Fatal cases: 2 - All cases: https://openairdocs.org/ntsb-findings/01023150/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023150/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/01023150 ## Cases per year (in the probable cause / all) - 2009: 0 / 1 - 2010: 1 / 1 - 2017: 1 / 1 - 2018: 1 / 1 - 2019: 3 / 3 - 2023: 2 / 2 ## Defining events in these cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 2 cases - [Birdstrike](https://openairdocs.org/ntsb-events/901): 1 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 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 - [Landing gear not configured](https://openairdocs.org/ntsb-events/095): 1 cases - [Abnormal runway contact](https://openairdocs.org/ntsb-events/090): 1 cases ## Aircraft models (registry) - [Sikorsky S-76C](https://openairdocs.org/model/sikorsky-s-76c): 1 cases - [Robinson Helicopter R44](https://openairdocs.org/model/robinson-helicopter-r44): 1 cases - [Piper PA-46-310P](https://openairdocs.org/model/piper-pa-46-310p): 1 cases - [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n): 1 cases - [Dehavilland DHC-2 MK 1](https://openairdocs.org/model/dehavilland-dhc-2-mk-1): 1 cases - [Dehavilland DHC-3](https://openairdocs.org/model/dehavilland-dhc-3): 1 cases - [Cessna 560XL](https://openairdocs.org/model/cessna-560xl): 1 cases - [Grob G120TP-A](https://openairdocs.org/model/grob-g120tp-a): 1 cases - [British Aerospace BAE 125 SERIES 800A](https://openairdocs.org/model/british-aerospace-bae-125-series-800a): 1 cases - [Boeing CH-46E](https://openairdocs.org/model/boeing-ch-46e): 1 cases ## Other findings in the same cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 4 cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 2 cases - [Delayed action](https://openairdocs.org/ntsb-findings/02041025) (Personnel issues): 2 cases - [Safety programs, general](https://openairdocs.org/ntsb-findings/04035000) (Organizational issues): 1 cases - [Regulatory requirements](https://openairdocs.org/ntsb-findings/04034020) (Organizational issues): 1 cases - [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 1 cases - [Equip certification/testing](https://openairdocs.org/ntsb-findings/04012015) (Organizational issues): 1 cases - [Design of document/info](https://openairdocs.org/ntsb-findings/04011020) (Organizational issues): 1 cases - [Equipment design](https://openairdocs.org/ntsb-findings/04011010) (Organizational issues): 1 cases - [Equipment/operational](https://openairdocs.org/ntsb-findings/03042030) (Environmental issues): 1 cases ## Newest cases - [NTSB WPR23LA306](https://openairdocs.org/ntsb/WPR23LA306), Aug 5, 2023: Boeing CH-46E (N461WY), Springerville, AZ, destroyed. Probable cause: The flight crew’s misidentification of a No. 2 torque sensing system signal conditioner malfunction when both engines were performing normally, which resulted in their attempt to execute a… - [NTSB CEN23LA130](https://openairdocs.org/ntsb/CEN23LA130), Mar 11, 2023: Robinson Helicopter R44 (N4164T), De Kalb, TX, substantial damage. Probable cause: The pilot’s inability to maintain control of the helicopter due to his failure to maintain rotor speed. Contributing to the accident was the failure of the helicopter’s low rotor speed warning system. - [NTSB CEN20LA028](https://openairdocs.org/ntsb/CEN20LA028), Dec 3, 2019: BAE BAE125 (N469RJ), Detroit, MI, substantial damage. Probable cause: The pilots’ failure to increase approach speed as recommended for flight in icing conditions, which resulted in an aerodynamic stall and subsequent impact with terrain. Contributing to the accident… - [NTSB WPR19FA230](https://openairdocs.org/ntsb/WPR19FA230), Aug 21, 2019: Cessna 560XL (N91GY), Oroville, CA, destroyed. Probable cause: The pilot’s failure to release the parking brake before attempting to initiate the takeoff, which produced an unexpected retarding force and airplane nose down pitching moment. Also causal was the… - [NTSB CEN19MA141](https://openairdocs.org/ntsb/CEN19MA141), May 13, 2019: De Havilland DHC-2 (N952DB), Ketchikan, AK, destroyed, 6 fatal. Probable cause: The inherent limitations of the see-and-avoid concept, which prevented the two pilots from seeing the other airplane before the collision, and the absence of visual and aural alerts from both… - [NTSB DCA18CA283](https://openairdocs.org/ntsb/DCA18CA283), Aug 13, 2018: Airbus A321-271N (N204HA), Los Angeles, CA, substantial damage. Probable cause: a tailstrike caused by inappropriate recovery technique after a bounced landing. Contributing to the accident was the failure of the radio altimeter, caused by the approach being over calm/flat… - [NTSB ERA17LA125](https://openairdocs.org/ntsb/ERA17LA125), Mar 8, 2017: Grob G120TP-A (N196TP), Abbeville, AL, substantial damage. Probable cause: The flame-out of the engine due to a mis-set fuel control unit at the time of manufacture. Contributing to the accident was the pilots’ delayed recognition that the engine had flamed out, partially… - [NTSB CEN10CA533](https://openairdocs.org/ntsb/CEN10CA533), Sep 12, 2010: Piper PA46-310P (N24WW), Farmington, NM, substantial damage. Probable cause: The pilot’s premature retraction of the landing gear and the flaps during landing. Contributing to the accident was the inadvertent dimming of the cockpit lighting, resulting in a perceived unsafe… - [NTSB CEN09MA117](https://openairdocs.org/ntsb/CEN09MA117), Jan 4, 2009: Sikorsky S-76C (N748P), Morgan City, LA, destroyed, 8 fatal. Probable cause: (1) the sudden loss of power to both engines that resulted from impact with a bird (red-tailed hawk), which fractured the windshield and interfered with engine fuel controls, and (2) the subsequent… 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.