NTSB investigations
22 cases where NTSB found Hydraulic power system, general.
Cases per year
| 2008 | 4 |
|---|---|
| 2009 | 4 |
| 2010 | 1 |
| 2011 | 3 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 3 |
| 2016 | 1 |
| 2018 | 1 |
| 2021 | 2 |
| 2022 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1 WHERE c.\"mKey\" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f.\"findingCode\", '01022900')) ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01022900')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ERA22LA148Accident · No injuriesClass 3 · LimitedFinal reportCessna 525 · Middle River, MDAnd undetermined failure of the brake system. Contributing to the accident was the failure of the pilots to locate and operate the emergency brake control, which resulted in a runway excursion and collision with terrain and an object.NTSB WPR21LA323Accident · No injuriesClass 3 · LimitedFinal reportCessna 177RG · Albuquerque, NMThe failure of the nose gear hydraulic flex line, which resulted in a loss of hydraulic fluid which prevented the main landing gear from fully extending and locking into place during landing.NTSB CEN21LA216Accident · No injuriesClass 3 · LimitedFinal reportAerospatiale AS350 B2 Ecureuil · Yukon, OKThe pilot receiving instruction’s untimely and unidentified inadvertent activation of the hydraulic cut-off switch, which turned off the hydraulic system while the helicopter was at slow airspeed followed by a rapid power increase, which resulted in a loss of…NTSB CEN18LA349Accident · Serious injuriesLimited investigationFinal reportNorth American T-28B · Minneapolis, MNThe fire during approach for reasons that could not be determined based on the available evidence, which resulted in impact with terrain during approach for a precautionary landing.NTSB ANC17LA014Accident · Serious injuriesLimited investigationFinal reportPiper PA 32R-300 · McGrath, AKThe failure of the nose landing gear to extend and lock due to the failure of the alternator and reduced battery power due to the cold ambient temperature, which prohibited the electrically-driven hydraulic pump from supplying adequate hydraulic pressure to…NTSB WPR16FA040Accident · 2 fatalField investigationFinal reportAirbus Helicopters AS350 · Superior, AZThe pilot's loss of helicopter control in mountainous terrain as the result of operating the helicopter outside the performance envelope of its hydraulic system and encountering the servo transparency phenomenon. Contributing to the accident was the pilot's…NTSB WPR15LA234Accident · No injuriesLimited investigationFinal reportCessna 180J · Dixie, IDThe failure of the right brake hydraulic line during taxi due to fatigue, which caused a loss of hydraulic fluid and rendered the brake inoperative.NTSB CEN15MA290Accident · 1 fatalClass 1 · MajorFinal reportAirbus Helicopters AS350B3E · Frisco, COAirbus Helicopters' dual-hydraulic AS350 B3e helicopter's (1) preflight hydraulic check, which depleted hydraulic pressure in the tail rotor hydraulic circuit, and (2) lack of salient alerting to the pilot that hydraulic pressure was not restored before…NTSB CEN14IA329Incident · No injuriesIncident investigationFinal reportEurocopter AS 350 B3 · Temple, TXThe pilot’s failure to reposition the yaw servo hydraulic switch to the “on” position during the pretakeoff hydraulic system check, which resulted in a complete lack of hydraulic boost to the tail rotor system and increased the load required to move the…NTSB DCA13MA081Accident · 7 fatalClass 1 · MajorFinal reportBoeing 747-400 BCF · Bagram, AfghanistanNational Airlines' inadequate procedures for restraining special cargo loads, which resulted in the loadmaster's improper restraint of the cargo, which moved aft and damaged hydraulic systems Nos. 1 and 2 and horizontal stabilizer drive mechanism components,…NTSB WPR11GA144Accident · Minor injuriesFinal reportEurocopter AS 350 B2 · Riverside, CAThe failure of both pilots to follow proper procedures during a simulated hydraulic emergency that resulted in a loss of helicopter control. Contributing to the accident was the flight instructor’s delayed remedial action.NTSB CEN11FA193Accident · No injuriesField investigationFinal reportGulfstream Aerospace GV-SP · Appleton, WIThe pilot flying's (PF) decision to land on a shorter-than-recommended runway with a known left hydraulic system failure rather than go around as suggested by the pilot-not-flying, his failure to immediately apply emergency brakes following the detection of…NTSB ERA11FA133Accident · 2 fatalField investigationFinal reportPotez-Air Fouga CM 170 Magister · Kissimmee, FLThe pilot/mechanic's improper decision to continue a tight-turning landing pattern after a loss of hydraulic pressure, and his subsequent failure to maintain adequate airspeed during that pattern, which resulted in an accelerated maneuver stall. Contributing…NTSB CEN10LA572Accident · Serious injuriesLimited investigationFinal reportCessna 172RG · Tulsa, OKA shorted terminal lug on the landing gear hydraulic pump which resulted in a cabin fire. Contributing to the accident was the lack of clear installation procedures for the hydraulic pump.NTSB ERA09TA440Accident · Minor injuriesFinal reportEurocopter AS 350B3 · Jacksonville, FLThe flight instructor's improper decision to attempt hover flight without hydraulic power and his subsequent loss of control.NTSB WPR09LA361Accident · No injuriesLimited investigationFinal reportPiper PA-46-350P · Redmond, ORAn undetermined hydraulic system malfunction in the engine compartment during descent from cruise flight which resulted in an in-flight fire.NTSB WPR09LA341Accident · No injuriesLimited investigationFinal reportPiper PA-46-310P · Westley, CAThe failure of the landing gear hydraulic line socket, which resulted in a hydraulic leak and in-flight fire. Contributing to the accident was the failure of the owner and/or maintenance facility to comply with the maintenance manual hose replacement schedule.NTSB WPR09LA100Accident · No injuriesLimited investigationFinal reportCessna 210A · Henderson, NVAn undetermined failure of the hydraulic power pack to fully extend the main landing gear through both the normal and emergency systems.NTSB MIA08LA149Accident · No injuriesLimited investigationFinal reportAero Commander 500-B · Charlotte AmaliThe failure of maintenance personnel to identify inadequate clamping of the aluminum line during inspection, and the undetected fatigue cracking of the line which resulted in the loss of hydraulic fluid.NTSB ENG08IA022Incident · No injuriesIncident investigationFinal reportBoeing 747 · Newark, NJAn engine fire in the No. 3 engine due to the failure of, and subsequent flammable fluid leak from, one of three fuel or hydraulic lines located in the engine's accessory raceway that ignited when the fluid came in contact with the hot engine cases.…NTSB NYC08LA091Accident · Minor injuriesLimited investigationFinal reportNorth American Rockwell NA-265-80 · Ft. Lauderdale, FLThe depletion of pressure in the normal hydraulic system for an undetermined reason, and the pilots' failure to properly operate the emergency braking system. Contributing to the accident was an inoperative hydraulic system aural warning.NTSB CHI08IA065Incident · No injuriesIncident investigationFinal reportBoeing 737-2H4 · Lincoln, NEThe improper installation of the swivel valve fittings by the operator's mechanic leading to the total loss of both hydraulic systems. Contributing to the incident were the swivel valves leaking and the total failure of the hydraulic system.