NTSB investigations
21 cases where NTSB found Master cylinder/brake valve.
Cases per year
| 2009 | 1 |
|---|---|
| 2011 | 2 |
| 2013 | 3 |
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 4 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 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\", '01023243')) 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", '01023243')) 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 CEN25LA264Accident · No injuriesClass 4 · LimitedFinal reportAlon A2 · Pipestone, MNThe failure of the left brake to release due to corrosion and pitting of the caliper piston and bore, which resulted in a runway excursion.NTSB WPR24LA045Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 170B · Cameron Park, CAA failure of the right brake master cylinder piston due to a faulty return spring, which resulted in a seized right main landing gear brake and a runway excursionNTSB WPR22LA324Accident · No injuriesClass 3 · LimitedFinal reportChampion 7GCBA · Athol, IDThe failure of the right brake due to a disconnected master cylinder piston rod, which led to the departure of the airplane from the runway surface. Contributing to the accident was the mechanic’s failure to adequately inspect the connection between the…NTSB ERA22LA132Accident · No injuriesClass 4 · LimitedFinal reportCessna 140 · New Bern, NCThe loss of brake pressure on the left brake due to a failed O-ring seal.NTSB ERA21LA044Accident · No injuriesClass 4 · LimitedFinal reportCessna 305 · Ellenville, NYThe failure of the right brake master cylinder lock seal spring washer.NTSB GAA18CA022Accident · No injuriesData collectionFinal reportAviat A1 · Williamsport, PAThe pilot’s failure to verify that the parking brake was disengaged before landing, which resulted in a runway excursion.NTSB WPR18LA009Accident · No injuriesLimited investigationFinal reportBarber Warren D Turbine Cubs P A 18 · Skull Valley, UTThe activation of the wheel brakes during landing, which resulted in a nose-over. The reason for the wheel brake activation could not be determined.NTSB ERA17LA290Accident · No injuriesLimited investigationFinal reportCessna 180 · Newport, NHA leak in the right brake slave cylinder, which led to no fluid in the reservoir and subsequent asymmetric braking.NTSB GAA17CA212Accident · No injuriesData collectionFinal reportThomas Craig E Wittman W-10 · Stevensville, MTThe pilot’s decision to take off with a known master brake cylinder leak and his subsequent failure to maintain directional control during landing.NTSB ANC17LA005Accident · No injuriesLimited investigationFinal reportCessna A185 · Ninilchik, AKA loss of brake system fluid due to leaks in the o-rings, which resulted in asymmetrical braking and a subsequent loss of directional control during the landing roll.NTSB CEN16LA274Accident · No injuriesLimited investigationFinal reportChance Vought F4U 5 · East Troy, WIA failure of the O-ring in the left brake master cylinder for reasons that could not be determined, which resulted in a loss of directional control during landing.NTSB GAA16CA368Accident · No injuriesData collectionFinal reportAvions Mudry ET Cie CAP · Spring Branch, TXThe flight instructor's inability to maintain directional control during the landing roll as a result of the malfunctioning brake master cylinder.NTSB ERA16LA213Accident · No injuriesLimited investigationFinal reportCessna 310 · Apopka, FLThe intermittent failure of the left brake master cylinder, which resulted in asymmetric braking and the subsequent loss of directional control during the landing roll.NTSB WPR15LA253Accident · No injuriesLimited investigationFinal reportBeech C90 · Las Vegas, NVThe jet flight crew's use of an inappropriate checklist to resolve a parking brake hydraulic system pressure anomaly, which resulted in the airplane rolling down a slight incline and colliding with a parked twin-engine turboprop airplane. Contributing to the…NTSB GAA15CA129Accident · No injuriesData collectionFinal reportLancair ES - NO Series · Hampshire, ILThe failure of the brake master cylinder which resulted in a loss of brake pressure and the subsequent loss of directional control during the landing roll.NTSB WPR14LA040Accident · Serious injuriesLimited investigationFinal reportMikoyan Gurevich MIG 21 UM · Reno, NVThe loss of brake control due to the fracture of the front brake pawl engagement spring, which resulted in a runway overrun.NTSB ERA13LA409Accident · No injuriesLimited investigationFinal reportPiper PA-31P · Doylestown, PAA leaking parking brake valve, which allowed air to enter the left brake line and resulted in the eventual failure of the left wheel brake during the landing roll.NTSB ANC13CA075Accident · No injuriesData collectionFinal reportCessna 185D · North Pole, AKThe malfunction of the right main wheel brake during taxi due to a faulty O-ring in the right brake pedal master cylinder.NTSB WPR11LA205Accident · Minor injuriesLimited investigationFinal reportBennett Midjet Mustang I · Ramona, CAThe pilot's inability to maintain directional control during the landing roll due to the overload separation of the left brake master cylinder from the left rudder pedal assembly.NTSB WPR11FA158Accident · No injuriesField investigationFinal reportCessna 208B · Bakersfield, CAThe malfunction of a master brake cylinder, which resulted in a loss of braking action and subsequent loss of directional control and collision with three vehicles during taxi. Contributing to the accident was the inappropriate design and manufacture of the…NTSB WPR09CA478Accident · No injuriesData collectionFinal reportCessna T210J · Albany, ORThe malfunction of the left main wheel brake during landing due to inadequate hydraulic fluid in the left brake pedal master cylinder due to leakage.