BFO90LA080 · Cessna 172
Cessna 172 · Accident: loss of control on ground/water during landing
From Bowman Field (LOU) to an unrecorded destination
Event
- NTSB case
- BFO90LA080
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Cessna 172
- Aircraft type
- Cessna 172
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N96839
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Bowman Field (LOU), Louisville, KYTo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing · landing roll
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of control on ground/water
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Hydraulic system, line › Failure, total
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE PILOT REPORTED THAT DURING THE PRELFIGHT, THE LEFT BRAKE WAS 'WEAK.' THE FLUID LEVEL IN THE LEFT BRAKE HYDRAULIC FLUID RESERVOIR WAS LOW AND IT WAS REFILLED. THE BRAKE OPERATED SATISFACTORILY. THE PILOT FLEW THE AIRCRAFT TO KY07 TO FURTHER INSPECT THE BRAKE. DURING THE LANDING, THE PILOT EXPERIENCED A LOSS OF PRESSURE IN THE LEFT BRAKE. THE PILOT GROUND LOOPED THE AIRCRAFT BY APPLYING RIGHT BRAKE. THE AIRCRAFT WENT OFF THE SIDE OF THE RUNWAY, STRUCK A FENCE AND WENT INTO A DITCH. EXAMINATION OF THE AIRCRAFT REVEALED THE LEFT BRAKE LINE WAS WORN THROUGH FROM CHAFING AGAINST A SCREW WHICH SECURES THE STRUT FAIRING.
Probable cause
THE FAILURE OF A HYDRAULIC BRAKE LINE WHICH RESULTED IN A LOSS OF FLUID, AND AN INOPERATIVE BRAKE SYSTEM DURING LANDING ROLL.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record BFO90LA080
- Event ID
- 20001212X24205
- Case number
- BFO90LA080
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: ddeb771729b502b8e2664aa17e955a09fb3f6409cc8e896e446984ac3856f78e; retrieved 2026-09-23T05:16:47.209Z.