# NTSB FTW93LA084: Piper PA-23-250, N6290Y, Ruston, LA, February 11, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 11, 1993, 16:50 local (22:50 UTC)
- Place: Ruston, LA
- Location: 32.5132° N, 92.5884° W: Placed by OpenAirDocs at RUSTON RGNL (RSN), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.5132&lon=-92.5884&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18637
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW93LA084
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18637/pdf
- Page: https://openairdocs.org/ntsb/FTW93LA084

## Probable cause

FAILURE AT A HYDRAULIC FITTING, WHICH RESULTED IN A HYDRAULIC LEAK, LOSS OF HYDRAULIC FLUID, AND SUBSEQUENT LOSS OF BRAKING ACTION DURING THE LANDING ROLL.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Overrun, landing - roll
  - airport facilities,runway/landing area condition - displaced threshold
  - hydraulic system,fitting - failure,total (cause)
  - fluid,hydraulic - leak (cause)
  - landing gear,normal brake system - inoperative (cause)
- On ground/water collision with object, landing - roll
  - object - tree(s)

## Analysis

WHILE LANDING ON A RUNWAY WITH A DISPLACE THRESHOLD, BRAKING ACTION WAS LOST AND THE PILOT WAS UNABLE TO STOP THE AIRPLANE ON THE REMAINING RUNWAY.  SUBSEQUENTLY, THE AIRPLANE RAN OFF THE END OF THE RUNWAY AND COLLIDED WITH THREE SMALL TREES, WHICH DAMAGED THE RIGHT WING.  AN INSPECTION REVEALED A LEAK IN A BRAKE LINE FITTING HAD ALLOWED THE HYDRAULIC SYSTEM TO BE DEPLETED OF FLUID.

## Aircraft

- Registration: N6290Y (not matched to a registry record)
- Reported make and model: PIPER PA-23-250
- Category: Airplane
- Serial number: 27-3450
- Airframe hours: 3700
- Engines: LYCOMING IO-540-C4B5 250 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Mountain Aviation
- Registered owner: Mountain Aviation
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 14, 1992, 89 hours before
- Departed: BTR, BATON ROUGE, LA
- Destination: RSN
- Flight plan: IFR
- Airport: RSN, Ruston Municipal, runway 16, 2,798 × 90 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 23; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 698 total, 42 in this make and model, 570 as pilot in command, 86 in the last 90 days, 57 in the last 30 days, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 9 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 66 °F, dew point 54 °F
- Altimeter: 29.00 inHg
- Observed at: MLU, 30 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19930211002259A](https://openairdocs.org/incident/19930211002259A), Feb 11, 1993: Piper PA23250, Ruston, LA, Substantial damage. Unable to stop on runway due long landing and weak brakes. Found low brake fluid from leaking brake line fitting.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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