# NTSB MIA93LA066: Cessna 172K, N79563, Plymouth, FL, February 9, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 9, 1993, 15:15 local (20:15 UTC)
- Place: Plymouth, FL
- Location: 28.7066° N, 81.5814° W: Placed by OpenAirDocs at ORLANDO APOPKA (X04), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=28.7066&lon=-81.5814&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report February 18, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 33226
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA93LA066
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33226/pdf
- Page: https://openairdocs.org/ntsb/MIA93LA066

## Probable cause

UNDETECTED DAMAGE TO THE RIGHT MAIN GEAR BRAKE LINE WHICH DEVELOPED A LEAK AND RESULTED IN FAILURE OF THE BRAKE. THE PILOT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL, OR STOP THE AIRCRAFT, PRIOR TO COLLIDING WITH AIRCRAFT PARKED TO THE  SIDE OF THE RUNWAY.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - landing gear,normal brake system - previous damage (cause)
  - landing gear,normal brake system - failure,partial (cause)
  - directional control - not possible, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - aircraft parked/standing

## Analysis

THE RIGHT BRAKE FAILED DURING THE LANDING ROLLOUT, AND THE PILOT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL OR STOP THE AIRCRAFT PRIOR TO COLLIDING WITH PARKED AIRCRAFT OFF THE LEFT SIDE OF THE RUNWAY. THE FAIRINGS COVERING THE MAIN GEAR STRUTS HAD BEEN REMOVED, EXPOSING THE BRAKE LINES. THE RIGHT BRAKE LINE HAD SUSTAINED DAMAGE IN THE EXPOSED AREA AND DEVELOPED A LEAK, CAUSING LOSS OF FLUID TO THE RIGHT BRAKE.

## Aircraft

- Registration: N79563 (not matched to a registry record)
- Reported make and model: CESSNA 172K
- Category: Airplane
- Serial number: 17258177
- Airframe hours: 1699
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Anderson Software Inc.
- Registered owner: Anderson Software Inc.
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Last inspection: Annual, June 10, 1992
- Departed: X04
- Airport: X04, Orlando Country, runway 15, 3,000 × 30 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 358 total, 174 in this make and model, 278 as pilot in command, 12 in the last 90 days, 12 in the last 30 days, 9 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 50° at 9 knots
- Visibility: 10 statute miles
- Lowest ceiling: 8,500 ft broken
- Temperature: 68 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: MCO, 25 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 19930209002149A](https://openairdocs.org/incident/19930209002149A), Feb 9, 1993: Cessna 172K, Plymouth, FL, Substantial damage. Lost directional control landing when right brake failed. Struck two parked aircraft. Right brakeline ruptured.

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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