# NTSB MIA84LA246: Rockwell 100-180, N3639X, Orlando, FL, September 3, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 3, 1984, 13:32 local (17:32 UTC)
- Place: Orlando, FL
- Coordinates: 28.580402, -81.439773 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=28.5804&lon=-81.4398&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31188
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84LA246
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31188/pdf
- Page: https://openairdocs.org/ntsb/MIA84LA246

## 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
  - directional control - not maintained, pilot in command (cause)
  - landing gear,normal brake system - undetermined (contributing factor)
  - ground loop/swerve
- On ground/water encounter with terrain/water, landing - roll
  - airport facilities,runway/landing area condition - ditch (contributing factor)
- Nose down, landing - roll

## Analysis

STUDENT PLT STATED THAT DURING LANDING ROLL, LEFT BRAKE FAILED AND ACFT SWERVED INTO A DITCH. BRAKES HAD FUNCTIONED SATISFACTORALLY DURING PRE-TAKEOFF TAXI AND RUN UP. INVESTIGATION SHOWED BRAKE RESERVOIR 1/2 FULL AND LEFT BRAKE INOPERATIVE FOR UNDETERMINED REASON.

## Aircraft

- Registration: N3639X (not matched to a registry record)
- Reported make and model: Rockwell 100-180
- Category: Airplane
- Serial number: 5099
- Airframe hours: 1443
- Engines: LYCOMING O-360-A2F 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Letitia M. Penrod
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 1, 1983, 63 hours before
- Airport: X30, Orlando West, runway 36, 2,430 × 50 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; student; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 42 total, 9 in this make and model, 8 as pilot in command, 8 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 100° at 7 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Altimeter: 30.00 inHg
- Observed at: ORL, 13 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 19840903045319A](https://openairdocs.org/incident/19840903045319A), Sep 3, 1984: Slinds 100180, Orlando, FL, Substantial damage. Left brake failed. Lost directional control went into ditch. Brake reservoir only partially full.

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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