# Incident 19980618027379I: Gulstm AA5B, Winnsboro, TX, June 18, 1998

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 18, 1998, 12:04 local time
- Place: Winnsboro, TX
- Airport: Winnsboro Municipal Airport
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 32.9388° N, 95.2789° W: Placed by OpenAirDocs at WINNSBORO MUNI (F51), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.9388&lon=-95.2789&mi=10
- Aircraft: N4542L, registered now (https://openairdocs.org/aircraft/N4542L) (OpenAirDocs)
- Registry model: Grumman American Avn. AA-5B (registry code 3960105, https://openairdocs.org/model/grumman-american-avn-aa-5b) (OpenAirDocs)
- Registry engine: Lycoming O&VO-360 series (registry code 41514, https://openairdocs.org/engine/lycoming-o-vo-360-series) (OpenAirDocs)
- Reported make and model: GULSTM AA5B
- Reported engine: LYC O360*
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 440 total, 300 in this make and model, 10 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19980618027379I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

THE AIRCRAFT WAS ENROUTE FROM MAF TO TXK. THE ENGINE BEGAN TO RUN ROUGH, THE PILOT NOTICED HE HAD LOST OIL PRESSURE. HE CONTRACTED ATC, THEY DEIRECTED HIM TO THE NEAREST AIRPORT. THE ENGINE WAS BECOMING VERY ROUGH. WHEN HE SAW HE HAD THE AIRPORT MADE, HE SHUT THE ENGINE DOWN TO PREVENT A CATASTROPHIC FAILURE. THE AIRCRAFT LANED WITHOUT FURTHER INCIDENT. THE PILOT STATED THERE WAS NO EVIDENCE OF LEAKAGE BUT THERE WAS NO OIL IN THE ENGINE. INVESTIGATION REVELAED THE CRANKCASE BREATHER INNER WALL HAD COLLAPSED WHICH CAUSED THE CRANKCASE TO PRESSURIZE AND FORCED THE OIL PAST THE PISTON RINGS. THIS TYPE OF FAILURE IS ADDRESSED BY FLETCHAIR INC. S/B 187 WHICH HAD NOT BEEN COMPLIED WITH ON THIS AIRCRAFT.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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