# Accident 20060603009439A: Aviat PITTSS2B, Antioch, CA, June 3, 2006

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 3, 2006, 14:30 local time
- Place: Antioch, CA
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 37.9333° N, 121.7833° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=37.9333&lon=-121.7833&mi=10
- Aircraft: N117PS, a cancelled registration (https://openairdocs.org/deregistered/N117PS-2008-11-14) (OpenAirDocs)
- Registry model: Aviat PITTS S-2B (registry code 2210403, https://openairdocs.org/model/aviat-pitts-s-2b) (OpenAirDocs)
- Registry engine: Lycoming AEIO-540 series (registry code 41568, https://openairdocs.org/engine/lycoming-aeio-540-series) (OpenAirDocs)
- Reported make and model: AVIAT PITTSS2B
- Reported engine: LYC AEIO540D4A5
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 2,290 total, 300 in this make and model, 150 in the last 90 days
- NTSB investigation: [NTSB LAX06LA190](https://openairdocs.org/ntsb/LAX06LA190) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20060603009439A

## Narrative

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

(-23) AIRCRAFT MADE A SOFT FIELD LANDING IN A HAYFIELD IN ANTIOCH, CA DUE TO LOSS OF OIL PRESSURE AT 031430PDT. AIRCRAFT FLIPPED OVER AND CAME TO REST INVERTED. SINGLE OCCUPANT THE PILOT, ^PRIVACY DATA OMIT^ WAS NOT INJURED. HOWEVER SUBSTANTIAL AIRCRAFT DAMAGE REPORTED TO NTSB. MET WITH THE PILOT ^PRIVACY DATA OMIT^ AND REVIEWED AIRCRAFT RECORDS AT ATTITUDE AVIATION LIVERMORE, CA ON 06/06/2006. LAST ANNUAL INSPECTION ACCOMPLISHED ON 03/29/2006. ENGINE RECORD INDICATED LYCOMING AEIO-540-D4A5 WAS OVERHAULED BY AIR WEST ENGINE REPAIR STATION #TV3R ON 01/12/2001. ON 06/06/2006 TACH READ 2256.3 PLACARDS BESIDE TACH READS "NEXT OIL CHANGE DUE 2256.7". CHECKED OIL LEVEL, ABOUT (9) QUARTS OF OIL STILL IN ENGINE AND NO SIGNS OF LEAKAGE OBSERVED. HAD OWNER/PILOT ^PRIVACY DA^ REMOVE THE OIL SCREEN IN ACCORDANCE WITH SB-480E. NO MATERIAL FOUND IN SCREEN. REMOVED RIGHT MAGNETO TO INSPECT IN ACCORDANCE WITH LYCOMING SB-555A, PLUG NOT APPLICABLE OR INSTALLED. REMOVED THE ADJUSTABLE OIL PRESSURE VALVE, NO MATERIAL FOUND. SEAT AREA WAS CLEANED AND INSPECTED NO DAMAGE NOTED OR UNUSUAL WEAR PATTERNS. REMOVED ALL BOTTOM SPARK PLUGS CYLINDER #1 AND #3 HAD OIL IN THE CYLINDERS. ROTATED BROKEN PROPELLER NO MECHANICAL DAMAGE NOTED. UNABLE TO DETERMINE OIL PUMP IMPETTERS IN ACCORDANCE WITH SB-524 UNTIL ENGINE IS TORN DOWN. UNABLE TO DETERMINE OIL SUCTION SCREEN AREA FOR CASTING VOITS UNTIL ENGINE IS OPEN UP IN ACCORDANCE SB-558.

## The NTSB's investigation of this event (1)

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.

- [NTSB LAX06LA190](https://openairdocs.org/ntsb/LAX06LA190), Jun 3, 2006: Aviat Pitts S-2B (N117PS), Antioch, CA, substantial damage. Probable cause: The loss of oil pressure due to metal pieces from the number 5 piston skirt in the oil system, which prevented the oil valve top ball valve from seating. The muddy terrain was a factor.

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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