# SDR CA110613005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2011
- Submitted: September 9, 2011
- Operation: General aviation
- Make and model: Robsin R44RAVENII
- Aircraft time: 2,816 hours
- Engine: Lyc IO540AE1A5
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Line
- Part number: D7531
- Condition: Cracked
- Location: Engine Oil Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA110613005

## Discrepancy

PILOT NOTED LOW OIL PRESSURE AND INCREASED OIL TEMP IN FLIGHT.  PILOT LANDED AND ACFT WAS INSPECTED.  ENGINEER FOUND A LARGE OIL LEAK IN THE AREA OF THE OIL COOLER.  INSPECTION FOUND AN OIL LINE SHEARED AT A SWAGE LOK FITTING THAT WAS INSTALLED AS PART OF STC SH06-43 CONFIGURATION 2. FURTHER INVESTIGATION DETERMINED THAT SWAGE LOCK FITTING REQUIRES A MINIMUM LINE THICKNESS OF 0.035". LINES HAVE A WALL THICKNESS OF 0.018" - 0.020". COMPANY REMOVED STC SH06-43 MODIFICATION FROM ALL 16 COMPANY ACFT UNTIL SUCH TIME AS A SUITABLE AMENDMENT CAN BE MADE TO THIS APPROVAL.

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