Low oil pressure

airnoonanairnoonan
in General Discussion

Fighting an intermittent oil pressure problem on my 1978 turbo arrow 3. Oil pressure spikes normally on start up and within 5 minutes slowly moves into the yellow range. Most recently it happened in flight. I normally sit at 50 PSI in cruise. Yesterday it was at 35 PSI. After landing at idle power I could barely keep it above redline. Seemed like a classic oil pressure relief valve issue. But I had that changed and 3 flights later it has happened again. Have also checked filter and screens.

it is not a sensor or sending unit as we hooked a analog gauge up and it matched.

all other indications normal.


any suggestions/thoughts ? Thanks

Comments

  • planewrenchplanewrench

    See reply in maintenance section

    48 yrs A/P IA DAL aircraft inspector. 172N

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