Pilot’s Operating Handbook Section 7
EXTRA 500 Description of Airplane and Systems
be visually checked through a hole in the right hand removable
lower part of the cowling.
The filter features an internal by-pass with a valve cracking
pressure of 15 ± 1.5 psi.
The by-pass pressure drop is 20 psi. maximum at rated flow and
38 °C (100 °F). On rise to a differential pressure of 11.6 +/- 1.8
psi, the red by-pass indicator pin is inoperative at oil
temperatures below 38 ° ± 4 °C (100 +/-15 °F).
The indicator pin can be put back manually on the ground by
depressing while rotating it 360°.
5 Engine Oil Pump
A gas generator driven gear type pressure and scavenge pump
assembly is mounted inside the power and accessory gearbox.
Note The engine may be operated within the oil temperature
range of –54 °C to +82 °C (-65 °F to +180 °F) using specified
oils as listed in Section 2, Limitations of this POH.
Oil pressure is indicated at the oil pressure indicator and if
pressure drops below 35 psi by illumination of a red OIL
PRESS warning light on the annunciator panel.
26. January 2011 7-33
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