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minimum engine/APU oil QTY?

Featured Replies

Hi all

At what QTY level is it appropriate to start refilling engine and APU engine oil before a flight? 

Yours truly
Boaz Fraizer
Copenhagen, Denmark

Boeing777_Banner_Pilot.jpg

Hi,

A little search would have done no harm :happy:

 

Romain Roux

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Avec l'avion, nous avons inventé la ligne droite.

St Exupéry, Terre des hommes.

Oil is cheap compared to an engine shut down.  If I am at a home base I'll top off the fluids regardless of level, if I'm away where maintenance calls are more expensive then I'll keep them above 80% unless it's a long haul then I want them above 90%.  Pilot preference.  Minimum values will turn yellow but I consider those a potential problem if they ever appear.

Dan Downs KCRP

At home base we always topped up the engine oils. However, since access to the APU is a little tricky on the 744, we were told to top up the oil depending on the levels. APU oil level varies if the APU is running or not running. Unfortunately, I have long since forgotten the values.  :blush:  0.60 running, 0.80 not running? I'd be suprised if the PMDG manual didn't specify this.

It's interesting to note that certain APU oil types give different level readings. The oil level sensor is a "capacitance" type, so oil density may give different readings. I don't know what brand of oil is specified for PMDG APUs.

John H Watson (retired 744/767 Avionics engineer)

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