Outside air, pressure, temperature sensor on 912iS

by Lance Goddard in 912iS Technical Questions 10 years ago

Trying to figure how and where to mount the outside air, pressure, temperature sensor (AAPTS) on the 912 iS. It has a mounting tab and an O-ring as part of it but I don't know the best place or method to mount it. Any ideas from other 912iS owners?

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Re: Outside air, pressure, temperature sensor on 912iS

by Rob Seaton » 10 years ago

Rob Seaton

3 1.32k 251

it should be in the same general area as the air filter so it senses the same pressure and temperature zone. We put ours in the NACA scoop right next to the filter.
You can discard the o-ring.
It should NOT be mounted so the probe is actually poking inside the filter as this defeats the ability of the ECU to detect a plugged filter due to ice or contamination (the ECU will detect the pressure difference and if you have a StockFlightSytems EMU it will alert you to this problem)

We used an anchor nut and screw to mount to the cowl because you want to un-screw it and plug it back into the harness for ground runs with cowl removed (otherwise you get a Lane A warning: AATPS fault)

Thank you said by: Lance Goddard

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Re: Outside air, pressure, temperature sensor on 912iS

by Richard Boslaugh » 10 years ago

Richard Boslaugh

9 122 84

I mounted mine by replacing the rear fuel rail cover bolt with a longer bolt and a half inch stand off. The sensor ends up about 1/8th inch from the air filter and is out of the engine cooling air flow.

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Re: Outside air, pressure, temperature sensor on 912iS

by Lance Goddard » 10 years ago

Lance Goddard

1 2 0

Thanks, Richard. Doing the same thing.

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Re: Outside air, pressure, temperature sensor on 912iS

by geoffrey klestadt » 10 years ago

geoffrey klestadt

27 94 94

AAPTS? Is that a rotax part? Didn't see one when I bought the engine.

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Re: Outside air, pressure, temperature sensor on 912iS

by Richard Boslaugh » 10 years ago

Richard Boslaugh

9 122 84

It comes as part of the engine harness with the sensor wrapped in bubble wrap

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Outside air, pressure, temperature sensor on 912iS

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