G5 indicated airspeed vs Stock indicator

[Joe Larussa]

Any of you G5 guys notice a difference in the ships airspeed indicator and your G5? Mine used to be dead on and now I'm seeing a variable difference of plus or minus 3-4 Mph.

[carusoam]

Sounds like a leak may have shown up recently?

Would one instrument be more sensitive to the leak than the other?

Which one is showing the slower IAS?   Old mechanical or new electronic?

Has the G5 started showing GPS ground speed for some reason instead of IAS?

Pp thoughts only, not a mechanic.

Best regards,

-a-

[Joe Larussa]

Seems like I just noticed it in the last few weeks. Going in for IFR cert tomorrow.

[N201MKTurbo]

Mine is dead on. I installed it as a HSI, but sometimes I put it in PFD mode and it is always dead on with both airspeed and altitude.

[kris_adams]

when posting your speed, use the faster one of course lol

[jetdriven]

42 minutes ago, Kris_Adams said:

when posting your speed, use the faster one of course lol

And pull the alternate static first. Its the cheapest speed mod.

Edited February 23, 2018 by jetdriven

[Mooney in Oz]

I have an Aspen and it has always indicated about 2 KIAS slower and 50-60 feet lower in cruise than the steam indicators.

[jetdriven]

the POH shows that the IAS is about 2 mph faster than CAS at normal cruise speeds

[Joe Larussa]

Passed IFR cert. No leaks. Tech says plus or minus three is within tolerance.