On 6/26/2023 at 11:08 AM, Alvega said:

Check all the circuit breakers.

I have not flown a real life c152 for about 25 years so my memory is hazy, but if I recall correctly the ASI worked by comparing pitot tube pressure with static port pressure and possibly worked with engine vacuum though I am not sure about the vacuum.  No electrics as far as I recall, but I may be wrong.

Sooo  ... pitot tube, static port and possibly suction would be the things to check in a real aircraft.

One thing that was always in the check list back then was the suction gauges that worked the gyro etc for vacuum pressure.

Edited June 27, 20232 yr by Glenn Fitzpatrick

52 minutes ago, Glenn Fitzpatrick said:

I have not flown a real life c152 for about 25 years so my memory is hazy, but if I recall correctly the ASI worked by comparing pitot tube pressure with static port pressure and possibly worked with engine vacuum though I am not sure about the vacuum.  No electrics as far as I recall, but I may be wrong.

Sooo  ... pitot tube, static port and possibly suction would be the things to check in a real aircraft.

One thing that was always in the check list back then was the suction gauges that worked the gyro etc for vacuum pressure.

There's a circuit breaker for the beacon and pitot. That's the one that can cause the issue.

oh yeah pitot heat, forgot about that

I'm having the same problem.

Everything else working, but no movement on airspeed.

 

Follow the checklist, Pitot heat on (just in case).  Circuit breakers are good.  Suction gauge in panel is mid-scale.

Tried restarting and rebooting but behavior is the same.

 

Hopefully tonight I can spend more time with it and toggle realism/state saving off from the tablet.

Might also be time to check Community folder for conflicts.

 

 

22 hours ago, Alvega said:

If airspeed doesn't work either you didn't cover the pitot when you left last session or you have a popped circuit braker.

Why on earth would a circuit breaker in a C 152 cause the airspeed indicator, which is driven by the pressure in the pitot tube, not read airspeed?

Edited June 27, 20232 yr by Bobsk8

17 minutes ago, Bobsk8 said:

Why on earth would a circuit breaker in a C 152 cause the airspeed indicator, which is driven by the pressure in the pitot tube, not read airspeed?

Perhaps because the pitot heat is not functioning? 🙄

2 minutes ago, Alvega said:

Perhaps because the pitot heat is not functioning? 🙄

OP said he is flying in the Caribbean. Don't think you need pitot heat there in a C 152. 

2 minutes ago, Bobsk8 said:

OP said he is flying in the Caribbean. Don't think you need pitot heat there in a C 152. 

 

Then he probably got a wasp in the pitot tube because he didn't cover it 😄

https://avherald.com/h?article=50af272c&opt=0

Just did a circuit at Bora Bora. 29 knot wind.  No air speed active. Not circuit breaker problem, not Pitot cover left on. Alternator light on dash doesn't seem to respond to low rpm's either. I'm pretty sure it didn't use to work like that.  Using the beta.

15 minutes ago, jimcarrel said:

Just did a circuit at Bora Bora. 29 knot wind.  No air speed active. Not circuit breaker problem, not Pitot cover left on. Alternator light on dash doesn't seem to respond to low rpm's either. I'm pretty sure it didn't use to work like that.  Using the beta.

Beta? What beta? 

8 minutes ago, Alvega said:

Beta? What beta? 

AAU02

1 minute ago, jimcarrel said:

AAU02

Oh, AAU2 is not beta anymore. You say no pitot cover left on during flight, but did you put in on when you finished last flight or left it without the cover?

I guess there are hundreds of aircraft across the country that are going to take off with no airspeed indication because of pitot tubes blocked by bugs 🙄

My flight school didn't use pitot covers on any of the rentals. Not saying they aren't a good idea, just saying it isn't particularly realistic if leaving the cover off between sessions automatically causes the pitot tube to get blocked, especially since there is no way in the sim to actually check/clear a block during a walk around.

7 minutes ago, Funky D said:

I guess there are hundreds of aircraft across the country that are going to take off with no airspeed indication because of pitot tubes blocked by bugs 🙄

My flight school didn't use pitot covers on any of the rentals. Not saying they aren't a good idea, just saying it isn't particularly realistic if leaving the cover off between sessions automatically causes the pitot tube to get blocked, especially since there is no way in the sim to actually check/clear a block during a walk around.

It doesn't automatically causes it to get blocked, but there is a chance that happens, like IRL.

3 hours ago, jimcarrel said:

Just did a circuit at Bora Bora. 29 knot wind.  No air speed active. Not circuit breaker problem, not Pitot cover left on. Alternator light on dash doesn't seem to respond to low rpm's either. I'm pretty sure it didn't use to work like that.  Using the beta.

Found this message the dev posted on Discord last month about the light:

Quote

It’s actually an “over-voltage” light per the POH, something not done in the sim, and would be hard to replicate given how locked down the electrical system is.

So for this plane, it’s been “re-wired” to act as a battery low voltage light, as a warning that the battery is probably not being charged by the alternator.

According to the dev the light should turn on when the battery charge is under 24.5v.

Edited June 28, 20232 yr by Alvega