IRS Button

[Blackhawk]

Okay, what does it do?  Can't really find anything in the POH.  You can guess the kind of garbage I get when I google it.

[Skywarrior]

Inertial Reference System

Quote:

"IRS is a set of 3 IRUs (inertial reference units) that use accelerometers, l@ser gyros, etc, to determine the a/c´s position. They crosscheck their results against signals received from VORs and DMEs.
They compare the info they come up with against each other, and if one of them shows conflicting info, the other 2 units kick it out.
When no ground radio station signals are received for more than 12 mins (I think) the IRS will announce "IRS NAV ONLY" alerting the crew that´s the only source of navigation. After, say, an 8 hour flight over the ocean, when it first picks up a VOR nav accuracy upgrades, but most of the time you don´t notice the plane modifying its course in response to the upgrade, it´s real accurate."

 

Chuck M.

[thinwing]

do you mean the irc button on the pilots yoke??.If so that is the internal recorder clearance ..push once for last atc transmission..kpc

[carusoam]

The government has now supplied a button in which you can tax yourself for each mile you fly or on demand.

Who needs fuel tax, new registrations, or photo IDs?  You have your very own IRS button installed.

Not-so-sincerely,

-a-

[Blackhawk]

Quote: Skywarrior

Inertial Reference System

Quote:

"IRS is a set of 3 IRUs (inertial reference units) that use accelerometers, l@ser gyros, etc, to determine the a/c´s position. They crosscheck their results against signals received from VORs and DMEs.

They compare the info they come up with against each other, and if one of them shows conflicting info, the other 2 units kick it out.

When no ground radio station signals are received for more than 12 mins (I think) the IRS will announce "IRS NAV ONLY" alerting the crew that´s the only source of navigation. After, say, an 8 hour flight over the ocean, when it first picks up a VOR nav accuracy upgrades, but most of the time you don´t notice the plane modifying its course in response to the upgrade, it´s real accurate."

 

Chuck M.

And the function of the button on the yoke is...

[FlyDave]

In California we have an IRS button in our airplanes.

It is used when the tax man comes around (in Los Angeles the agency is called the "Board of Equalization" - how offensive is that?). The IRS button hides any new avionics and upgrades, temporarilly tears the upholstery and dulls the paint so our planes don't get assessed at a higher value and we don't get "equialized" out of more taxes. Once the assessment is done, we push the IRS button again and the plane returns to it's previous state .

 

NOT! (but I wish it were so!!)

 

[Jeff_S]

Are you kidding me? They actually call it the "Board of Equalization"? That's just a whole other country.

[docket]

Plays back the last info transmitted.

[FlyDave]

Quote: Jeff_S

Are you kidding me? They actually call it the "Board of Equalization"? That's just a whole other country.

[Blackhawk]

Quote: thinwing

do you mean the irc button on the pilots yoke??.If so that is the internal recorder clearance ..push once for last atc transmission..kpc

[Blackhawk]

Quote: FlyDave

Da, Comrade......

http://www.boe.ca.gov/

[thinwing]

oops...I cant type it is irs..on the pilots right yoke horn.....and does what I said...try putting on your headsets ,master avionics on,and than push the Da## button!!!!..LOL k