Originally Posted by 12172003
My friend told me that UA does almost all approaches by hand rather than doing AP-coupled-approaches (obviously not including CAT II and CAT III). So it could be anumber of things including AGPWS, landing gear set/locked/confirmed reminder, radar altimeter passing through ? AGL feet. Heck, even the C182 my friend flew (I was safety pilot) had a whoop when passing through 500 feet. Not sure what that was linked to though and forgot to ask him. Maybe it was the FA call button requesting another root beer.
But does UA fly CRJ's? Last time I checked they do not fly them, and the operators of these aircraft may have different operating procedures. Altitude warnings are usually voice so you know which altitude you are passing through from as how would you know the difference between 500 AGL versus your Mininums callout by tone.