B737NG GPWS Height Callouts

[flyer4life]

Hi,

Could someone please tell me at what height RA do the callouts start... 2500ft or 1000ft?

Also, after a go-around are there some requirements which much be met in order to reset the height and minimums callouts, ie. so they are audible during the second approach?

Many thanks,
flyer.

[QAVION]

All the 20 or so height callouts are programmed to suit the customer airline's needs, Mr "Flyer"

The "Twenty Five Hundred" callout can also be "Radio Altimeter". I believe these two have become more popular in recent times because they have been known to save aircraft... This callout is like a "heads up" alert for those who have found themselves closer to the ground than they thought they were. In some cases, it may provide a warning sooner than a full GPWS warning.

Hope this helps.
Regards.
Q.

Problems with PMDG? ;)

[crvm]

The callouts are options on the NG. So it will not be the same or might not be the same on most airlines. The options are as follows:

* 2,500 feet
* 1,000 feet
* 500 feet
* 100 feet
* 50 feet
* 40 feet
* 30 feet
* 20 feet
* 10 feet

DH/MDA Callouts

The GPWS provides height callouts based on the altitude set by the Captain's Minimums selector
* DH/MDA plus 100 feet - PLUS HUNDRED
* at DH/MDA - MINIMUMS

[QAVION]

"If you were in an unsteady approach [purely hypothetical at tis HEIGHT hopefully] and undulated above and below one of the heights relating to a callout, would you hear the callout every time you descended below [propbably should read through] the said height."

Actually, the newer systems are designed not to do this. You will have to climb above the first altitude callout you heard to reset and hear them again. Theoretically, a repeating callout would only happen at the first height.

The height options for the NG, according to our Maintenance Manual, are...

2500 ("Twenty Five Hundred" or "Radio Altimeter").
1000
500
400
300
200
100
50
40
30
20
10.

Then there are the "Minimums" or "Minimums, Minimums" callouts and the following....
"Plus Hundred" (when 100' above DH)
"Approaching Minimums" (when 80' above DH).
"Approaching Decision Height"
"Decision Height"
Customers can also request special heights, such as 60'.

Regards.
Q.

P.S. Some desktop simulators allow you to select the ones you want to hear.

[flyer4life]

Thanks for the replies guys.