Timeline for When receiving a TCAS RA, DESCEND DESCEND, and starting the descent, if a pilot received GPWS warning, TERRAIN, what would they do?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Nov 20, 2015 at 17:31 | comment | added | Wirewrap | If you are in a canyon and receive both GPWS and TCAS alerts, maybe panicking is your best option? | |
| Nov 19, 2015 at 18:52 | comment | added | voretaq7 |
@GdD If the aircraft is climbing then contact with the ground shouldn't be a concern if turning. <-- Depends on the terrain. For example if you got a GPWS alert in a canyon because the floor is rising making a turn (even in a climb) could cause you to impact the canyon wall. I'd wager the climb and the chance of hitting another aircraft would still be preferable to a descent and the certainty of hitting terrain though: You've got a better chance with Big Sky than you do with Big Dirt.
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| Nov 19, 2015 at 16:35 | comment | added | GdD | This scenario is pretty unlikely as I don't think TCAS would say to descend if it was going to cause a terrain warning. As for communicating, that's actually a bad idea as it could cause confusion. See the Underlingen disaster as an example of that. | |
| Nov 19, 2015 at 15:41 | comment | added | Tom | Makes sense. Also wouldn't it be better to instruct the aircraft above to ascend? what is the likelihood of this ever occurring? | |
| Nov 19, 2015 at 15:38 | comment | added | GdD | If the aircraft is climbing then contact with the ground shouldn't be a concern if turning. If you fly straight ahead then you will potentially be putting the aircraft into conflict again, so while turning could potentially increase the possibility of collision it has a greater chance of decreasing it. | |
| Nov 19, 2015 at 15:20 | comment | added | Tom | Wouldn't turning increase the probability of crashing with the ground and/or the aircraft? | |
| Nov 19, 2015 at 12:56 | history | answered | GdD | CC BY-SA 3.0 |