Flying at 9000ft in the proximity of a 13000ft mountain.
Announcement
Collapse
No announcement yet.
37 sould and an AF 777 saved by GPWS
Collapse
X
-
Well we've already established AF can't aviate, now it appears they can't navigate either. I guess communication is next!
On a slightly more serious note... a 777 operating a 65-mile leg at FL090 - isn't that a little weird?Be alert! America needs more lerts.
Eric Law
-
Why the GPWS and not a much earlier warning from the basic navigation TV with an airlplane symbol and flashing red terrain that's near the plane's altitude or higher?Les règles de l'aviation de base découragent de longues périodes de dur tirer vers le haut.
Comment
-
Originally posted by 3WE View PostWhy the GPWS and not a much earlier warning from the basic navigation TV with an airlplane symbol and flashing red terrain that's near the plane's altitude or higher?
- First, it's an optionional feature that requires purchase and subscription to keep updated.
- Second, if installed, it's optional whether you have this fucntion selected or not.
--- Judge what is said by the merits of what is said, not by the credentials of who said it. ---
--- Defend what you say with arguments, not by imposing your credentials ---
Comment
-
Originally posted by Gabriel View PostTerrain information is optional twice:
- First, it's an optionional feature that requires purchase and subscription to keep updated.
- Second, if installed, it's optional whether you have this fucntion selected or not.
With all the computer monitoring gizmos why isn't there a "GPS" system and a TV with an amazingly simple depiction of terrain to alert the pilots a minute or two before a radar altimeter sees a problemLes règles de l'aviation de base découragent de longues périodes de dur tirer vers le haut.
Comment
-
EGPWS (which that 777 surely had) is basically just that. It looks at the aircraft's current location and flight path, and uses a database to determine if the a/c is headed toward terrain. If it is, it of course issues a warning.
I believe most if not all EGPWS systems also include a graphical display, but as Gabriel pointed out it's probably part of a multifunction display which may not have been showing that info at the time.Be alert! America needs more lerts.
Eric Law
Comment
-
Originally posted by 3WE View PostI was being more philosophical.
With all the computer monitoring gizmos why isn't there a "GPS" system and a TV with an amazingly simple depiction of terrain to alert the pilots a minute or two before a radar altimeter sees a problem
The system assumes that the pilot knows what he is doing until it says "Or does he? Terrain, terrain, woop woop pull up."
--- Judge what is said by the merits of what is said, not by the credentials of who said it. ---
--- Defend what you say with arguments, not by imposing your credentials ---
Comment
-
Originally posted by 3WE View PostI was being more philosophical.
With all the computer monitoring gizmos why isn't there a "GPS" system and a TV with an amazingly simple depiction of terrain to alert the pilots a minute or two before a radar altimeter sees a problem
Comment
-
Originally posted by Evan View PostYou're talking about synthetic vision. I think the 787 and A350 have it. Not a simple graphic depiction as you suggest but I think simple and graphic would be better. Don't fly into the red shape.Les règles de l'aviation de base découragent de longues périodes de dur tirer vers le haut.
Comment
-
One relevant question would be "*was* this actually a newsworthy event"?
I think with the original GPWS systems a "pull up, terrain" warning would be close to being an emergency. With only radio altimeter input, it would only give a warning when you actually *reached* rising terrain, and an immediate rapid climb or turn would be needed to avoid an impact.
EGPWS systems can give a warning up to 5 miles ahead of time. So it could be much less urgent - more of a "you better climb *before* getting that cup of coffee rather than after". Depending on the specifics of the situation of course.
I guess what I'm saying is while a truly good pilot would probably never get such a warning, an EGPWS terrain warning could indicate slightly subpar performance on the pilot's part whereas the same warning from a GPWS system means you're *that close* to killing everyone on board.Be alert! America needs more lerts.
Eric Law
Comment
-
Originally posted by elaw View PostEGPWS systems can give a warning up to 5 miles ahead of time.
I imagine SVS would have the same dispatch allowances. Technology is a great asset but as long as it can be MEL'd we still need pilots that are not as daft as certain AIR FRANCE pilots I can think of...
Comment
-
Originally posted by elaw View PostOne relevant question would be "*was* this actually a newsworthy event"?
I think with the original GPWS systems a "pull up, terrain" warning would be close to being an emergency. With only radio altimeter input, it would only give a warning when you actually *reached* rising terrain, and an immediate rapid climb or turn would be needed to avoid an impact.
EGPWS systems can give a warning up to 5 miles ahead of time. So it could be much less urgent - more of a "you better climb *before* getting that cup of coffee rather than after". Depending on the specifics of the situation of course.
I guess what I'm saying is while a truly good pilot would probably never get such a warning, an EGPWS terrain warning could indicate slightly subpar performance on the pilot's part whereas the same warning from a GPWS system means you're *that close* to killing everyone on board.
--- Judge what is said by the merits of what is said, not by the credentials of who said it. ---
--- Defend what you say with arguments, not by imposing your credentials ---
Comment
-
Originally posted by elaw View PostWell we've already established AF can't aviate, now it appears they can't navigate either. I guess communication is next!
"Fighter jets escort Air France plane to Kennedy Airport after threats against flights bound for New York, New Jersey":
But it was the slow response to U.S. government requests for information from the cockpit of Air France Flight 22 that sent the F-16s screaming into the sky, sources said.The U.S. military scrambled its jets Monday and escorted a New York City-bound flight into Kennedy Airport after a cruel crank caller told cops chemical weapons were on the plane. Two other flights…
Comment
Comment