jobin Posted May 31, 2016 Share Posted May 31, 2016 Well, not exactly tail first, but approaching the sole runway from the opposite direction, compared to normal. That's what i saw for 5 hours this afternoon. Planes descending over the 700 yr stadium, rather than going up. Any ideas why coz i thought the normal way, descend over Hang Dong, was superior. Link to comment Share on other sites More sharing options...
Rob13 Posted May 31, 2016 Share Posted May 31, 2016 I noticed it too. Maybe going around the storm? Link to comment Share on other sites More sharing options...
MadMac Posted May 31, 2016 Share Posted May 31, 2016 Landing backwards must be quite a challenge. Did they fly upside down? Link to comment Share on other sites More sharing options...
T_Dog Posted May 31, 2016 Share Posted May 31, 2016 Golly, the winds changed direction in Chiang Mai? Link to comment Share on other sites More sharing options...
daveAustin Posted May 31, 2016 Share Posted May 31, 2016 Wind direction. Planes preferably land against the wind to have more air flow over the wings, maintaining stability, less chance of a stall. Link to comment Share on other sites More sharing options...
taotoo Posted May 31, 2016 Share Posted May 31, 2016 At least two threads on this previously with some in-depth discussion. Link to comment Share on other sites More sharing options...
Chicog Posted May 31, 2016 Share Posted May 31, 2016 Look which way the windsock is pointing. Link to comment Share on other sites More sharing options...
hugocnx Posted May 31, 2016 Share Posted May 31, 2016 Wind direction. Planes preferably land against the wind to have more air flow over the wings, maintaining stability, less chance of a stall. Indeed, you are right about that. However, almost year round planes landing at CNX land from south to north and thus have south-west tail wind as this is the wind direction almost all year. Since wind in Chiang Mai hardly excists it must have had to do with a stronger wind than normal (thunderstorms these days) so the landing direction got changed. My kingdom for a bottle. Link to comment Share on other sites More sharing options...
cnx355 Posted June 1, 2016 Share Posted June 1, 2016 Just checked radar24 this Tuesday morning and plane still land from the North. Flight SL500 is landing from the North at the moment. Not much quieter in the village now as we get the noise from the planes taking off as they climb and turn not far. Maybe they decided to try to have all planes landing and taking of in the same direction. easier to handle with heavier traffic. Link to comment Share on other sites More sharing options...
Dante99 Posted June 1, 2016 Share Posted June 1, 2016 Landing backwards must be quite a challenge. Did they fly upside down? They do not have to be upside down to be goint backwards, but yes it is quite a challenge. Link to comment Share on other sites More sharing options...
gandalf12 Posted June 1, 2016 Share Posted June 1, 2016 Planes land on the path that puts them landing into the wind as far as is possible. A tail wind can turn a plane over. Link to comment Share on other sites More sharing options...
ggt Posted June 1, 2016 Share Posted June 1, 2016 This is a perfect example of why many prefer to live outside the city...where people do not care which way the wind blows...so long as a fart is not attached to it... Link to comment Share on other sites More sharing options...
orpheus454 Posted June 1, 2016 Share Posted June 1, 2016 Planes land on the path that puts them landing into the wind as far as is possible. A tail wind can turn a plane over. Link to comment Share on other sites More sharing options...
bazza40 Posted June 1, 2016 Share Posted June 1, 2016 Look which way the windsock is pointing. It's pointing from right to left. Does that help? Link to comment Share on other sites More sharing options...
Aussie69 Posted June 1, 2016 Share Posted June 1, 2016 Yes they were using runway 18 for most afternoon due wind direction (because of storms) Link to comment Share on other sites More sharing options...
Aussie69 Posted June 1, 2016 Share Posted June 1, 2016 Heres some CNX arrival photos taken yesterday afternoon Link to comment Share on other sites More sharing options...
Gonsalviz Posted June 1, 2016 Share Posted June 1, 2016 Wind direction. Planes preferably land against the wind to have more air flow over the wings, maintaining stability, less chance of a stall. Um. No. They land against the wind to decrease landing roll. If you land down wind the roll out is greatly increased which could put one off the end of the runway. They take off into the wind to decrease the amount of runway required for takeoff. The power of the engines can easily provide the necessary wind across the wings. Link to comment Share on other sites More sharing options...
MadMac Posted June 1, 2016 Share Posted June 1, 2016 Heres some CNX arrival photos taken yesterday afternoon People gotta love Nimman area more everyday. Just look out for all the condo ads popping up describing a quiet location Link to comment Share on other sites More sharing options...
arunsakda Posted June 1, 2016 Share Posted June 1, 2016 We thought at least this was not another moan about aircraft noise, too late I guess. Suggest Stick and Rudder by Wolfgang Langewiesche, Aerodynamics for Naval Aviators (FAA publication series) Both about 400 pages. And Handling the Big Jets by JP Davies. A thorough reading will dispel the fundamental misunderstanding of basic aeronautic and flight operations principles suffered by so many on this subject. Link to comment Share on other sites More sharing options...
Chicog Posted June 1, 2016 Share Posted June 1, 2016 Look which way the windsock is pointing. It's pointing from right to left. Does that help? Yes, but look at the wind. Link to comment Share on other sites More sharing options...
BernieOnTour Posted June 1, 2016 Share Posted June 1, 2016 Raining season starting, so the general wind direction flips 180 deg. from Northeast monsoon to Southwest monsoon ... Link to comment Share on other sites More sharing options...
BlindMagician Posted June 1, 2016 Share Posted June 1, 2016 Bit more effort with titles please, try to say what you mean. Link to comment Share on other sites More sharing options...
CMKiwi Posted June 1, 2016 Share Posted June 1, 2016 Look which way the windsock is pointing. It's pointing from right to left. Does that help? Yes, but look at the wind. I looked for the wind but couldnt see it, so I shot into the air and mist... Link to comment Share on other sites More sharing options...
Aussie69 Posted June 1, 2016 Share Posted June 1, 2016 Wind direction. Planes preferably land against the wind to have more air flow over the wings, maintaining stability, less chance of a stall.Um. No. They land against the wind to decrease landing roll. If you land down wind the roll out is greatly increased which could put one off the end of the runway.They take off into the wind to decrease the amount of runway required for takeoff. The power of the engines can easily provide the necessary wind across the wings. Dave is correct, however a consequence of increased airflow over wings means lower ground speed, which results in shorter take-off/landing roll-out, so you are both correct Link to comment Share on other sites More sharing options...
Rob13 Posted June 1, 2016 Share Posted June 1, 2016 Bit more effort with titles please, try to say what you mean. We will all start running thread titles by your desk for editing before posting. Link to comment Share on other sites More sharing options...
arunsakda Posted June 1, 2016 Share Posted June 1, 2016 (edited) You know, the 737 I fly is certificated for 15 knot tailwind takeoff/landing as long as certain conditions are complied with. Then we routinely climb up to altitude and sometimes enjoy tailwinds of 80, 100, 200+ knots, you name it So why do we not "flip over", experience "instability", or stall? Yes, a tailwind increases takeoff or landing distance required (ceteris paribus) but "Air flowing accross the wings" has nothing to with groundspeed and tailwind operations are not germane to a discussion of aerodynamic stability or stalling at all. I understand why people might think such things, but they never read it in any flight manual or heard it from somebody who knows what they are talking about so it is baffling to me why people continue to post such rubbish, even on an internet forum. Then again so-called professional journalists publish sensational inane things all the time whenever there is a major accident/incident. Based solely on speculation and with poor understanding of basic aeronautic principles and flight operations standards and procedures. CNN "B777 will struggle hold altitude with empty fuel tanks!" Edited June 1, 2016 by arunsakda Link to comment Share on other sites More sharing options...
lexilis Posted June 1, 2016 Share Posted June 1, 2016 On Monday the main approach to Chicago's O'hare airport was reversed twice in one hour (due to shifting winds). Here is the video of the process: https://www.facebook.com/flightradar24/videos/1094161123956643/ Somehow they get all of that choreographed safely. Bit more going on there than around CM! Link to comment Share on other sites More sharing options...
sanukjim Posted June 1, 2016 Share Posted June 1, 2016 (edited) All over the world airports call this "Turning the airport around" when the extreme changing of wind occurs. Suvarnabhumi airport does this often during the storm season.So now you know. Edited June 1, 2016 by sanukjim Link to comment Share on other sites More sharing options...
Rob13 Posted June 1, 2016 Share Posted June 1, 2016 (edited) All over the world airports call this "Turning the airport around" when the extreme changing of wind occurs. Suvarnabhumi airport does this often during the storm season.So now you know. We just call it landing backwards here. Edited June 1, 2016 by Rob13 Link to comment Share on other sites More sharing options...
Jdiddy Posted June 1, 2016 Share Posted June 1, 2016 (edited) Pretty sure ive seen them landing and taking off both ways back to back there too, as in aircraft 1 lands from the south then aircraft 2 takes off to the south straight after Edited June 1, 2016 by Jdiddy Link to comment Share on other sites More sharing options...
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