Before taking off from other airports, the wind direction and wind speed at SBGR are displayed normally, but during the flight to SBGR, the weather status changes to “no weather” (a total of about 1 hour and 30 minutes of flight), and this situation occurs many times. After checking, it is confirmed that the WI-FI is normal, the system status of IF is marked green, and some other airports near SBGR display wind direction and wind speed as usual. Is it something I did wrong?
Nothing you did wrong. Just the METAR not reporting the conditions (common scenario). The actual winds should still behave as expected.
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When approaching SGBR airport (before the weather status changed to “no weather”), the last displayed speed was 110@5kt, but it changed to about 50@5kt during the final approach. More importantly, if the final speed was 50@5kt, the APPR should automatically help the aircraft to form a left drift angle (10L runway), but the aircraft actually deviated to the right. Is this an abnormal situation?
If your aircraft is yawing to the left (as it should with crosswind from the left) a roll input to the right is expected to correct the flight path.
I think he means it yawed to the right when it should be yawing left
Could be true, however a movement like that is very illogical, and him actually talking about a roll would make much more sense.
Yes，exactly
Hi，the reason I’m asking here is precisely because it doesn‘t make sense.I’m afraid I might encounter this situation again on a future long-haul flight.
I experimented with this a little.
Did 3 approaches with the 737-800 and the 777-300ER into SBGR’s 10L. Changed the wind from 110/5 to 050/5 . The aircraft yawed to the left every single time.
I recommend you as well try to recreate this in solo in order to better understand what happened.
May I ask if you made manual corrections directly? It seems we’re still discussing two different situations. Approximately 10 minutes before landing, I observed the latest airport weather was 110° at 5 kt. At around 3,200 feet AGL, the airport weather changed to ‘no weather information available.’
During the final approach phase (APPR) under ‘no weather’ conditions, I estimated the crosswind component to be approximately 50° from the NW at 5 kt based on the bottom status bar. The aircraft should have exhibited left yaw drift, but instead it was weathervaning downwind – which contradicted the information displayed on the status bar.
Therefore, what I want to know is: In ‘no weather’ conditions, is there a better way to anticipate wind behavior? And are the weather data values displayed on the bottom status bar during the approach phase actually reliable for reference?