|Quoting Blackbird1331 (Reply 5):|
Maybe it was empty and on a ferry flight.
|Quoting Zkpilot (Reply 3):|
Possibly a bit shorter than normal, but with a good headwind and light load its nothing unusual.
|Quoting Jawed (Thread starter):|
As far as I can tell this 747 goes from zero to rotation in about 20 seconds.
|Quoting HighFlyer9790 (Reply 12):|
Also, flaps look as it they are at 10, as opposed to heavier takeoffs w/flaps 20
|Quoting PhilSquares (Reply 13):|
Heavyweight takeoffs aren't necessarilary done with flaps 20. Flaps 20 will get more weight off the runway (especially short) but you take a big hit in climb performance.
Generally speaking for most runways Flaps 10 will be more than enough to get the aircraft off at MTOW and have not take a hit on climb weights.
|Quoting DH106 (Reply 14):|
Can you not get the best of both worlds and do Flaps 20 until shortly after t/o then Flaps 10 for the climb? Presumably there's a strict retraction schedule for height/speed that precludes this?