B737 N-1 Flaps 10 circling, why?
Thread Starter
Joined: Apr 2006
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From: Europe
B737 N-1 Flaps 10 circling, why?
Dear all,
Can anyone explain the reason why Boeing wants flaps 10 for a B737 N-1 circling? I can understand why we wait with gear down, flaps 15. But if it is to increase maneuvre margin why not use it on a normal circling as well?
Thanks in advance,
Kirk
Can anyone explain the reason why Boeing wants flaps 10 for a B737 N-1 circling? I can understand why we wait with gear down, flaps 15. But if it is to increase maneuvre margin why not use it on a normal circling as well?
Thanks in advance,
Kirk
Joined: Jun 2000
Posts: 4,507
Likes: 4
From: last time I looked I was still here.
Which B737? ON NG's F10 is same speed as F5 but more drag, so doesn't seem a good idea. On the classic with fixed speed schedules for flaps, F10 will give you a reduced IAS and at max wt. bring you within Cat C circling minima. At high wt's. F5 might take you into Cat D and perhaps higher minima. You'll need to check the speeds; I don't have them to hand.
