Hello
I was wondring.
If im right, the normal usage of flaps is 1, 5, 15, 30 and 40. (I may be very wrong)
Each flaps have its own minimum/schedule maneuvering speeds.
Below 53 tons the Boeing manual says (schedule):
Up: 210kts
1: 190
5: 180
10: 170
15: 150
25: 140
The IXEG Checklist says (minimum):
Up: 210kts
1: 190
5: 170
10: 160
15: 150
25: 140
What I dont understand here is that the Boeing manual says that the flap maneuver speed provide approximately 15-20 knots above the minimum maneuvering speed for each flap setting. But the flaps settings for schedule and minimum are the same except flap 5 and 10.
Back to the normal flap usage, how strict is it to follow that? or is it strict at all?:
If I follow the schedule, can I use flap 10 if ATC tells me or a procedure requiers me to maintain 170 kts, or should I then go flap 15?
What is best practice?