Flap 2 and flap 10 were added to the other flap positions on the –200Adv in 1971 as part of a series of improvements to the wing and flap sequencing. Both are intermediate approach settings since take-off’s are only ever scheduled for flap 1, 5 or 15 and 2 & 10 are not used during the retraction sequence.
Using flap 2 & 10 reduced the aerodynamic loads on the flaps at 5 & 15 (people using flaps as speedbrakes!) because they had to be flown at the next higher block speed. Unfortunately, with the introduction of the new increased flap speed schedule last year, flap 2 is now redundant. However flap 10 is still used on approach at 170kts when the weight is below 53,070kgs.
S & L
See
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