Could anyone describe (or direct to usable documentation) me aircraft configurations? What does it mean clean configuration, configuration 1, 1+F, 2, etc... Is there any section in FCOM's describing it in clear way?

  • 2
    $\begingroup$ You don't have to sign your question like an email. We got a link to your user right there at the bottom right ;) $\endgroup$
    – zundi
    Jun 22, 2016 at 22:07
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    $\begingroup$ @zundi - it's a hard thing to get used to... $\endgroup$
    – FreeMan
    Jun 23, 2016 at 12:08

2 Answers 2


A clean configuration is a configuration where landing gear, flaps, slats, spoilers etc. are retracted.

1, 1+F, 2, 3 and FULL refer to the level at which the flaps are currently deployed:

  • $\begingroup$ Thanks for clear answer, it helps a lot! Could you clarify, is it taken from fcom (exact chapter) or some other documentation? $\endgroup$
    – Robert
    Jun 22, 2016 at 17:13
  • $\begingroup$ The image comes from the FCOM Aircraft Systems, 27 Flight Controls, 30 Flaps & Slats, 20 Controls & Indications, - Pedestal (source: pprune.org/tech-log/…) $\endgroup$ Jun 22, 2016 at 17:48
  • $\begingroup$ Do you remember whether the 1+F position is selected during extension or retraction? $\endgroup$
    – Jan Hudec
    Jun 22, 2016 at 19:59

To clarify lever movement direction and actual flap/slat combination, I attached a more detailed snippet from the A340 FCOM § 1.27.50

Note that in-flight selection of 2 above 193.5 kt equals config 1* (same as 1+F but with more slats).

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  • $\begingroup$ That's...quite complicated, especially the 1+F. I always prefer Boeing. $\endgroup$
    – kevin
    Jun 23, 2016 at 14:19

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