8-key flute fingerings:

Most of these fingerings are ones I commonly use, along with some odd ones
that have come in handy, plus a few new ones that turn up during gigs and
are useful to someone..
Online fingering chart facsimiles, for multi-key flutes, can be found on this useful page, a part of Rick Wilson's website.
NOTES: These work for ME on MY FLUTES, a R. Cameron H. Grenser copy, and a 
       R. Cameron Rudall copy.  Your mileage may vary.  All flutes are a little
       different, even if they are the same copy by the same maker, and all
       players are different too.  On my flutes, I don't use the exact same
       fingerings for all the notes.  The high register can be especially 
       divergent.  There are a number of useful alternate fingerings for
       special situations, and intonation fixes.  I'll include the ones I
       know, but this is by no means an exhaustive list.  When the "7" is noted
       (right hand little finger on the Eb/D# key) that means that the finger is
       down, activating the key.  When the "7" is in parentheses (7) it means
       that pressing this key down is optional, mostly for convenience (balance).
       The fingerings are vaguely listed in order of "usualness".

Legend: (keys other than the right hand Eb/D# key are noted in [] brackets).
  +F   :  F key (can be either right hand F or the long F key, but generally
                the right hand F, unless circumstances necessitate the Left)
  +LF  :  Long F key (left hand)
  +C   :  long c key (right hand)
  +Bb  :  Bb/A# thumb key (left hand)
  +G#  :  g#/Ab key (left little finger)
  +RL1 :  Low C#/Db key (Right Little finger)
  +RL2 :  Low C key (Right Little finger.  This key usually also pushes down RL1.
                    If it doesn't, you will need to.)

First Octave (starting on low C, ascending)
-------------------------------------------
C     123 456 [+RL2] (this is 'middle C')
C#/Db 123 456 [+RL1]
D     123 456
D#/Eb 123 456 7
E     123 45-
      123 45- 7 (sharp.  May be necessary on some flutes.)
F     123 45- [+F]
      123 45- [+LF] (useful for example when slurring to F from low D)
      123 4-6
F#    123 4-- 7
      123 4-- [+F]
      123 4-- 7 [+F]
      123 4-- 7 [+F +LF] (helps to raise it, if needed)
G     123 --- 
G#/Ab 123 --- [G#]
      12- 456   (G# fingering)
      12- 456 7 (Ab fingering)
A     12- --- 
A#/Bb 12- --- [+Bb]
      1-3 45-   (Bb fingering)
      1-3 456 7 (A# fingering)
B     1-- --- 


Second Octave (Middle register, ascending)
------------------------------------------
C     1-- --- [+C]
      -23 ---  
      -2- ---  (sharp, usually)
C#/Db --- --- 
      --- -5-  (I find that this fingering stabilizes this note on my Grenser)
      --- --6  (like the previous, but a different color sound)
      --- --- [+C]  (quite sharp, but sometimes useful)
D     -23 456
      -/3 456 (vent 2 to raise pitch)
D#/Eb -23 456 7
      123 456 7
E     123 45-
      123 45- 7
F     123 45- [+F]
      123 45- [+LF]
F#    123 4-- 7
      123 4-- [+F]
      123 4-- 7 [+F]
      123 4-- 7 [+F +LF]
G     123 --- 
G#/Ab 123 --- [G#]
      12- 4-- 7 (Ab fingering)
      12- 4--   (remove 7 to lower Ab fingering but retain A flat colour)
      12- 4-6 7 (G# fingering)
A     12- --- 
      12- --- [+F]  (Add LH F key to raise pitch slightly)
      12- --- [+G#] (if you add G# key it is unreasonably sharp but really, really useful for pianissimi)
A#/Bb 12- --- [+Bb]
      1-3 ---   (A# fingering)
      12- 456 7 (Bb fingering)
      12- 456 / (vent 7 on Bflat fingering to flatten but retain flat colour)
B     1-- --- (7)
      1-- 456  (good for pianissimo)


Third Octave (High register, ascending)
---------------------------------------
C     1-- --- (7) [+C]
      -2- 456 7 
C#/Db --- --- 7 [+C]
      --- ---   [+C]
      --- 4-6 7
      --- 45- 7
      --- -5- 
D     -23 --- 7
      -23 4-6
      -23 456
      123 456
      --3 --- 7 (very sharp, or right in tune, depending on the flute) 
D#/Eb 123 -56 7
      123 -56 7 [+g#] (raises it)
      -23 -56 7
E     12- -56 7
      12- -56 7 [+g#] (raises it)
      /2- -56 7 (vent 1:st finger to raise it)
      12- -/6 7 (vent 5:th finger to raise it)
F     12- 4-- 7 ("standard" baroque flute fingering)
      12- 45- 7 [+F]
      12- 45- 7 [+F +Bb] (the thumb key raises it)
F#    1-- 4-- 7
      12- 4--
      12- 4-- [+F] (Add RH F key to raise pitch)
G     1-3 ---
G#/Ab --3 ---
      --3 --6 7
A     -23 45-
      -23 45- [+C +g#] (makes it speak a little easier, also raises it a little)
      Note: Lowering the high A is harder.  Mine is sharp.  I ended up adjusting the
            cork so the a is in tune, then dealing with the e-g going a bit flat.
            One other solution was to put a wire over the low C# hole so the key
            couldn't close all the way, then pressing the c# key down while using
            the standard A fingering, effectively half-holing it, lowering the pitch
            a little, but its an awkward fingering in faster passages.
A#/Bb -2- 4--
      -2- 45- [+g# +F]


Classical piccolo special fingerings:
-------------------------------------

A' (2nd octave a) - pianissimo fingering: 12/ 456 (half hole the 3rd hole, blow softly)