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(g)   Once engines have been started ground crew still have to close
unmodified starter access doors before aircraft can take off, and some
positive indication of having done this must be given (slapping cockpit)
to prevent injury of ground crew.

(h)   Once ready, take off should be as quick as possible (check power
controls and T/0 clearance). If cloud has to be penetrated than leaders
must wait for their wingmen but otherwise aircraft can stream take-off turning
on to vector as soon as possible and climbing at maximum rate.

(j)   Early contact with the Ground Controller on the G.C.I. frequency
is essential so that a changed vector may be adopted as soon as possible.

(h)   In order to make an interception of maximum range it may be
necessary to:-

     (i)   climb at a faster and unoconomica1 speed.

     (ii)  throw away the mutual support between aircraft by
     climbing at maximum power.

The Interception.
 
6.   Most interceptions against "threat" targets would be of the displaced
parallel head-on typo, and the many considerations discussed in the H.S.I.
phase still apply.

7.   Once level at altitude it will be important to fly accurate speeds for
the interception and if a departure from the standard angle of bank is necessary
then the controller should be informed at the earliest possible time. (If the
wingman has lost out on the climb he can probably regain his position once
interception speed is attained).

8.   Pick up ranges should improve with bomber targets but beware the tendency
to under lead against large aircraft.

9.   Once "TALLYHO" has been called aircraft should leave the frequency to make
it available for control of other fighters.

The Attack.

10.  In planning an attack on a rear-armed bomber flying at high speed and
high altitude the following facts must be considered:-

     (a)   Speed of attack is essential. Complicated positioning may take so
     much time that the bomber may have released its bomb before the attack
     has developed.

     (b)   It is unlikely that at high altitude and high speed a true curve
     of pursuit can be accomplished outside the covering arc of the bombers guns.

     (c)   Because the bomber's guns are firing rear-wards they are likely to
     have a greater range than the guns of a forward firing fighter.

     (d)   It is probable that the bomber carries a greater ammunition load
     than the fighter.
                                                      /(e)
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