Issued with A.L.No.23/J                                          A.P.1565B, Vol.I Sect.2     

                                SPINNING

   12.  (i) Spinning is permitted by pilots who have written
            permission from the C.O. of their squadron (C.F.I. of
            an O.T.U.).  The loss of height involved in recovery
            may be very great, and the following height limits
            are to be observed:-

            (a) Spins are not to be started below 10,000 feet.

            (b) Recovery must be started not lower than 5,000 feet.

       (ii) A speed of over 150 m.p.h. I.A.S. should be attained
            before starting to ease out of the resultant dive.

                               AEROBATICS

   13.  (i) This aeroplane is exceptionally good for aerobatics.
            Owing to its high performance and sensitive elevator
            control, care must be taken not to impose excessive
            loads either on the aeroplane or on the pilot and
            may be done at much less than full throttle.  Cruising
            r.p.m. should be used, because if reduced below this,
            detonation might occur if the throttle is opened up
            to climbing boost for any reason.

       (ii) The following speeds are recommended for aerobatics:-

            Looping

            Speed should be about 300 m.p.h. I.A.S. but may be
            reduced to 220-250 m.p.h. when the pilot is fully
            proficient.

            Rolling

            Speed should be anywhere between 180 and 300 m.p.h.
            I.A.S.  The nose should be brought up about 30° above
            the horizon to start, the roll being barrelled
            just enough to keep the engine running throughout.

            Half roll off loop

            Speed should be 320-350 m.p.h. I.A.S.

            Upward roll

            Speed should be 350-400 m.p.h. I.A.S.

            Flick manoeuvres

            Flick manoeuvres are not permitted.

  F.S/6