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                   PART 1V-EMERGENCY HANDLING

     92.  Controlled descent through cloud with an unserviceable A.S.I.

     (a)  A guide to making a safe descent without an A.S.I. is given
          below:-

Condition of flight Settings Speed attained (knots)
Fast rate of descent 11,000 r.p.m.
Airbrakes OUT
3,500 ft./min. on
V.S.I.
230±10
Slow rate of descent 11,000 r.p.m.
Airbrakes OUT
1/3 flap
1,000 ft./min. on
V.S.I.
170±10
Level flight at 1,500 ft. 11,000 r.p.m.
Airbrakes IN
1/3 flap
170±10
Final descent 11,000 r.p.m.
Airbrakes OUT
Undercarriage down
2/3 flap
700 ft./min. on
V.S.I.
135±10

93. Abandoning the aircraft in flight (a) Reduce speed as much as possible, then check:- Throttle(s) Closed Seat Fully lowered Gunsight Lowered Harness Tight and locked Helmet Strap fastened and tight Hood Jettison Then: Lead Disconnected and stowed Harness Released Airbrakes IN (this is essential) (b) (i) Abandon the aircraft by diving over the inboard trailing edge of the wing.

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