Pilot's instructions - autopilot mk viii

Pilot's instructions - autopilot mk viii

RAF Form 2750

Pilot's notes for use of autopilot. Gives drills for before and after take off, engaging autopilot and before landing. Includes important notes. actions in event of engine failure and reporting defects. On reverse are operational points and actions in event of D.R. compass failure and emergencies.

Printed folding booklet

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MRosserLV745193-190517-04

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OPERATIONAL POINTS

Kicking on Engagement of Auto-pilot

If an appreciable kick on elevator control occurs on engagement, report to maintenance staff, who can eliminate this by valve adjustment with subsequent air test.

LATERAL LEVEL
If aircraft does not fly level after engagement, adjust with manual rudder trim:-
Left wing low, trim on [italics] left [/italics] rudder.
Right wing low, trim on [italics] right [/italics] rudder.
N.B. Do not use aileron trim – It will NOT help.

COURSE CHANGING
Small changes are made by resetting the pointer of the pilot's repeater; larger ones by turning the control switch to "Jink" and setting pointer. On larger turns control switch must be returned to "Compass" 15 degrees before new course is reached.
On all fast turns pitch control must be used to keep the nose up.

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In the Event of Failure of D.R. COMPASS

Action:
(1) Switch off D.R. Compass.
(2) Align pointer with lubber-line and put control switch to "Off."

To Turn:
(1) Alter pointer 10 degrees in required direction.
(2) Place control switch to "Compass."
(3) Turn switch "Off" and re-align pointer when new heading is reached.

EMERGENCY
The clutch lever mechanically disconnects flying controls from A/P. Use it only if control cock does not help you.

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[inserted] F/L ROSSER [/inserted]

PILOT'S INSTRUCTIONS

AUTOPILOT
Mk VIII

R.A.F. FORM 2750.

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BEFORE TAKE-OFF
(1) Ensure clutch lever is "IN" and move control column to fullest extent in all directions to ensure clutches engaged.
(2) Put control cock to "SPIN."
(3) With control cock "SPIN" check pressure while running up engines. It should be between 55 and 65 p.s.i.
(4) Switch D.R. Compass on.

AFTER TAKE-OFF
(1) Control cock [italics] must [/italics] be in "SPIN" position at least five minutes before autopilot is engaged.
(2) Check pressure.
(3) Ensure compass control switch is "OFF."

TO ENGAGE AUTOPILOT
(1) Trim for level flight.
(2) Set pitch control for required attitude.
(3) Lock rudder, where rudder lock is fitted.
(4) Set pilot's repeater pointer on lubber line.
(5) Set control switch to "Compass."
(6) Set control cock to "IN."
(7) Feel controls to ensure that engagement has taken place.

BEFORE LANDING
(1) Set control switch to "OFF."
(2) Set control cock to "SPIN."

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IMPORTANT
(1) [italics] Manual trimmer should only be used:-
(a) Rudder to correct lateral level.
(b) Elevator to maintain correct fore and aft trim, using trimmer to keep combined pressure gauge pointer oscillating equally in both red and green.
(2) To change pitch attitude use Autopilot pitch control, NOT the manual trimmer.
(3) Control cock MUST remain in "Spin" position for five minutes prior to engagement.
(4) Clutch engagement must be checked before take-off, and clutches must not be disengaged during flight except in an emergency.
(5) Pilot must not leave his seat, except to hand over to another pilot.
(6) Disengage if pressure falls below 45 p.s.i. [/italics]

IN THE EVENT OF ENGINE FAILURE
(1) Put control cock to "SPIN."
(2) Feather prop of useless engine.
(3) If compressor is on faulty engine it is probable that autopilot cannot be used, unless circumstances permit windmilling prop when 50 p.s.i. pressure should be maintained.
(4) Trim on sufficient rudder to check swing, assisting rudder by foot if trim is insufficient and re-engage autopilot, gradually easing off foot pressure.

DEFECTS
NOTE:- Report [italics] in detail [/italics] to ground staff all "George" defects, no matter how small. Give ground staff an accurate account of erratic or unsatisfactory performance and encourage them to make air tests with you.

"GEORGE" is for YOUR use – KNOW how to use him!

P.T.O.