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NEW YORK AIRWAYS 6.3.6 ENGAGING ROTORS - Continued 1. Throttle -- 1000 rpm. Set friction. 2. Collective pitch -- Down and locked 3. Cyclic stick and directional pedals -- Neutral. 4. Friction clutch switch -- Engage. CAUTION: Needles must be synchronized before engaging the jaw clutch. 5. Jaw clutch switch -- Jaw (until light goes off) NOTE: There is no time restriction on running the engine with the rotors disengaged; however, the engine should be running smoothly and engine oil temperature should read 40° C prior to engagement. 7. Transmission oil pressure gages -- Check. (If no pressure, shutdown and determine causes). 8. Hydraulic boost valve lever -- Boost on. (Check pressure at 1000 psi. Operate the hydraulic flight controls for proper response). 9. Auxiliary power unit -- Disconnected. 10. Master and battery switches -- On. 11. Radio switches -- On. CAUTION: Allow a minimum warm-up before depressing transmitting switch (UHF radio) to prevent damage to transmitter. 12. Voltmeter -- Check (28.5 volts above 2000 engine rpm). NOTE: Generator warning light will not go off until 1250 engine rpm, at which time the reverse current relay cuts in. 13. Generator switch -- Off. 14. Battery switch -- Emerg. Functionality check proper operation of emergency electrical equipment. A check of fuel quantity gage will indicate system is operating properly. 15. Generator switch -- On. 16. Battery switch -- Return to on. 17. Carburetor air temperature gage -- Check with limits. 18. Ignition system -- Check magnetos -- 25 inches Hg at 2300 engine rpm. a. Ignition switch -- "L". Observe rpm drop. b. Ignition switch -- BOTH Stabilize rpm. c. Ignition switch -- "R" Observe rpm drop d. Ignition switch -- BOTH A drop of 50 to 75 rpm is normal while a maximum drop of 100 rpm is permissible on one magnet o providing there is no engine roughness. 19. Transmission oil temperature gages -- Check within limits. 20. Transmission oil pressure gages -- Check within limits. 21. Overrunning clutch check: a. Throttle -- 2500 engine rpm. b. Collective pitch lever -- Down. c. Throttle - retard; sufficiently to desynchronize (split) the tachometer needles. 57 Revised Issue J.E.G. L.G.C. Date 1 April 1959
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