Sleepingsquirrel
Pre-takeoff checklist
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- Mar 6, 2011
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Sleepingsquirrel
Around 1966 or 1967 the flap switch was changed. I have a G model where the flap switch is placed in the down position (switch must be returned to neutral) or the flaps extend fully. You must hold the flap switch in up positon to get the flaps up (it is spring loaded to neutral from the up positon) Is this correct or has someone mistakenly turned the switch upside down?
Pilot Friend info
"C-150 flaps have evolved from the Piper like Johnson bar through various flap switches and indent levers. Be careful, some switches work 'backwards'. The later models of the C-150 have electric flaps with indicators marked in 10 degrees to 40 degrees. There is a flap-shaped switch, which applies power to an electric motor and a worm gear to the flap-actuating rod. Extension takes about nine seconds and airstream assisted retraction takes about five seconds. Any count system used to move flaps should be figured accordingly. The flap indicator works on a cable + pulley system which has variations in accuracy. Different year models of the C-150 and all other models have different modes of switch operation. Be sure to check method of operation before flight and during checkouts."
Thanks!
Pilot Friend info
"C-150 flaps have evolved from the Piper like Johnson bar through various flap switches and indent levers. Be careful, some switches work 'backwards'. The later models of the C-150 have electric flaps with indicators marked in 10 degrees to 40 degrees. There is a flap-shaped switch, which applies power to an electric motor and a worm gear to the flap-actuating rod. Extension takes about nine seconds and airstream assisted retraction takes about five seconds. Any count system used to move flaps should be figured accordingly. The flap indicator works on a cable + pulley system which has variations in accuracy. Different year models of the C-150 and all other models have different modes of switch operation. Be sure to check method of operation before flight and during checkouts."
Thanks!
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