PPRuNe Forums - View Single Post - B737NG - PTU + Alternate Flaps System?
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Old 22nd December 2005 | 18:34
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ATRflyer
 
Joined: Nov 2004
Posts: 24
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From: Europe
Talking

Thanks very much for your help and responding so quickly ifleeplanes, appreciate it.

I thought everything was straight forward when the manual mentioned that the standby system can only extend the leading edge devices, but it was the following paragraph out of page 30 of the cockpit companion that really confused me:

Note: PTU control valve closes when the Alternate Flaps Master switch is moved to ARM and the Alternate Flaps control switch is moved to DOWN; this stops PTU operation.

- if you loose B sys hydraulics and flaps are extended (after takeoff), the LEDs can be retracted with PTU pressure using the Alternate Flap system.

- PTU would not be inhibited because the control switch was not moved to DOWN.


I thought the PTU and the Alternate Flap system were two completely different systems or maybe I am just getting confused at the way it is worded?


Joining Ryanair, looking forward to moving onto the 737 and getting plenty hours up. Will miss flying the ATR though, it's a great aircraft and a pleasure to fly.

Thanks again for your help ifleeplanes.

Regards,
Atrflyer
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