Backup for dropping the gear

"d b" wrote in message
ink.net...

You should know all the systems, and the what-if scenarios that go with
them. This includes the mechanical systems. Like how the cables and
pushrods are run through the plane.

Reminds me of a story about the Aztec, on which I did my inital MEP
training.

The procedures go something like this:

To extend the gear, you move the gear selector lever to "down".

In case of failure of the engine-driven hydraulic pump:
1. move the gear selector lever to "down"
2. Extend handle of manual backup pump
3. Pump mumble times to extend gear
4. Stow handle

In case of failure of the hydraulic system
1. move the gear selector lever to "down"
2. actuate the emergency gear extension system
(AFAIR that releases something and the gear drops under gravity)

Not just one backup, but two! But I've only heard of one undercarriage
incident with the aircraft: As the pilot retracted the gear, the gear
selector lever came off in his hand, detaching at a point behind the
panel...

Julian Scarfe