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ESP; why cond lever first?


usafabird02
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Seems to me that it was changed to the condition first for that very reason, to mechanically close the valves and shut down the engine first. Also, if there was no need to extinguish a fire or fire the fire bottles then leave the T-handle alone. Why leave the situation open where the T-handle has been pulled for, say a fluid leak, before the condition lever, and have it so an inadvertent brush against the fire bottle switch would fire the bottle.

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The condition lever mechanically shuts of fuel at the Geneva Lock (actually below it, inside the fuel control) the "T" handle electrically activates the Geneva Lock which closes the same valve. The "T" handle also closes the firewall fuel shutoff valve. The Normal in-flight condition would be the Cruise Engine Shutdown which uses the condition lever.

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When we discuss the Fire Handle, T Handle, E Handle (for all you OLD Navy P3 guys, Victor) we focus on the Engine and forget the Prop...

The condition lever mechanically positions the Feather Valve to feather the Prop as well as mechanically closes the Fuel Control Shutoff Valve (prior to the blade angle increase commanded by feather) to shutdown the engine.

The Fire Handle will ONLY electrically do this and thus is second... In addition if the prop does not feather (due to loss of fluid) and you pull the fire handle first you would shutoff oil to the RGB and engine and only hope the oil shutoff valve OPENS when you reset the fire handle...

Also if you shutdown for a fire and pull the fire handle first and the prop does not feather you would have to reset a fire handle to restore oil on an engine that may be on fire or.......

Strange seem to remember a time when I started the engines and then PULLED the OIL CBers.....

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That would be the same knuckleheads that put a picture of a headset into the -23 job guides, in case the comm/nav tech with the headset forgets what a headset looks like.

Or the same knuckleheads that require pulling circuit breakers, putting danger tags on them, red X-ing the aircraft, just to change an LRU.

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