Powerbacks
Join Date: Oct 2003
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We've tried ourselves on a test flight on a 737/200.
and It was possible of course.
On the Mid 80's a well known Central American Airline
approaching the US over the Gulf of Mexico Had both cfm56 flamed out due to a water ingestion (boeing said it was a nacelle design problem)
They glided the 737-300 and they were lucky to find a grass field
close to the Leville VORTAC MSY area.
Landed power off....no injuries, and very proud crew.
I will try to find Any web sites.
The Capt. use to be A chief pilot for the airline I was flying for.
and It was possible of course.
On the Mid 80's a well known Central American Airline
approaching the US over the Gulf of Mexico Had both cfm56 flamed out due to a water ingestion (boeing said it was a nacelle design problem)
They glided the 737-300 and they were lucky to find a grass field
close to the Leville VORTAC MSY area.
Landed power off....no injuries, and very proud crew.
I will try to find Any web sites.
The Capt. use to be A chief pilot for the airline I was flying for.
Join Date: Mar 2000
Location: Bothell WA
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boeing said it was a nacelle design problem)
He swung it in, backed it up in reverse pitch and shutdown. The perfect reverse park! Props are for boats!
Join Date: Oct 2000
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Powerback what do you actually mean by Powerback eal401?
Because there have been 2 differeing answers allready described here. Power Off Landing and Reversing Engines on the Ground to manuovre and taxi. Which is it?
I can assume a ATR can be reversed also a Dash8 but one needs to carefull due to the Nosewheel Wiring being affected if the Dash Nosewheel goes thru the 180DEG mark rapidly.
As for B1900 well I have seen people do it in King Airs but its highly not recommended due to F.O.D. Foreign Object Damage of the Engines and Props and high I.T.T.s . In general a High Wing mount Turbo Prop shouldnt have a Problem, but I would never myself attempt it in a B1900. Twin otter is ok. Must have good ground Marshallers or know whats behind you.
Sheep
Because there have been 2 differeing answers allready described here. Power Off Landing and Reversing Engines on the Ground to manuovre and taxi. Which is it?
I can assume a ATR can be reversed also a Dash8 but one needs to carefull due to the Nosewheel Wiring being affected if the Dash Nosewheel goes thru the 180DEG mark rapidly.
As for B1900 well I have seen people do it in King Airs but its highly not recommended due to F.O.D. Foreign Object Damage of the Engines and Props and high I.T.T.s . In general a High Wing mount Turbo Prop shouldnt have a Problem, but I would never myself attempt it in a B1900. Twin otter is ok. Must have good ground Marshallers or know whats behind you.
Sheep
Join Date: Aug 2003
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You can back up in a B-1900, but there is a time limitation for being in reverse (or beta for that matter) to prevent overheating of the oil cooler. It must be designed to have some airflow though it on the ground.
I've also seen Northwest powerback DC-9's from the gate in MSP. (Been on one three times in fact). Kind of neat. First they check if they have normal above idle forward thrust (stopping with brakes while backing is not recommended!) Then they open the clamshells and giver!
(added a paragraph)
I've also seen Northwest powerback DC-9's from the gate in MSP. (Been on one three times in fact). Kind of neat. First they check if they have normal above idle forward thrust (stopping with brakes while backing is not recommended!) Then they open the clamshells and giver!
(added a paragraph)
Paxing All Over The World
The question about 'Power Back', meaning to 'reverse' the a/c has been asked several times in PPRuNe and a search will show them. The answers are expanded on the ones above. That is, high mounted engines are less likely to FOD and props with negative pitch will do the job. Most jets do not do this even if they technically can, due to risk of FOD.
The other key point already mentioned, when moving backwards - keep your feet off the brakes! Close the throttles/pitch to neutral and let her cost to a stop, then brakes, set pitch/throttles and move. If you touch the brakes, she will sit on her @rse and everyone will suggest that you had something to do with it.
In an emergency? In one of the earlier threads, there was a story from a ramp operative in the 1960/70s at LHR. Winter conditions with ice on the apron and a VC-10 arrives. As it closes on terminal and the air bridge - it started to slide forward on the ice. "Big noise from back of VC-10 and it stopped moving forward!"
The other key point already mentioned, when moving backwards - keep your feet off the brakes! Close the throttles/pitch to neutral and let her cost to a stop, then brakes, set pitch/throttles and move. If you touch the brakes, she will sit on her @rse and everyone will suggest that you had something to do with it.
In an emergency? In one of the earlier threads, there was a story from a ramp operative in the 1960/70s at LHR. Winter conditions with ice on the apron and a VC-10 arrives. As it closes on terminal and the air bridge - it started to slide forward on the ice. "Big noise from back of VC-10 and it stopped moving forward!"
