Boeing B717 technical question
What is that inside the green circle on the B717 MLG door please?
https://cimg1.ibsrv.net/gimg/pprune....134a552ce8.jpg Regards Ed |
Looks like a rubbing strip so if the gear doors are not closed they will touch the runway and the strip will wear away rather than damage the doors.
It was like that on the BAC 1-11 and if the gear had been lowered by "Free Fall" the doors stayed open. Same era and similar design. (DC-9 and BAC 1-11) |
Thank you for your reply dixi118. What you said makes sense to me.
Regards Ed |
Was fitted to the Mad Dog. There to prevent damage to the doors when lowering gear on the emergency system. Amazing what you can remember from 30 years ago.
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You are quite correct
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Thank you guys for your help.
Regards Ed |
Later there was a mod to permit retraction. I recall one incident, alternate extension, door separated on touchdown, down the gullet, and a very expensive exercise overall ....
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Can’t remember the name of the material that bumper is made of, but recall being instructed to avoid touching it on the exterior preflight due to skin toxicity. Guess rubber wasn’t good enough!
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Nothing to add, but that’s a very clean airplane!
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Gear door
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Speaking of 717 tech issues, see the Twitter link in this article:
https://www.aerotime.aero/articles/v...7-leaking-fuel |
Originally Posted by HOVIS
(Post 11402599)
On the BAC 1-11 that was how you serviced the hydraulic reservoirs and brake system accumulators. I only worked on MD80s briefly so no idea if the architecture is the same.
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Originally Posted by bafanguy
(Post 11402614)
Speaking of 717 tech issues, see the Twitter link in this article:
https://www.aerotime.aero/articles/v...7-leaking-fuel Wonder if this incident was similar with incorrect use of transfer pumps. |
Originally Posted by john_tullamarine
(Post 11399317)
Later there was a mod to permit retraction.
Why would alternate extension be used if there was hydraulic pressure available to close the door? A long time since I worked on MD-95 or MD-80 so may be forgetting some details. |
It’s been a while, but from memory, after an alternate extension, you had to reset the alternate extension handle to get hydraulic pressure available to close the doors.
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So much like the BAC 1-11. I wonder if the designers had lunch together?
With the 1-11's gear doors open there were locks to fit on the jacks to prevent them closing when you were working in the wheel well. I heard of one or two incidents when locks hadn't been fitted. |
Originally Posted by john_tullamarine
(Post 11399317)
Later there was a mod to permit retraction.
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Thank you again for your knowledge guys.
I have another question. Do you know what the angle is that the reversers tilt inboard please? https://cimg4.ibsrv.net/gimg/pprune....16df3e0581.jpg |
Originally Posted by edetroit
(Post 11405473)
I have another question. Do you know what the angle is that the reversers tilt inboard please?
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