Boeing B717 technical question
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)
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)
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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!
Speaking of 717 tech issues, see the Twitter link in this article:
https://www.aerotime.aero/articles/v...7-leaking-fuel
https://www.aerotime.aero/articles/v...7-leaking-fuel
Speaking of 717 tech issues, see the Twitter link in this article:
https://www.aerotime.aero/articles/v...7-leaking-fuel
https://www.aerotime.aero/articles/v...7-leaking-fuel
Wonder if this incident was similar with incorrect use of transfer pumps.
Closing the main gear door requires hydraulics. The Alt extension mechanically releases the main gear door and the gear which was supported by the door free falls and, hopefully, locks.
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.
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.
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.
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.
Some DC9s of the late 1960s vintage had a means to close the MLG doors following emergency extension (pretty sure I'm remembering this accurately but my DC9 manual is buried in the storage locker): There was a crank below the F/Os flight kit stowage area that when turned (about a zillion times) took up slack in cables attached by clips to the circumference of the MLG doors...and pulled the doors closed.
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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?
I have another question. Do you know what the angle is that the reversers tilt inboard please?
Last edited by edetroit; 20th Mar 2023 at 15:35.