jeffry747
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DC-8 Landing Gear Doors Open On Ground. Why?

Tue Apr 17, 2007 8:50 am

I have always noticed that when after a DC-8 (UPS DC-8s in particular) blocks in and shuts down after a flight, the first thing Mx on the ground will do is walk under the aircraft and pop open the main landing gear doors. It is occasionally done on 727s but ALWAYS on the DC-8. The doors will then be left open until the aircraft is started up for its next flight. Why is this done?
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fr8mech
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Tue Apr 17, 2007 9:15 am

Because there is no way to look in the wheel well with the doors closed. The B727 & the DC8 maintenance program (as UPS operates the aircraft) require that maintenance check certain items in the wheel well after each flight where ground time is in excess of 2 hours. You can easily see into the wheel wells of B727 aircraft. Some will open the doors to check and service the APU oil (on a B727).
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HAWK21M
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Tue Apr 17, 2007 5:07 pm

To Facilitate Maintenance Inspections as per Schedule.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
Steve332
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Tue Apr 17, 2007 11:16 pm

I done my school work experiance programme at DUB with EI's 330's. We done the same thing and also opened the main gear doors for a daily inspection.
 
SFOMB67
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Wed Apr 18, 2007 2:34 pm

[quote=Jeffry747,reply=0]The doors will then be left open until the aircraft is started up for its next flight.

Been awhile since I've shut these doors. They can really have a nasty snap if you release the (door release/closure) handle too fast!
Not as easy as originally perceived
 
747400sp
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Thu Apr 19, 2007 12:51 pm

Quoting Fr8mech (Reply 1):
Because there is no way to look in the wheel well with the doors closed. The B727 & the DC8 maintenance program (as UPS operates the aircraft) require that maintenance check certain items in the wheel well after each flight where ground time is in excess of 2 hours. You can easily see into the wheel wells of B727 aircraft. Some will open the doors to check and service the APU oil (on a B727).

Do have to do these maintenance check inj the wheel well of 707s?
 
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HAWK21M
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Thu Apr 19, 2007 3:27 pm

Quoting 747400sp (Reply 5):
Do have to do these maintenance check inj the wheel well of 707s

It depends on the Scheduled check due.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
fr8mech
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Thu Apr 19, 2007 6:14 pm

Quoting 747400sp (Reply 5):
Do have to do these maintenance check inj the wheel well of 707s?

Don't know. The only thing I ever did was service engine oils on B707 aircraft.

Unless something needs servicing, the only thing being done on a DC8 is visual inspection of the various hydraulic components installed in the wheel wells.
When seconds count...the police are minutes away.
 
MD11Engineer
Posts: 13916
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RE: DC-8 Landing Gear Doors Open On Ground. Why?

Thu Apr 19, 2007 7:38 pm

Quoting Fr8Mech (Reply 7):
Quoting 747400sp (Reply 5):
Do have to do these maintenance check inj the wheel well of 707s?

Don't know. The only thing I ever did was service engine oils on B707 aircraft.

Unless something needs servicing, the only thing being done on a DC8 is visual inspection of the various hydraulic components installed in the wheel wells.

On the 727 on turnarounds we just lookeed into the wheel well with closed doors, but on weekend checks we had to check the precharge pressure on the brake accumulator and APU oil. For this you'll have to open the L/H main wheel well door.

The 707 has a higher landing gear than the 727. I would need to open the wheel well door on this plane to have a good look. The mechanism for opening and closing the main wheel well doors is the same as on the 727.

Jan
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113312
Posts: 595
Joined: Sat Apr 16, 2005 9:09 am

RE: DC-8 Landing Gear Doors Open On Ground. Why?

Fri Apr 20, 2007 5:18 pm

On the DC8, you inspect hydraulic reservoir and accumulators. On the727, unless maintenance or inspection is required, nearly everything that needs to be seen for preflight can be viewed with the doors closed. However, APU cooling during warm weather can be improved with the right main gear door opened.

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