Moderators: richierich, ua900, PanAm_DC10, hOMSaR
global2 wrote:I have no technical knowledge of this whatsoever but I have to believe there were masks, it would be too confusing in an emergency for some sort of manual system to be hooked up. I am going to guess that what you see in the recessed area of the panel are the typical PSU items like gaspers (vents), flight attendant call button, and reading light switches.. I would also guess the oxygen masks are behind the upper half of the panel.
fr8mech wrote:There are masks. If you look closely at the PSU in the first picture, you’ll see a faint outline of a door. There were 3(?) masks behind the door. The little hole you see, allowed maintenance to access the masks.
fr8mech wrote:Look at the PSU in the upper-right corner of the image. There’s what appears to be a quarter inch or so hole. That’s where a mechanic would insert a tool...a swizzle stick worked just fine...to open the door and access the masks.
Looking at it a little closer, there is another hole, looks like a dimple, just above the first hole. That may be the tool access. Been over 30 years since I had to open one of those, but I assure you, there are masks in those PSU’s.
As I recall, there were also masks that deployed from the centerline ceiling, but that’s a little fuzzy.
I’m not sure what’s under the panel you’re highlighting, but it does not look like mask stowage to me.
Waterbomber2 wrote:fr8mech wrote:Look at the PSU in the upper-right corner of the image. There’s what appears to be a quarter inch or so hole. That’s where a mechanic would insert a tool...a swizzle stick worked just fine...to open the door and access the masks.
Looking at it a little closer, there is another hole, looks like a dimple, just above the first hole. That may be the tool access. Been over 30 years since I had to open one of those, but I assure you, there are masks in those PSU’s.
As I recall, there were also masks that deployed from the centerline ceiling, but that’s a little fuzzy.
I’m not sure what’s under the panel you’re highlighting, but it does not look like mask stowage to me.
I'm not sure either but it looks a lot like a blow out panel.
wernerga3 wrote:global2 wrote:I have no technical knowledge of this whatsoever but I have to believe there were masks, it would be too confusing in an emergency for some sort of manual system to be hooked up. I am going to guess that what you see in the recessed area of the panel are the typical PSU items like gaspers (vents), flight attendant call button, and reading light switches.. I would also guess the oxygen masks are behind the upper half of the panel.
The lights and vents were in the center of the original lounges:
Later when the 200/300 started introducing upper deck seating, they added O2 masks with visible doors in the ceiling.
I know some people have said the lounges were strict about occupancy, and I wonder if it was related to the emergency o2 procedures.
wernerga3 wrote:What's a blow out panel?
fr8mech wrote:wernerga3 wrote:What's a blow out panel?
In this case, it’s a section of the wall panel that is designed to fail in case the area behind it gets pressurized due to some kind of duct leak. It a) provides a visual indication of failure, and b) minimizes the risk of further damage behind the panel.
That said, I’m not sure this is a blow-out panel because it would blow-out into the cabin. My suspicion is that it’s a simple cover used for configuration changes. Pull the cover and add a PSU for additional seating. Just a guess, but it’s the right size and shape.
wernerga3 wrote:global2 wrote:I have no technical knowledge of this whatsoever but I have to believe there were masks, it would be too confusing in an emergency for some sort of manual system to be hooked up. I am going to guess that what you see in the recessed area of the panel are the typical PSU items like gaspers (vents), flight attendant call button, and reading light switches.. I would also guess the oxygen masks are behind the upper half of the panel.
The lights and vents were in the center of the original lounges:
Later when the 200/300 started introducing upper deck seating, they added O2 masks with visible doors in the ceiling.
I know some people have said the lounges were strict about occupancy, and I wonder if it was related to the emergency o2 procedures.
Max Q wrote:wernerga3 wrote:global2 wrote:I have no technical knowledge of this whatsoever but I have to believe there were masks, it would be too confusing in an emergency for some sort of manual system to be hooked up. I am going to guess that what you see in the recessed area of the panel are the typical PSU items like gaspers (vents), flight attendant call button, and reading light switches.. I would also guess the oxygen masks are behind the upper half of the panel.
The lights and vents were in the center of the original lounges:
Later when the 200/300 started introducing upper deck seating, they added O2 masks with visible doors in the ceiling.
I know some people have said the lounges were strict about occupancy, and I wonder if it was related to the emergency o2 procedures.
I think it had more to do with the number of
emergency exits
wernerga3 wrote:Max Q wrote:wernerga3 wrote:
The lights and vents were in the center of the original lounges:
Later when the 200/300 started introducing upper deck seating, they added O2 masks with visible doors in the ceiling.
I know some people have said the lounges were strict about occupancy, and I wonder if it was related to the emergency o2 procedures.
I think it had more to do with the number of
emergency exits
Interesting- In all the safety cards, it says to go downstairs if possible to exit. Only to use the upper deck door if you cannot get downstairs.
http://wahsonline.com/category/safety-cards/
Max Q wrote:wernerga3 wrote:Max Q wrote:
I think it had more to do with the number of
emergency exits
Interesting- In all the safety cards, it says to go downstairs if possible to exit. Only to use the upper deck door if you cannot get downstairs.
http://wahsonline.com/category/safety-cards/
That link is a gem, great stuff
I’d definitely choose to go downstairs If
possible in an evacuation if I was on the 747 upper deck
It’s a five story drop down that slide, best avoided
wernerga3 wrote:Max Q wrote:wernerga3 wrote:
Interesting- In all the safety cards, it says to go downstairs if possible to exit. Only to use the upper deck door if you cannot get downstairs.
http://wahsonline.com/category/safety-cards/
That link is a gem, great stuff
I’d definitely choose to go downstairs If
possible in an evacuation if I was on the 747 upper deck
It’s a five story drop down that slide, best avoided
Yeah one of the early PAA 747 accidents (SFO 72) when they set the take off parameters wrong, clipped the lights, and had to come back to land without hydraulics- many people were very hurt coming out of the upper deck exit- The plane fell back on the rear of the fuselage, so the drop was even steeper! The wind didn't help at all.
fr8mech wrote:
wernerga3 wrote:Yeah one of the early PAA 747 accidents (SFO 72) when they set the take off parameters wrong, clipped the lights, and had to come back to land without hydraulics- many people were very hurt coming out of the upper deck exit- The plane fell back on the rear of the fuselage, so the drop was even steeper! The wind didn't help at all.
Max Q wrote:Thanks for the links, that 747 was repaired at the Pan Am hangar in SFO and placed back in service
wernerga3 wrote:Max Q wrote:Thanks for the links, that 747 was repaired at the Pan Am hangar in SFO and placed back in service
Indeed it was. It took about 36 hours to get the plane off the runway and into the Superbay which at that time was 100% occupied by American Airlines. There was a lot of damage, it took months to repair. Both body gears were knocked off the airplane, the horizontal stabilizer had huge gashes in the leading edge all the way through the spars. An iron "L" beam off the approach lights had come up through the cargo pit and cabin floor and stabbed right through several seat backs in the "D" cabin center rows. Luckily no one was sitting there.
Here are the pics when it went into the hangar:
wernerga3 wrote:fr8mech wrote:wernerga3 wrote:What's a blow out panel?
In this case, it’s a section of the wall panel that is designed to fail in case the area behind it gets pressurized due to some kind of duct leak. It a) provides a visual indication of failure, and b) minimizes the risk of further damage behind the panel.
That said, I’m not sure this is a blow-out panel because it would blow-out into the cabin. My suspicion is that it’s a simple cover used for configuration changes. Pull the cover and add a PSU for additional seating. Just a guess, but it’s the right size and shape.
Yeah I think its a dead panel for adding additional lights/masks. Look on the other side of the United (200) deck and see there is an additional one where the dead panel is on the opposite wall. These are United promo photos from when they introduced the new upper deck lounge design on their new 200.
The original United 100 upper deck lounge was the relatively barren "red carpet room" with 8 swivel chairs
millionsofmiles wrote:wernerga3 wrote:fr8mech wrote:
In this case, it’s a section of the wall panel that is designed to fail in case the area behind it gets pressurized due to some kind of duct leak. It a) provides a visual indication of failure, and b) minimizes the risk of further damage behind the panel.
That said, I’m not sure this is a blow-out panel because it would blow-out into the cabin. My suspicion is that it’s a simple cover used for configuration changes. Pull the cover and add a PSU for additional seating. Just a guess, but it’s the right size and shape.
Yeah I think its a dead panel for adding additional lights/masks. Look on the other side of the United (200) deck and see there is an additional one where the dead panel is on the opposite wall. These are United promo photos from when they introduced the new upper deck lounge design on their new 200.
The original United 100 upper deck lounge was the relatively barren "red carpet room" with 8 swivel chairs
United did not receive 747-200s until the late 80s when they purchased two -222s specifically for JFK-NRT.
As explained in my response to your Pan Am post, United was one of the original 747-100 customers who had their -122s retrofitted with the internally extended upper deck and the full set of 10 windows on each side. The “-200” you refer to is a -100. By the time United purchased the -200 from Boeing, there was revenue seating upstairs.
