Alitalia744
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747-100/200 Staircase?

Fri Jul 23, 2010 1:54 pm

Were there any 747/742/74B aircraft that did not feature a spiral staircase, but rather had a straight stairwell similar to the 743/744 aircraft?

I can't find any info on it but vaguely remember a UAL seat map that featured some 742s with a straight-in staircase.
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isitsafenow
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RE: 747-100/200 Staircase?

Fri Jul 23, 2010 2:07 pm

On the Boeing tour a couple of decades back, it was explained that the staricase in the -400 replaced the spiral of past.
It was larger and safer for the pax to use.
I would guess if an -100 or- 200 had a non spiral staircase, it was installed a few years after the aircraft was manufactured to update/replace the spiral.

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alitaliadc10
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RE: 747-100/200 Staircase?

Fri Jul 23, 2010 2:22 pm

I remember flying Air NZ's 742s and they did not have a spiral case - it was kinda straight then had a little podium before turning back...

hard to explain - maybe check the pics here on a.net...
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longhauler
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RE: 747-100/200 Staircase?

Fri Jul 23, 2010 2:41 pm

The "tradional" sprial staircase on the B747-100/200s looked like this:


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Photo © Dave Mills



And was located between the forward doors at the aft of the forward cabin.

Then towards the end of the run of the -200s a slightly different staircase was installed, in the same position. It was more like AlitaliaDC10 above describes. It was straight, with a small landing, then right angled the rest of the way. The only picture on here I could find of it doesn't show it well, but you get the idea.


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Photo © Sam Chui



I don't know if any existing -100/200s had their sprial staircase refitted to this one.
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FI642
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RE: 747-100/200 Staircase?

Fri Jul 23, 2010 2:53 pm

Braniff had straight stairs on their -200's. NW ended up with I believe three of them.
I was never a fan of those tight spiral stairs. Try climbing them in rough air!
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kc135topboom
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RE: 747-100/200 Staircase?

Fri Jul 23, 2010 3:46 pm

Quoting longhauler (Reply 3):
I don't know if any existing -100/200s had their sprial staircase refitted to this one.

I seem to recall when the B-747-121 TW-800 went down, in the mid 1990s she had gotten rid of her sprial starcase long before that tragidy.
 
Viscount724
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RE: 747-100/200 Staircase?

Fri Jul 23, 2010 10:22 pm

Quoting longhauler (Reply 3):
Then towards the end of the run of the -200s a slightly different staircase was installed, in the same position. It was more like AlitaliaDC10 above describes. It was straight, with a small landing, then right angled the rest of the way. The only picture on here I could find of it doesn't show it well, but you get the idea.

Better photo of that type of right-angle stairs on a PIA 747-200.

 
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Starlionblue
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RE: 747-100/200 Staircase?

Sat Jul 24, 2010 12:14 am

What about the SUD mods on the 100/200?
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LHRBFSTrident
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RE: 747-100/200 Staircase?

Sat Jul 24, 2010 5:44 pm

Quoting longhauler (Reply 3):
Then towards the end of the run of the -200s a slightly different staircase was installed, in the same position

I don't have a source but I always believed it was a customer option - and IIRC South African Airways opted for the straight staircase on their -200Bs (and possibly on their -SPs)

- and now having searched the database, I can only find photos of spiral stairs, but I am sure I have a 1980s SAA/SAL timetable showing a seatmap with a straight staircase somewhere...
 
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747classic
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RE: 747-100/200 Staircase?

Sun Jul 25, 2010 3:47 pm

Quoting Starlionblue (Reply 7):
What about the SUD mods on the 100/200?



After the SUD mod of the 12x 747-200B aircraft (10x KLM and 2X UTA) the normal straight 743/744 stairs was installed.


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Photo © Vidar Giljebrekke



SUD mod of the 747-100 was offered, but has never been performed.
The two produced JAL 747-146B/SR/SUD aircraft were brand new from Everett and not modified 747-146SR aircraft.
As shown below, both had also the straight 743/744 stairs installed.


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Photo © Sam Chui

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