aerlingus330
Posts: 812
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Boeing 747SR?

Tue Aug 16, 2005 6:54 am

Hi,
I havent really heard of the Boeing 747SR, I thought it was a 747SP, but after looking at it. I discovered that it looks more like a 747-200 because of the short upper deck and the overall length.

So, is it a 747-200 or was it a seperate devolipment?
If so, How does it differ from the 747-200?


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AerLingus330
Aer Lingus Airbus A330-300
 
spacecadet
Posts: 2830
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:05 am

The SR stands for short range. I believe all of the 747SR's are based on the 100 series 747. (JAL's are I believe 747-81's, ANA's are I think 747-121's, and those were the only two airlines that ordered them.)

They differ from standard 747's in that they have smaller fuel tanks and more seats, as well as a strengthened undercarriage for high cycle operation.
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Alessandro
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:06 am

Space, a few B743 where built as -SR.
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BA
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:10 am

The 747-400 variant for the SR is also available and is called the 747-400D (D for Domestic).

JAL has many of them.

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FrancoBlanco
Posts: 382
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:10 am

The thing is only the "first generation" SR was simply called 747SR (like the 747SP). In the eighties there was also a short range version of the -300 but it was called 747-300SR (AFAIK only three of those were built and all of them were converted to regular -300s later).
The short range version of the -400 is called 747-400D (for Domestic flights [within Japan]).

Sebastian
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irelayer
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:11 am

Quoting Alessandro (Reply 2):
Space, a few B743 where built as -SR.

And don't forget the 747-400D (D = domestic) which is the same concept...and also purpose built for Japanese aviation. No-winglets, small fuel tanks, all economy, and strengthened undercarraige. Also, still the highest capacity commercial airliner in the world, until A380 EIS.

-IR
 
whitehatter
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:12 am

The SR was built specifically with the Japanese carriers in mind, and their short routes between cities for domestic travellers. Some of the freight haulers have bought them second hand due to the robust design.

The 744 also has a similar variant, the 747-400D. Notable because of the lack of winglets but these can be fitted if needed.
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gg190
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:15 am

Would the engines need to be modified to cope with high cycles?
 
Lufthansa747
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:28 am

JAL has had

B747SR-46
B747-146B/SR
B747-146B/SR/SUD, looks like a 743
B747-446D

ANA

B747SR-81
B747-481D

B747SRs were the olny very early models, 146B/SR came later, followed by the 146B/SR/SUD and 744D.
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aerlingus330
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RE: Boeing 747SR?

Tue Aug 16, 2005 7:55 am

Thanks for your quick replies guys...Thats cleared it up for me  Smile

AerLingus330
Aer Lingus Airbus A330-300
 
spacecadet
Posts: 2830
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RE: Boeing 747SR?

Wed Aug 17, 2005 1:04 am

The thing is only the "first generation" SR was simply called 747SR (like the 747SP).

Yeah, I admit my carrier designations were off a bit, but some people are calling the 747-400D an "SR" and that's just not correct at all. You are correct in that only the earliest series actually carried the SR designation from Boeing. This was an official designation, it's not colloquial, so it's not correct to call a 400D an SR model. Only 747-100's carried that designation.

Note also that Boeing offered this option to whoever wanted it. It wasn't specifically for ANA and JAL. They were the only two airlines who picked it up, though.

Would the engines need to be modified to cope with high cycles?

The engines were not modified.

ANA and JAL both still fly short range 747's but I believe JAL has retired all of their "SR" models at this point. ANA I think still flies a few. Most were replaced with 400D's and even the 400D's are now being replaced with 777's, which apparently are basically unmodified.
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GDB
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RE: Boeing 747SR?

Wed Aug 17, 2005 1:34 am

The initial Domestic 747's, called SR's, entered service around 1973, the Boeing SR demonstrator even had '747 Super Airbus' painted on the side in 1972, (won't see that again).

The SR-100 differed from the standard 747's by having strengthened fin attachments, crown splices over the centre body undercarriage supports, stabilizer roots, fin roots, wing lower surfaces, wing/body splice, in-spar ribs, spoilers, ailerons and trailing edge flap supports.
A well as upgraded middle and rear spars, leading edge and nacelle support structures.

Original config was 498, later 523-528 pax.
The later 747-300SR's for JAL held up to 645.

The original 747-100SR's had de-rated JT9D-7's of 43500lbs.

Later, ANA ordered it'sown variants, called 747SR-100B, then JAL had 3 similar ones but called them 747-100B(SR).
The ANA examples had 46500lbs CF-645A engines.

Then JAL ordered 2 -300 versions, but called them 747-100B(SR/SUD), these had 54,000lbs JT9D-7RG2 engines.

From 1991, 747-400D versions appeared, for JAL and ANA, though hoped for sales to India and US domestic carriers never happened.

The JAL 747 lost 20 years ago was a SR, the third built, after a botched repair carried out by Boeing after a 1978 tail strike failed.

Take a good look at those pax capacities of this interesting 747 variant, before wondering (again) if airports can handle A380s!
 
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yyz717
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RE: Boeing 747SR?

Wed Aug 17, 2005 1:38 am

The 400D is actually retrofitable back to the full 400 standard. While the original SR was a purpose-built short range derivative.

While JAL and ANA were the only carriers that ordered the type, PIA was touted as a possible 3rd customer in the late 70's but an order never came thru.
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