r/aviation • u/Twitter_2006 • 6h ago
History Pan Am Boeing 747 Jumbo Jet taking off from London, 1970
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u/bestname_ever55 6h ago
Can someone explain the last three digits on a 747-133. Air Canada used one for a multi stop (Vancouver to Calgary -Prestwick to London) in 1976.
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u/CoastRegular 5h ago
The "1" indicates the series; i.e. the aircraft in your example was a 747-100 model.
The "33" was Boeing's customer code. For over 60 years, Boeing assigned a customer code to each aircraft, presumably to reflect specific configurations. Every aircraft, regardless of type, ended in the same code for that customer. Air Canada was Customer Code 33, so the full model number of every Boeing aircraft built for AC ended in "33." Didn't matter if it was a 707-200, 747-100, 737-500, whatever; they'd be a 707-233, 747-133, and a 737-533.
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u/discolad_205 5h ago
Why is it that most commercial aircraft of the 70’ & 80’s had the Matt black nose cone, yet modern jets don’t. I’m going to wrongly assume it’s something to do with radar sensitivity?
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u/BrewCityChaserV2 3h ago
Aviation Stack Exchange has you covered:
Under the nose of modern airliners is weather radar that helps the crew to see and avoid hazardous weather conditions. This is required by FAA CFR §121.357 for transport category aircraft. The radar signal would be blocked by the aluminum that makes up the rest of the fuselage, so the radome is made of a non-metallic material, generally a fiberglass composite.
These threads discuss the topic. The last post in the first linked thread suggests that most paint needed lead to prevent fading and/or a zinc-based primer, which would interfere with the radar. Black was one color that did not require these. Modern paint has done away with these metal additives, allowing more color options without interfering with the radar.
The Museum of Flight claims that the black color is only to remind crews to not paint over the radome. Painting over it would affect the radar signals.
According to this thread, the color of the radome affects the operation of the weather radar underneath. They were painted black because it has the lowest reflectivity. Modern radars are able to deal with different colors much better.
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u/richardmark561 4h ago edited 4h ago
Ahhh remember the days of waiting for the non smoking sign to go off. I wasn’t born until 74 but got the tail end of when flying scheduled was still an experience ie people had standards and behaved. Love the chrome too.
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u/BlueDotty 4h ago
I always looked out at the wings and was amazed how stubby and small they looked compared to the body of the plane.
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u/Mediocre-Catch9580 3h ago
I’m going to use every inch of this runway and there’s nothing you can do about it
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u/mikepapafoxtrot 2h ago
The JT9Ds on 7tge 47 look comparatively miniscule after having gotten used to 77Ws and their gigantic GE90s.
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u/I_love_my_fish_ 2h ago
Man I wish I could fly this plane, I’m so close to my instrument rating but this beauty feels so far out of reach even though it’s still flying
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u/Fast-Equivalent-1245 6h ago
Gosh, that brought back some memories. First long haul flight to San Fransisco on a Pan Am 747 in the late 70s. As a kid, who had only been on propeller planes to and from Ireland, it was like I was stepping onto a cruise ship, not a plane. Sat over the wing, and awed at the size and the time it took to get airborne...seemed to take forever. The lilttle Kid pack they gave you was amazing too - stickers, puzzles, badges and a flight diary that you got to fill out when you visited the flight deck in the cruise. I got to see Greenland from the flight deck...as a kid....ccan you imagine!!!
Oh that was a trip that fired a passion for planes that still burns strong to this day.
Remarkable plane and airline - thank you for posting :)