SAA-SAL From Belgium, joined Nov 2000, 356 posts, RR: 2
Reply 1, posted (12 years 5 months 1 week 6 days 3 hours ago) and read 3924 times:
345 and 342 are easy to tell apart : 345 big engines but shorter than 346
342 small engines. 343 and 342 are harder to tell apart : count the number of windows just aft of the first fuselage door. 342 has 3 or 4 windows and then a space. 343 has about 6 or 7 windows and then a space. That's the way I tell them apart from each other.
As goes for B744 and B744ER I think it's a bit harder. I guess there should be a difference in the front gear strut given that the B744ER is heavier and has been strengthened. Cargolux have ruled out the B744ER because they say the front gear it too different compared to the B744's front gear.
Aussie747 From Australia, joined Aug 2003, 1169 posts, RR: 0
Reply 2, posted (12 years 5 months 1 week 6 days ago) and read 3721 times:
Some excerpts from Boeing Article state the main diffeences are
To support the additional weight (35,000 pounds), the new model has strengthened parts in its wings, fuselage and landing gear.
Although the 747-400ER has an identical exterior appearance to existing 747-400 airplane, the flight deck features new liquid crystal displays and reduced noise levels, and the structure features a strengthened fuselage, landing gear and parts of its wing, along with new, larger tires.
The landing gear has been strengthened to support the 747-400ER's increased gross takeoff weight of 910,000 pounds (412,770 kilograms). New, slightly larger radial tires have been added as well.
Cedarjet From United Kingdom, joined May 1999, 8557 posts, RR: 53
Reply 3, posted (12 years 5 months 1 week 5 days 23 hours ago) and read 3657 times:
You can tell a Qantas 744ER (they're the only customer I think) - the recognition should follow the question, "Since when did Qantas have GE-powered 747s?" The normal fleet are powered by easy-to-spot Rollers.
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz
Na From Germany, joined Dec 1999, 11491 posts, RR: 9
Reply 4, posted (12 years 5 months 1 week 5 days 22 hours ago) and read 3532 times:
its not that easy as Qantas also has 3 secondhand GE-powered 744s in its fleet since 1998.
I´m a 747 fan and I can´t tell a 744ER apart from a normal 744 from the outside. That is also the case with 744Fs/744ERFs. They look the same.
The only difference aside the engine issue on QF aircraft is that the ERs miss the front underbelly antenna. But that is the case with all 744s built since a year or so.
Star_world From Ireland, joined Jun 2001, 1234 posts, RR: 0
Reply 7, posted (12 years 5 months 1 week 5 days 17 hours ago) and read 3308 times:
By the way, regarding the A345 - it's certainly easy to tell apart from the 342 as (besides the engine difference already mentioned) it's longer than both the 342 and 343 - 6 frames longer than the 343, I believe.