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What Is The Difference Between LR And ER?  
User currently offlineJohn From United States of America, joined Sep 1999, 1374 posts, RR: 5
Posted (14 years 5 months 3 days 23 hours ago) and read 2637 times:

Does the term LR mean "ultra" long range, and ER, just a standard extended range, for example, the 767-200/300ER? Can someone clarify this for me, or have I already answered my own question? Appreciate any replies from the experts, thx.

1 replies: All unread, jump to last
 
User currently offlineJet Setter From , joined Dec 1969, posts, RR:
Reply 1, posted (14 years 5 months 3 days 22 hours ago) and read 2597 times:

John,
You're talking about the 777-200ER and 777-200LR, right? ER and LR are just two ways of saying the same thing. The original 777s were the 777-200A and 777-200B, when built they became the 777-200 and 777-200ER. When Boeing came to designate the 777X, they could use the 777-300ER because they hadn't already used it, but had to come up with something else for the 777-200X and so they decided to call it the 777-200LR.

Embraer also did this with the ERJ-145, there is the ERJ-145ER and the longer range ERJ-145LR - maybe Boeing copied them ?!?!?!?

Hope that helped
James 


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