John From United States of America, joined Sep 1999, 1374 posts, RR: 5 Posted (14 years 10 months 10 hours ago) and read 2910 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.
Jet Setter From , joined Dec 1969, posts, RR:
Reply 1, posted (14 years 10 months 9 hours ago) and read 2870 times:
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 ?!?!?!?