What is LR and ER?


What is LR and ER? In fiber optic communications, SR LR LRM ER and ZR are terms that stand for 10g modules transmission distance. SR means short range, LR means long range, LRM means long reach multimode , ER means extened range and ZR means ze best range.


Is the 777 200ER old?

The original 777-200 model first entered service in 1995, followed by the extended-range 777-200ER in 1997.


Is 777 better than 350?

A similar range for the 777-9 and A350-1000 Both aircraft offer a range suitable for the longest standard long-haul flights. The A350-1000 does beat the 777-9 here, however, with a range of 7,992 NM (14,800 km). The 777-9 offers slightly less at 7,290 NM (13,500 km).


Why is 777 so special?

“The Boeing 777's unique combination of superior range, outstanding fuel efficiency and passenger-preferred comfort has created long-range success for carriers around the world. And the 777-300ER now gives operators a perfect opportunity to extend that success.


How can you tell the difference between a 777-300 and a 777-300ER?

The 777-300ER (ER for Extended Range) is the B-market version of the 777-300. It features raked and extended wingtips, a new main landing gear, reinforced nose gear, and extra fuel tanks. The -300ER also has a strengthened fuselage, wings, empennage (tail assembly), and engine attachments.


Why is Boeing always 7?

So the first commercial passenger airline in the series was assigned the number 707 (pronounced Seven Oh Seven). The Boeing 707 is credited with launching the beginning the “Jet Age.” It was decided that all model numbers that either began or ended in a “7” would be reserved for commercial jets.


Why is 777 so expensive?

What makes the plane so expensive? The 777-300ER can carry 365 passengers compared with the 787-9's capacity of 280. The GE engines on the 777 model develop 62% more thrust than the 787's two engines. The plane is also longer than the Dreamliner, has a greater wingspan and a greater wing area, and is taller.