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What exactly is the difference between a B777-31H and B777-31H(ER)? Is ER the latest version of 777-31H?

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    $\begingroup$ ER stands for extended range, which means added tanks and reinforcing the rest of the craft to hold all the fuel $\endgroup$ Commented Oct 27, 2014 at 11:06
  • $\begingroup$ and potentially weight savings elsewhere $\endgroup$
    – jwenting
    Commented Oct 27, 2014 at 12:23

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The 777-31H is a standard Boeing 777-300 manufactured for Emirates (customer code 1H).

The 777-31H(ER) is a Boeing 777-300ER (Extended Range) again for Emirates.

Compared to the standard 777-300, the 777-300ER has:

  • A longer range due to the extra fuel it can carry (145538 kg compared to 135880 kg for the -300 baseline)
  • A higher Operating Empty Weight (167829 kg compared to 159570 kg for the -300 baseline)
  • A higher Maximum Take-Off Weight (351535 kg compared to 299370 kg for the -300 baseline)
  • A higher maximum structural payload weight (69853 kg compared to 64960 kg for the -300 baseline)
  • A wider wingspan (64.80 compared to 60.93 m)
  • A different engine delivering more thrust

The Boeing 777-300ER is always equipped with General Electric GE90-115BL1 engines, while the baseline -300 can be ordered with four different engine models from General Electric, Pratt& Whitney or Rolls Royce. The Emirates Boeing 777-300 aircraft have the Rolls Royce RR Trent 892 engines installed. They deliver 415 kN of thrust, almost 100 kN less than the GE90-115BL1 engines.

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B777-31H(ER) can fly further than B777-31H.

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    $\begingroup$ welcome to Aviation.se. While your answer is correct, it lacks detail, could you please edit your post to add more information? $\endgroup$
    – Federico
    Commented Jun 5, 2016 at 11:48

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