In Rolls-Royce own words...

535

• Powering over 600 Boeing 757 aircraft around the world, an RB211-535 powered Boeing 757 takes off or lands every 25 seconds.
• 60 per cent of Boeing 757 operators have selected RB211-535 engines.
• RB211-535 engines have logged over 47 million flight hours and almost 20 million cycles of highly reliable service.
• In service with more than 80 operators.s
• The world's most reliable large turbofan.
• 19,000 hours average time to first shop visit.
• Sole Western powerplant available on the Tupolev Tu-204 aircraft.

524

• More than 900 engines in service.
• The RB211-524 fleet has logged nearly 65 million flying hours, and almost 12.5 million flight cycles.
• First engine ever to achieve more than 27,500 hours on-wing
• Selected by some of the world's leading airlines.
• Interchangeable between Boeing 747-400 and Boeing 767-300 (RB211-524H /-T).
• Flexibility of rating selection.
• Lowest life cycle cost of ownership.
• Continuous improvement with Trent technology
• RB211-524G/H upgraded with the Trent HP system gives:
  • Lowest mature fuel burn
  • Best performance retention
  • Lowest maintenance costs
  • Compliance with all current and planned emissions legislation
• Every 34 seconds an RB211-524 powered 747 takes off or lands
• The RB211-524B4 currently operates on the Lockheed L1011 Tristar.

 also, still being sold as a land based turbine. and the starting point for the trent family, which shows no signs of being replaced until at least 50 years after the evolution of the 211. my vote goes with you on this one. a technical and market tour de force.

Yes, your right. Another damn fine reason why this engine platform has been a mainstay of the turbine engine market for so many years and many years to come !

 The RB211 is a true pioneering engine, thank goodness the government rescued it. My vote goes to that too