The mammoth task of keeping Boeing 747s flying

In a 2021 special publication on the Boeing 747, Ian Goold describes how when the airliner was introduced into service, the aviation industry had to define new methods to maintain this giant

The Pratt & Whitney (P&W) JT9D high-bypass engines used to power the Boeing 747 for its first UK demonstration flight in January 1970 were started in sequence: “three, four, two, and…”  Alas, number one declined to ignite owing to a lack of fuel pressure at light-up rotation speed; several further attempts produced “only a hot starter motor” according to one person on board that day.

The pr

Become a Premium Member to Read More

This is a premium article and requires an active Key.Aero subscription to view.

I’m an existing member, sign me in!

I don’t have a subscription…

Enjoy the following subscriber only benefits:

  • Unlimited access to all KeyAero content
  • Exclusive in-depth articles and analysis, videos, quizzes added daily
  • A fully searchable archive – boasting hundreds of thousands of pieces of quality aviation content
  • Access to read all our leading aviation magazines online - meaning you can enjoy the likes of FlyPast, Aeroplane Monthly, AirForces Monthly, Combat Aircraft, Aviation News, Airports of the World, PC Pilot and Airliner World - as soon as they leave the editor’s desk.
  • Access on any device- anywhere, anytime
  • Choose from our offers below