Boeing727 From United States of America, joined May 1999, 956 posts, RR: 0
Reply 1, posted (15 years 8 months 2 weeks 3 days 8 hours ago) and read 825 times:
The sole purpose was to transport engines (normally within the airline) to another airport where it was needed for maintenance. So instead of chartering a cargo airplane to do this, a few airlines have transported extra engines (not very common though) on their own airplanes; I can't think of anybody still doing this today.
DC-10 From , joined Dec 1969, posts, RR:
Reply 2, posted (15 years 8 months 2 weeks 2 days 4 hours ago) and read 825 times:
Then engine, which is situated under the wing between the #2 engine and fuselage is being ferried for repairs...The alternative to that is taking the engine with the bad engine and flying that aircraft with the 3 functional engines.
Cedarjet From United Kingdom, joined May 1999, 8245 posts, RR: 54
Reply 3, posted (15 years 8 months 2 weeks 1 day 8 hours ago) and read 825 times:
the fifth engine is being ferried between stations, most aircraft can carry spares like this. With the extra engine hanging out there, cruise speed is reduced from M 0.82 to M 0.78. The Air-India 747 destroyed by a bomb in 1985 near the end of it's flight to Heathrow was carrying a fifth engine. The Air-India flight was late as a result of the slower speed and was thereby still in-flight when the device exploded. (The same day a CPAir 747 landed at Vancouver and a bomb exploded as the containers were offloaded - two airport workers died but cos the flight was on time the aircraft was safely on the ground when the timer went off, as was the bombers' presumed intention.)
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz