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Why did the arrival of the jumbo jet prove to be both a boon and a bane for the air cargo business?What is Jumbo jet?Boeing 747

Wide-body commercial jet airliner and cargo aircraftOriginal nickname Jumbo Jet or Queen of the Skies

First wide-body produced by Boeing

raised cockpit allows front loading of cargo on freight variants

easily converted to a cargo carrier by removing seats and installing a front cargo door.

Jumbo jet become as boon because

All-cargo aircraft they provided the capacity to carry containers as big as 8 840 feet

Lift over 100 tons per trip

February 21, 1974, Sabena World Airways marked another important first in the jumbo-jet era by introducing the 747 Combi in scheduled service

Aircraft that divided the main deck so that 8 810 foot cargo containers could be carried after offload thepassenger compartment

Jumbo jet become as bane (kutukan) because

The bellies of passenger aircraft could accommodate most of the air cargo tonnage available

Less cost than dedicated freighter aircraft

Combination of expanded belly capacity and lower air freight rates permitted under the CABs(Civil Aeronautic Board) liberalized pricing policies

Deregulation in 1978 proved to be the death knell for freighter operations Why?TWA(Trance World Airline) operated its last freighter in December 1978subsequent years, American, United, and Pan Am all got out of the business