Flyadeal, the low cost airline of Saudi Arabia, has canceled the order for 30 Boeing 737 Max aircraft.
The decision follows the crash of two 737 Max jets, the first in Indonesia in October, followed by one in Ethiopia in March, which killed 346 people.
Since then, the plane has been grounded and Boeing is working on a solution that will satisfy the regulators.
Boeing According to Flyadeal, the provisional order was not executed due to "schedule requirements".
The deal, which included the additional option to purchase 20 more 737 Max aircraft, had a value of $ 5.9 billion at list prices, but the airline would do so offered a discount on this price tag.
Instead, flyadeal, which is controlled by state-owned Saudi Arabian Airlines, will operate a fleet of Airbus A320 aircraft.
The loss of flight ET302 by Ethiopian Airlines in March was the second fatal a incident with a 737 Max within five months.
An almost identical aircraft of the Indonesian air carrier Lion Air went under in October 201
The crash investigators have joined forces with the control system of the aircraft and Boeing have collaborated with regulators to perform a software upgrade.
There is no time at which the aircraft could be released for flying again.
Last week, Boeing announced $ 100 million to provide for families affected by the two accidents.
The multi-year payment is independent of the actions initiated after the catastrophes, in which a total of 346 people were killed.
Family lawyers dismissed the move.