Proposed 727-300 A proposed 169-seat version was developed in consultation with United Airlines in 1972, which initially expressed an interest in ordering 50 aircraft. Also, interest was shown from Indian Airlines for a one-class version with 180 seats. The fuselage would have been lengthened by and the undercarriage strengthened. The three engines would have been replaced by two more powerful JT8D-217 engines under the T tail. Many cockpit components would have been in common with the 737-200 and improved engine management systems would have eliminated the need for the flight engineer. United did not proceed with its order and Indian Airlines instead ordered the larger Airbus A300, so the project was cancelled in 1976.
Proposed 727-300 A proposed 169-seat version was developed in consultation with United Airlines in 1972, which initially expressed an interest in ordering 50 aircraft Also, interest was shown from Indian Airlines for a one-class version with 180 seats. The fuselage would have been lengthened by and the undercarriage strengthened. The three engines would have been replaced by two more powerful JT8D-217 engines under the T tail. Many cockpit components would have been in common with the 737-200 and improved engine management systems would have eliminated the need for the flight engineer United did not proceed with its order and Indian Airlines instead ordered the larger Airbus A300 so the project was cancelled in 1976.