Berlin Tegel Airport used the airport as a diversion airfield before. Initially, all British Airways services from Tegel—with the exception of the daily non-stop service to London Heathrow—continued to be operated by BAC One-Eleven 500s. The daily London–Heathrow non-stop was operated with Hawker Siddeley Trident 2E/3B equipment based at that airport until the end of the 1975 summer season. (It subsequently reverted to a One-Eleven 500 operation.) From 1983, British Airways began updating its Berlin fleet. This entailed phasing out the ageing One-Elevens, which were replaced with new Boeing 737-200 Adv. During the second half of the 1980s, British Airways augmented its Berlin
Okmulgee Regional Airport to bring new clients and businesses to the airport while relieving pressure on the 750-acre TAIT-operated Jones Riverside Airport, 20 minutes north, which has already expanded to capacity. The contract has since been extended. In 2016, TAIT drafted an Airport Capital Improvement Plan, also known as a Five-Year Plan, for Okmulgee Regional Airport, which was approved by the Okmulgee City Council on November 15, 2016. The document shows improvements and funding sources for fiscal years 2018 through 2022. Okmulgee Regional Airport Okmulgee Regional Airport is in Okmulgee County, Oklahoma, three miles north of the city of Okmulgee, which owns it.