Editing Boeing 767 (section)

===Exemptions from major certification rule changes===
Following the 1996 in-flight explosion of [[TWA Flight 800]], the FAA introduced new rules about flammability reduction in 2008. In 2012, Boeing requested an exemption for the 767 from new wiring separation rules that would prevent ignition sources, because design improvements it introduced fell short of meeting such rules. One of the justification by Boeing: changes to the fuel quantity indication system would require a halt of delivery by three years as production of the 767 model was expected to end shortly. FAA gave the manufacturer three years to have a compliant system while deliveries continued. In 2014, Boeing, without a new design available, asked for and received another time-limited exemption for just the 767-300 and 767-300ER until 2019 when commercial production was expected to cease. But in 2017, with continual demand for the 767-300F, Boeing asked for another exemption up to the end of 2027, well past the revised production end date. It is noted that while Boeing requested extension of the original exemption from 2016 to 2019 based upon the cost of upgrading the design and their low production rate and ending production in 2019, Boeing developed the [[KC-46]] tanker (based on the 767) which fully compliant with the new rulings and is assembled on the same production line as the 767. Since the 2019 exemption went into effect, Boeing has increased production of the freighter to satisfy demand.<ref>{{cite news |last1=Broderick |first1=Sean |title=FAA Faces Tough Choice On Latest 737-7 Exemption Request {{!}} Aviation Week Network |url=https://aviationweek.com/air-transport/safety-ops-regulation/faa-faces-tough-choice-latest-737-7-exemption-request |access-date=26 November 2024 |work=aviationweek.com |date=19 January 2024}}</ref>