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Transport Canada and EASA both cleared the MAX in late January 2021, subject to additional requirements. [91] [92] Other regulators worldwide progressively ungrounded the aircraft, including those in the UAE, Australia, Kenya, and Brazil. [93] The Indian Directorate General of Civil Aviation (DGCA) rescinded its ban on MAX airplanes in late August on the condition that they meet the requirements set by the FAA and EASA. [94] China's civil aviation regulator (CAAC) cleared the 94 jets stored by 11 carriers in China to fly again in December 2021. Deliveries of approximately 120 planes stored by Boeing resumed in early 2022, with over 180 countries out of 195 having lifted the grounding. [95] However, EASA forbade airlines from performing RNP AR approaches with the MAX. [96] Production ramp-up and recovery [ edit ] Shepardson, David (April 28, 2020). "Boeing 737 MAX expected to remain grounded until at least August: sources". Reuters. Archived from the original on June 3, 2020 . Retrieved May 27, 2020. Boeing 737-8 and 737-9 Airplanes: Return to Service" (PDF). Federal Aviation Administration. November 18, 2020. Archived (PDF) from the original on November 18, 2020 . Retrieved November 19, 2020. The 737 MAX gained FAA certification on March 8, 2017, [50] [51] and in the same month was approved by EASA on March 27, 2017. [52] After completing 2,000 test flight hours and 180-minute ETOPS testing requiring 3,000 simulated flight cycles in April 2017, CFM International notified Boeing of a possible manufacturing quality issue with low pressure turbine (LPT) discs in LEAP-1B engines. [53] Boeing suspended 737 MAX flights on May 4, [54] and resumed flights on May 12. [55]Clark, Oliver (February 14, 2019). "Ryanair Max to make debut at Stansted". FlightGlobal. Archived from the original on November 29, 2019 . Retrieved February 15, 2019. The BBJ MAX 8 and BBJ MAX 9 are business jet variants of the 737 MAX 8 and 9, with new CFM LEAP-1B engines and advanced winglets providing 13% better fuel burn than the Boeing Business Jet; the BBJ MAX 8 has a 6,325 nautical miles (11,710km; 7,280mi) range, and the BBJ MAX 9 a 6,255nmi (11,580km) range. [209] The BBJ MAX 7 was unveiled in October 2016, with a 7,000nmi (12,960km; 8,060mi) range and 10% lower operating costs than the original BBJ, while being larger. [210] The BBJ MAX 8 first flew on April 16, 2018, before delivery later the same year, and has a range of 6,640nmi (12,300km; 7,640mi) with an auxiliary fuel tank. [211] Operators [ edit ] Norris, Guy (January 10, 2017). "Boeing Defines Final 737 MAX Stretch Offering". Aviation Week & Space Technology. Archived from the original on January 31, 2017 . Retrieved January 11, 2017. a b c Norris, Guy (February 15, 2017). "In Pictures: First Boeing 737-9 Noses Toward Rollout". Aviation Week & Space Technology. Archived from the original on February 15, 2017 . Retrieved February 16, 2017.

In early January 2020, an issue was discovered in the MAX software update, which impacted its recertification effort. [82] As of mid-January, Boeing expected the MAX to return to service by mid-2020. [83] In late April, following the COVID-19 pandemic, Boeing then hoped to win regulatory approval by August 2020. [84] Between June 29 and July 1, the FAA and Boeing conducted a series of recertification test flights. [85] Transport Canada and EASA each concluded their own independent recertification flights in late August and early September. [86] On November 18, the FAA announced that the MAX had been cleared to return to service. Before individual aircraft could resume service, repairs were required as set out in an airworthiness directive from the FAA. Airline training programs also required approval. [87] If Congress doesn't mandate Boeing 737 MAX safety retrofits, Europe will". The Seattle Times. December 2, 2022 . Retrieved December 21, 2022. Hemmerdinger, Jon (December 1, 2022). "Top US lawmakers to decide fate of 737 Max 7 and Max 10 regulatory exemption". Flight Global. Boeing 737 Max: Brazilian airline resumes passenger flights". BBC News. December 9, 2020. Archived from the original on December 9, 2020 . Retrieved December 9, 2020.Southwest Airlines Reports Second Quarter 2022 Results". Southwest Airlines Newsroom (Press release). July 28, 2022. Archived from the original on September 14, 2022. Boeing Business Jets Unveils BBJ MAX 7" (Press release). Boeing. October 31, 2016. Archived from the original on October 31, 2018 . Retrieved November 1, 2016. Ostrower, Jon (November 7, 2011). "Boeing completes initial review of 737 Max configuration". Air Transport Intelligence News. FlightGlobal. Archived from the original on November 8, 2011 . Retrieved November 7, 2011. MAX 8 performs first international flight". AeroLatin News. May 3, 2016. Archived from the original on April 8, 2019 . Retrieved March 12, 2019.

Boeing has temporarily stopped making 737 Max airplanes". CNN. January 21, 2020. Archived from the original on April 14, 2020 . Retrieved April 8, 2020.First High-Capacity Boeing 737-8 Enters Flight Test Jan 23, 2019 Guy Norris". Aviation Week Network. Archived from the original on January 26, 2019 . Retrieved January 24, 2019. Genovese, Daniella (December 3, 2020). "Journalists board American Airlines Boeing 737 Max in first public flight since grounding". FOXBusiness. Archived from the original on December 3, 2020 . Retrieved December 4, 2020. Boeing aims to minimise 737 Max changes". Air Transport Intelligence News. FlightGlobal. August 31, 2011. Archived from the original on December 4, 2018 . Retrieved February 16, 2017. Trimble, Stephen (November 23, 2017). "Boeing starts assembling first Max 7". FlightGlobal. Archived from the original on December 1, 2017 . Retrieved November 23, 2017.