The crash of Lion Air Flight 610 shortly after takeoff from Jakarta last October killed all 189 people on board.
Nations around the world, including an initially reluctant United States, have suspended the 371 MAX models in operation, though airlines are largely coping by switching planes.
"American has re-routed aircraft throughout our network to cover as much of the MAX schedule as we can", said an airline spokesperson.
The two crashes have shaken aviation industry, scared passengers worldwide and put significant pressure on the world's biggest aircraft manufacturer to prove the safety of a model meant to be the standard for decades.
Air Canada has 24 MAX 8 aircraft, which it uses mainly for domestic and USA routes, and cancelled London-bound flights from Halifax and St. John's, N.L., after the United Kingdom banned all Boeing MAX 8 jets from its airspace.
Mr GebreMariam said all employees were given new training after the Lion Air disaster.
Meanwhile, France's Bureau of Enquiry and Analysis for Civil Aviation Safety (BEA) in Paris has tweeted a picture of the Flight Data Recorder (FDR), provided by the Ethiopian investigation team, reports CNN.
Under global rules, Ethiopia is leading the investigation, but the BEA will canalyse the black boxes as an adviser.
Among major crash investigations the BEA has led were the 2015 plunge of a Germanwings jet - whose black boxes revealed that the co-pilot had deliberately slammed the plane into an Alpine mountainside after locking the captain out of the cockpit.
The US Federal Aviation Administration (FAA) ordered the temporary grounding of all 737 MAX aircraft operated by US airlines or in US airspace on Wednesday.
The cause of the Indonesian crash is still being investigated.
Countries that have grounded their 737 Max 8 fleets include India, Canada, China, Singapore and Indonesia; the European Union has also grounded the aircraft. The airline, which has 34 of the 72 USA -based Max planes that were in operation, cancelled 39 flights Thursday due to the grounding.
Trump told reporters the "safety of the American people and all peoples is our paramount concern". He said the FAA has 'always been a very cooperative, data-driven group, and now that seems to have kind of gone to the wayside'.
Boeing's stock has fallen about 11% since the crash, wiping almost $26bn off its market value.
Boeing chief Dennis Muilenburg said he supported the USA decision "out of an abundance of caution" but had "full confidence" in the safety of the plane. "We are doing everything we can to understand the cause of the accidents in partnership with the investigators, deploy safety enhancements and help ensure this does not happen again", the company added.
Mr. Poponak estimates the Max jet will account for 45 per cent of total Boeing EBIT over the next five years.
The accounts of the recent crashes were echoed in concerns registered by USA pilots on how the MAX 8 behaves.
WestJet said in a statement on Wednesday that it is complying with the Transport Canada decision and that it is grounding the 13 MAX aircraft in its fleet.
Several flights at Kelowna International Airport have been either delayed or cancelled as of Wednesday because of a national decision to ground Boeing's 737 MAX 8 planes.
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