Aviation Boeing 737 MAX may not return to service until August, says IATA Updated : May 30, 2019 06:36 AM IST Sources have told Reuters that the Federal Aviation Administration (FAA) expects to approve the jet's return to service as soon as late June. But airlines will then need to perform maintenance checks on the grounded planes, update the software and train pilots before the jets can fly again. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.