By Rajesh Kumar Singh, Abhijith Ganapavaram and David Shepardson (Reuters) -Boeing’s troubles with its 737 MAX jets are upending the aerospace industry’s 2024 plans, changing airlines’ fleet and expansion goals as U.S. regulators froze production of the best-selling jets. The Federal Aviation Administration ramped up scrutiny of Boeing after a frightening Jan. 5 incident when a cabin panel tore off of an Alaska Airlines jet mid-flight. The plane landed safely with only minor injuries to people on board – but that experience has forced the industry to grapple with problems with Boeing’s manufac…