US federal regulators have found a serious consequence to airlines parking planes because of the coronavirus pandemic, and ordered an emergency fix.
The Federal Aviation Administration has issued an emergency notice to all airlines that fly Boeing 737 jets, saying planes that have returned to service could have their engines suddenly fail "without the ability to restart, which could result in a forced off-airport landing," reports the CNN.
The 737 is the backbone of several major airlines which have been returning jets to service as they bank on a recovery in ticket sales.
Under the directive, airlines will have to inspect engines on hundreds of the workhorse jets looking for corroded parts.
The FAA found the engine part in question may "fail to close when power is reduced at top of descent, resulting in an unrecoverable compressor stall and the inability to restart the engine."
The agency said the directive "was prompted by four recent" reports of incidents where an engine shut down.