Boeing 737 MAX-900's mysterious engine fire at Newark Airport under NTSB Investigation.

Last Friday, the U.S. National Transportation Safety Board (NTSB) unveiled an ongoing probe into an engine conflagration, which happened recently aboard a Boeing 737 MAX-900, under United Airlines' operation, at New Jersey's Newark Liberty International Airport. The incident, devoid of visible smoke or flame, triggered a swift shutdown of one engine by the flight crew, according to the NTSB.

It followed an alarming indication of an engine fire on United Airlines Flight 2376, moments after its successful touchdown at Newark from Fort Lauderdale, Florida on the late evening of June 28. To the onlookers, the airliner appeared serene, devoid of any visible combustion. But on being towed to the gate, discerning eyes of maintenance staff spotted tell-tale signs of a fuel leakage from the ill-fated engine. Traces of heat damage and soot smudges, camouflaged on the engine cases and external surfaces, whispered tales of a silent ordeal the engine had seemingly endured.

As per the Federal Aviation Administration's (FAA) records, the ensuing disembarkation at Newark proceeded in an orderly fashion, just like any other day. This is despite the fact that the flight crew, on high alert, had thoughtfully activated the fire extinguishers of the engine, keeping disaster at bay.

On being quizzed about the incident, United Airlines maintained a reserved stance, confirming the ongoing investigation but steering clear of further comments. Boeing, when approached for insights, nudged the inquiries towards NTSB and United.

The aircraft, an addition to the skies in 2020, boasts a LEAP-1B engine, the brainchild of French-American aerospace manufacturer, CFM International. This prestigious firm, a collaborative endeavor of General Electric and France's Safran, confirmed its commitment to lend support to the NTSB's inquiry into the incident.