There are about 6,800 of the 737 NG jets in service around the world. Their model names are the 737-700, 737-800 and 737-900. The Boeing 737 NG is an older version of the company's 737 MAX aircraft.

Qantas Airways Ltd <QAN.AX> said on Friday it found structural cracks in three of its Boeing Co <BA.N> 737 NG planes after conducting earlier-than-required checks of its aircraft as ...