Originally Posted by
Xray678
Someone explain it to me…..there are versions of the Max approved and flying. Beyond different fuselage lengths are there differences in the bleeds/cowl ice/HUD ? I don’t understand why there is a huge delay in approving the Max 10.
The 8 & 9 are basically re-engined 737 8/9.
The MAX 7 is different than the 73-7, so treated as a "new" airframe. The MAX 10 is the Uber stretched 73 and is considered a "new" airframe. Thus both the 7&10 require certification.
That's the 2 minute or less explanation. It's a bit more involved than this but that's about all one needs to now without getting really wonky.