Originally Posted by
mtp59
Not only was the Metro III and 23 faster it had a higher service ceiling. Not sure of the 1900D's design life but through an SID program the Metro can make it to 50,000 flight hours. Last estimate shows that of the 1053 Metros/Merlins built some 600+ are still in service.
The metros can make the 50K, but the tail has to be completely rebuilt at 35K if I remember correctly. Big investment.