flight cycles

From:         ngupta@nano.mit.edu (Nitin Gupta)
Organization: Massachvsetts Institvte of Technology
Date:         07 Dec 94 01:15:45 
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when an airline uses a quick-turnaround scheme on short-haul routes, the  
aircraft can approach 7-9 flights cycles per day. in the past i remember  
age being given in total flight cycles. recently it seems that age in year  
units is more widely used.

this leads me to two questions:

1.  flights cycle units are more meaningful, no?

2.  do quick-turnaround operations reduce the useful operating age of an  
aircraft? or is this something that maintenance can overcome?

with northwest planning on flying some DC-9s into the plane's 40th year,  
it appears that there is no obvious way to date an airframe.

blue skies
Nitin Gupta                             MIT NanoStructures Laboratory
ngupta@nano.mit.edu       NeXT Mail Encouraged           617 253 0722