Currently the oldest of the NW Nines is N930RC (msn 45729/ln 16 ex-N946L), delivered to Bonanza on January 16, 1966. Ship 9140 began life as one of only three DC-9-11s built. The -11 had an MTOW of 77,500 lbs, which met the old FAA rule for a two man crew. When the 80,000 lb limit was lifted in early 1965, Douglas offered an upgrade to -14 standard to customers with -11s on order. Bonanza was the only one to keep the -11s as is.
All three (N945L, N946L, and N947L) were converted to -14s by Air West in 1969. 9140 (re-registered N930RC by Republic after spending a few years with Finnair) is the last of BZ's original three still at NW. As of her last SDR filing in April 2001, 9140 had 69,201 hours and 96,589 cycles. With an average of around 2,000 cycles per year, 9140 should be reaching NWA's 100,000 cycle retirement limit by the end of this year.