The PDCS quickly became standard fit and many were also retrofitted. The 727 gave a 3.94% fuel saving because of its longer sector The 737-200 showed averageįuel savings of 2.95% with a 2 minute increase in trip time over an average 71 With regular line crews and a flight data observer. It was trialed on two in-serviceĪircraft, a Continental 727-200 and a Lufthansa 737-200 for nine months in 1978 It enabled EPR and ASI bugs to be set by the computer and advise on the optimumįlight level, all for best fuel economy. The PDCS was developed jointly by Boeing and Lear Seigler in the late 1970's. Smiths Industries (formerly Lear Seigler) has First introduced on the series 200 in Feb 1979 as the Performance DataĬomputer System (PDCS), the Flight Management Computer (FMC) was a huge
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