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THIS IS AN UNCONTROLLED DOCUMENT.
THIS ELECTRONIC DOCUMENT MAY HAVE BEEN SUPERCEDED.
THE MOST CURRENT DOCUMENT INFORMATION IS AVAILABLE
FROM YOUR BELL HELICOPTER TEXTRON REPRESENTATIVE.
PRODUCT DATA JANUARY 2003
ROLLS-ROYCE 250-C40B ENGINES FADEC ELECTRONIC CONTROL UNIT
TheprimarydesignparametersoftheBell
430 emphasize safety in every aspect of
the aircraft. All critical flight systems are
either duplicated or isolated / separated
tomeet/exceedthespecificationsofFAR
Part29CategoryA. Redundantloadpaths
areincorporatedthroughoutallsafety-of-
flightcomponents,suchasthemainrotor
blades,transmissionattachment,andflight
control linkage. Fuselage integrity is
ensured through two integral roll-over
bulkheadsatthefrontandrearofthecabin.
The fuel supply is contained in rupture-
resistantfabricandrubbercellswhichhave
been drop-tested when75% full from 15
meters(50feet) withoutspillage,andare
interconnected with break-away self-
sealing fittings.
The engines selected for the Bell 430 are the Rolls-Royce 250-C40B. These are a
growth version of the well - proven 250-C30 engine series from Rolls-Royce which
providereliablepowerundertheextremesofclimaticconditions.TheRolls-Royce250
engine series has accumulated over 100 million hours of flight time, with deliveries
totaling over 30,000 engines. Controlling each engine is a Full Authority Digital
Electronic Control (FADEC). The FADEC provides automatic starting, is able to
maintainrotor speed and engine matchingwithinclosertolerances,and to offera 30-
second single engine rating to enhance Category A operations. Additionally, as in all
BellHelicopters,MANUALpowermanagementofeachengineisimmediatelyavailable
to the pilot through the collective-mounted twist grip throttles.
ROLLOVER BULKHEADS
OCCUPANT PROTECTION BY REDUNDANT
FUSELAGE LOAD PATHS
ROLLS-ROYCE 250-C40B ENGINESWITH FADEC
SAFETY FEATURES