76-14-05 BELL: Amendment 39-2669. Applies to Model 206L helicopters, Serial Numbers 45006 through 45020, with fuel valve Part Number 206-063-640-1 installed, certificated in all categories.
Compliance required within the next 100 hours time in service after the effective date of this AD, unless already accomplished.
To prevent failure of fuel system components due to excessive pressure from thermal expansion of the fuel after engine shutdown, remove fuel shutoff valve P/N 206-063-640-1 and replace it with fuel shutoff valve P/N 206-063-640-3.
Bell Helicopter Textron Service Bulletin No. 206L-76-2 pertains to this subject and provides approved instructions for this replacement activity.
This amendment becomes effective August 19, 1976.