AD/VIPER/3 - Blow Off Valve Operation Limit
1AD/VIPER/3 - Blow Off Valve Operation Limit
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text Rolls Royce Turbine Engines - Viper Series
AD/VIPER/3 Blow Off Valve Operation Limit 3/90
Applicability: Viper Mk. 521, 522 engines.
Requirement: 1. Action in accordance with Rolls Royce Service Bulletin No. 75-A32, or
- CAO 106 AD/RRT-V/13. Compliance: Effective 22 March 1990.
Background: This Directive has been reissued to require a revised blow-off valve operating point to reduce the possibility of engine surge or stall.