Next Generation ScanEagle Engine Passes FAR 33 Endurance Test

● The Orbital designed and developed Insitu ScanEagle Propulsion System is the first heavy fuel engine in its  class to successfully complete the stringent United States Federal Aviation Administration’s FAR 33.49 
endurance test for reciprocating aircraft engines.
● The testing success demonstrates Orbital’s preeminent propulsion systems development capability for  unmanned aviation engines. 
● The ScanEagle Propulsion System has set a new durability standard in the Small Unmanned Aircraft Systems  propulsion system market. 
● Successful completion of the endurance test and delivering benchmark propulsion system durability will  enhance Orbital’s growing reputation in the expanding Unmanned Aviation Market. 
● Orbital continues to work with Insitu, a subsidiary of The Boeing Company, on rigorous bench testing of the  ScanEagle engine, which will then be followed by flight testing.
Orbital is pleased to announce that the Orbital designed and developed, Insitu ScanEagle propulsion system has  recently passed the United States of America, Federal Aviation Administration’s (“FAA”) Federal Aviation 
Regulation section 33.49 reciprocating aircraft engine endurance test (“FAR 33.49”). FAR 33.49 is a stringent FAA  reciprocating aircraft engine endurance test. Piston engines for manned aircraft must pass the FAR 33.49 test to 
be certified for use. While not essential for unmanned aircraft, Insitu and Orbital agreed to include the FAR 33.49  test as part of the development and validation testing program of the new ScanEagle engine. Achieving FAR 33.49 
compliance for this type of engine sets a new benchmark for competitors in the Small Unmanned Aircraft Systems  (“SUAS”) industry. This achievement is part of the development plan for Orbital’s Unmanned Aerial Vehicle’s 
(“UAV”) business and closely follows the delivery of Orbital’s first engine to Insitu, announced on 16 September,  2014. 

Orbital has been working with Insitu, a subsidiary of Boeing, since July 2013 as part of an initial design,  development and validation contract to supply propulsion systems for Insitu’s UAV products. Passing the FAA 
endurance test is an important program milestone and is consistent with Insitu’s targets for the endurance and  durability of ScanEagle, which are far beyond what is currently available in the market. It is significant that 
Orbital’s ScanEagle engine passed the test using “heavy fuel,” which is the preferred fuel for Insitu’s target  customers. 

“Most SUAS engine manufactures use ‘hobby engines’ as the basis for their power plant; engines originally  developed for radio controlled airplanes for personal use. The Orbital UAV engine and propulsion system is an 
original design using Orbital technology and expertise with the goal to achieve benchmark performance and to  exceed customer expectations for durability. Passing FAR 33.49 is a demonstration of the new engine’s potential 
to meet the target objectives. To our knowledge, there are no other spark-ignited piston engines running on  heavy fuel that have met the FAR 33.49 level of performance and it is not likely there will be unless they employ 
Orbital’s FlexDI technology,” states Mr Terry Stinson, Orbital’s Managing Director and Chief Executive Officer. 
The FAR 33.49 test was conducted at Orbital’s development centre in Perth Western Australia. Orbital has  developed the most sophisticated small reciprocating aviation engine development facility in the world, which 
provides the ability to perform a manned aircraft type test such as the FAR 33.49 locally. Orbital currently has 10  engine test cells dedicated to UAV engine development and includes altitude testing, extreme environmental 
testing, and noise, vibration and harshness testing. Additional development facilities include aviation engine  control systems, fuel system development, and many other capabilities. Orbital’s world-class facilities and 
expertise provide an ideal capability to ensure the current engine development program meets the high standard  set by Insitu, and makes Orbital a compelling solution for potential UAV propulsion system customers from 
around the world.
Delivering on the Insitu propulsion system development project is a key element to Orbital’s aggressive strategy  for growth and diversification. Orbital offers a compelling solution to companies such as Insitu who are seeking, 
and have an imperative need, to run engines on heavy fuels to improve aircraft range, reduce operating costs,  and improve the reliability and durability of their unmanned aircraft. Successful completion of the current Insitu 
program is expected to lead to a production contract, initially supplied from Orbital’s facilities in Perth, with  future plans to establish new Orbital production facilities in the United States.