Compliance criteria for 14 CFR 33.28, aircraft engines, electrical and electronic engine control systems

Original publisher: [Washington, D.C.]: U.S. Dept. of Transportation, Federal Aviation Administration, [2001]. OCLC Number: (OCoLC)278802964 Subject: Airplanes -- Control systems -- Certification. Excerpt: ... 6 / 29 / 01 AC 33.28-1 d. Substantiating Data. The instruction manual should include data from analyses conducted to comply with § § 33.28 ( b ) and ( c ), data from the environmental testing conducted to comply with § 33.28 ( d ), and data from the software level determinations conducted to comply with § 33.28 ( e ). This data will assist the installer in safely installing the engine. The applicant should have available and provide, as required, the following specific data: ( 1 ) Data for all operating modes, to demonstrate that the control meets its design intent. ( 2 ) Data to show that a progressive means of increasing power or thrust with throttle or load demand is provided for all control modes. ( 3 ) Data for the following: ( a ) The software level ( for each function, if necessary ). ( b ) The estimated failure rates for: 1. Engine shut-down in-flight due to engine control causes. 2. Loss of engine or propeller control or significant change in power or thrust. 3. Failures to the back-up system. 4. Transmission of faulty parameters that affect cockpit located engine displays, or other safety critical functions. 5. Loss of any critical safeguards, such as overspeed or valves needed for fire protection. 6. Loss of any aircraft-supplied data or power required to assure proper engine operation. 7. Other safety significant failure conditions, such as the probability of an uncontrolled overspeed and the other control system associated events as determined from the system safety analysis ( SSA ). A control system event is one that the control system causes or is involved in preventing. ( 4 ) The types and levels of environmental exposure for which the EEC system has been successfully qualified; for example, vibration, temperature, HIRF, and lightning. Fo...