SAE ARP 5107C:2018-09-04

This SAE Aerospace Recommended Practice (ARP) provides methodologies and approaches which have been used for conducting and documenting the analyses associated with the application of Time Limited Dispatch (TLD) to the thrust control reliability of Full Authority Digital Engine Control (FADEC) systems. The TLD concept is one wherein a fault-tolerant system is allowed to operate for a predetermined length of time with faults present in the redundant elements of the system, before repairs are required. This document includes the background of the development of TLD, the structure of TLD that was developed and implemented on present generation commercial transports, and the analysis methods used to validate the application of TLD on present day FADEC equipped aircraft. Although this document is specific to TLD analyses (for FADEC systems) of the loss of thrust control, the techniques and processes discussed in this document are considered applicable to other FADEC system failure effects or other systems, such as: thrust reverser, and propeller control systems, and overspeed protection systems.

Author	SAE
Editor	SAE
Document type	Standard
Format	File
ICS	49.060 : Aerospace electric equipment and systems
Number of pages	76
Replace	SAE ARP 5107B:2006-11-15
Set	AEROPAKS10U-10
Year	2018
Document history	SAE ARP 5107B:2006-11-15
Country	USA
Keyword	SAE 5107;SAE ARP5107C;SAE ARP5107C;SAE ARP 5107