Lightning/High Intensity Radiated Field (L/HIRF) protection systems have been identified to develop a dedicated maintenance. The intent of this maintenance is to reduce the possibility that a single failure cause (such as a lightning strike), and the occurrence of a common failure cause (such as ED or AD) across redundant channels of L/HIRF protection, could impact aircraft airworthiness.

 

This section contains guidelines for development of scheduled maintenance tasks for aircraft L/HIRF protection systems. Each L/HIRF protection system item is evaluated in terms of its susceptibility to degradation from environmental deterioration and/or accidental damage. The L/HIRF protection system maintenance tasks are developed in support of the aircraft type certification and MRB report development.

 

L/HIRF maintenance relies on adequate protection provided by both external and internal L/HIRF protection components.

 

In order to perform the L/HIRF Analysis you need to have Zonal tree and may have Product Breakdown tree built in RAM Commander. See Zonal Analysis for more information.

 

 

Detailed guide on this module is available on demand from ALD.