This document describes how to conduct lightning direct effects tests and indirect system upset effects tests. It presents test techniques for simulated lightning testing of aircraft and the associated systems. This document does not include design criteria, nor does it specify which items should or should not be tested.

Each test method is set out in a uniform format, describing the test purpose, test object, test setup, test waveforms (voltage and/or current), measurements and data recording, test procedure, and data interpretation. Guidance is provided on how to select the appropriate test or series of tests, and how the test results can be assessed.

ED-105B reflects significant advances in camera technology, new data about flammable gas testing, and latest lightning indirect effects methodology requiring an update to the lightning test method guidance. Additionally, the guidance layout is better coordinated with ED-158, ED-303, and ED-14(). This document is technically identical to SAE ARP 5416B.