Flight Manual Navigation System Specifications

In plain language

If your BVLOS drone relies on GPS, you must document its accuracy, potential vulnerabilities (like clock errors), and the steps the pilot must take if the GPS signal degrades in your Flight Manual.

Requirement as structured

CAAS states that for navigation systems relying on external reference sources like GPS, the operator must specify the sensor accuracy, areas of susceptibility to degradation, and pilot procedures for degraded navigation in the Flight Manual.

Original regulatory text

For navigation systems that utilize an external reference source (such as GPS) as the primary means of ensuring navigation performance, the operator should specify the following information in the Flight Manual: i) Navigation sensor accuracy (to include both normal and degraded modes); ii) Areas of navigator susceptibility that can result in the degraded mode (such as clock timing errors etc.); and iii) Any operational procedures that must be performed by the UA pilot to compensate for the degraded navigation.

Applies when

operation

BVLOS