This is the guidance cue coming from the Flight Guidance System. For FAAD, they decided to use a beam riding guidance system. The service vehicles are rubber-tyred with a buried wire guidance system. The goods are believed to be a missile guidance system. When restoring the anterior guidance system should be compatible with the posterior guidance system. Some sort of secondary terminal guidance system was almost always needed with beam-riding weapons. The stern housed the "Luna" optical landing guidance system. The primary guidance system was a Goodyear Aerospace active radar guidance system. Within a manned system, there is a human interface needed for the guidance system. It uses an inertial guidance system. The forward dome houses the guidance system. The warhead, retrorocket, and guidance system were each contained inside the OGCh module. Mattingly alleviated this by realigning the guidance system using the Sun and Moon. Navaho, as well as a modified form of the Navaho's inertial guidance system. Development was delayed for several years because of issues with the IIR-based guidance system.