Magnetic Variation (MagVar) Software Update
Innovative Solutions & Support’s (IS&S) Magnetic Variation (MagVar) software update ensures your fleet’s inertial reference systems magnetic variation table is up to date with the Earth’s natural change, avoiding operational limitation by allowing your aircraft to operate safely on precision approaches.
The MagVar update is for IRU Part Numbers:
- HG1050AD09
- HG1050AD10
- HG1050AD11
- HG1050AD15
In aviation, all air navigation is referenced to the earth’s Earth’s magnetic north pole, which is constantly shifting. IS&S’s MagVar solution updates your aircraft’s magnetic variation table, ensuring that no conflict happens between onboard systems and published instrument procedures, avoiding hazardous magnetic-related navigation errors and operational limitations in challenging weather conditions.
Maintaining IRU/ADIRU MagVar is required to avoid aircraft operational restrictions on Auto-land / Auto rollout operations below Cat I ILS approaches.
A major consequence of an out-of-date magnetic variation table is on the lateral guidance during Auto-land (ILS Cat II and Cat III approaches) and automatic rollout.