Global Navigation Satellite System outage leading to navigation/surveillance degradation

Effectivity: Learjet, Challenger, and Global aircraft

ATA 34-55

By: Stephane Beauchamp –Technical Services

European Union Aviation Safety Agency (EASA) recently released Safety Information Bulletin SIB No. 2022-02- specifically on the effects of Global Navigation Satellite Systems (GNSS) jamming and/or possible spoofing, which has intensified in geographical areas surrounding conflict zone and other areas. GNSS jamming and/or possible spoofing were observed by aircraft in various phases of flights, in certain cases leading to re-routing or even to changing the destination due to the inability to perform a safe landing procedure. 

The SIB provides a non-exhaustive list of some potential issues that a degradation of GNSS signal could generate. Additionally, it provides Air Operator recommendations, noting that this is for information only and these recommendations are not mandatory. 

For the details on this SIB No. 2022-02 Publication refer to: https://ad.easa.europa.eu/ad/2022-02 

Operators may also refer to a previous article titled, “Global navigational satellite system: interference, signal loss or jamming” published in the former Bombardier Customer Forum & Newsletter on Thursday, May 21, 2020, in Volume 17, Issue 10, located on the Customer Portal.