EASA AD 2025-0088: ROCKWELL COLLINS: Satellite Based Augmentation Systems / Global Positioning System Receiver — Replacement

What to do

Operators of aircraft equipped with affected Rockwell Collins SBAS receivers must replace these units with serviceable parts within two years from 30 April 2025 or before the next flight requiring LPV-200 approval, whichever is later. Installation of affected parts on aircraft approved for LPV-200 operations is prohibited after the replacement deadline. Compliance should be performed following approved modification instructions from the aircraft or design approval holders.

Summary

EASA Airworthiness Directive 2025-0088 addresses the replacement of certain Rockwell Collins Satellite Based Augmentation Systems (SBAS) and Global Positioning System (GPS) receivers, specifically models GPS-4000S, GLU-2100, GLUS-2100, and GLUS-2100A. These receivers are installed on various aircraft including Airbus A318/A319/A320/A321, Airbus Canada BD-500 (A220 series), Airbus Defence and Space CN-235/C-295, among others. The directive mandates replacement of affected parts to ensure compliance with operational performance standards for satellite navigation systems used in aviation.

What changed

This new airworthiness directive introduces a mandatory replacement of affected Rockwell Collins SBAS receivers due to identified non-compliance with RTCA DO-229 standards. The affected receivers may incorrectly process integrity messages, potentially compromising navigation safety during LPV-200 operations. The directive requires operators to replace these receivers with serviceable parts within two years or before conducting LPV-200 operations if approval is newly obtained.

Why it matters

This directive is critical for aviation professionals because it addresses a potential safety risk related to satellite navigation integrity, which could affect flight crew awareness of navigation system reliability. Operators and maintenance organizations must ensure affected receivers are replaced to maintain compliance with European Union aviation safety regulations and to continue safe LPV-200 approach operations. Failure to comply could result in operating aircraft with navigation systems that do not meet required safety standards.