EASA SIB CE-19-10: Rockwell Collins Pro Line 4 and Pro Line 21 Flight Management Systems

What to do

Operators and pilots using the affected Rockwell Collins Pro Line 4 and Pro Line 21 FMS versions should avoid using the DELETE function to remove waypoints on the CDU LEGS page. Instead, they should follow alternative waypoint deletion methods as detailed in Rockwell Collins Operators Bulletin OPSB 0057-05R2. No compliance deadline is specified, but immediate adoption of the recommended procedures is advised to mitigate the issue.

Summary

The Special Airworthiness Information Bulletin SAIB: CE-19-10 is an FAA informational bulletin addressing an issue with certain versions of the Rockwell Collins Pro Line 4 and Pro Line 21 Flight Management Systems (FMS), specifically FMC-3000, FMC-4200, FMC-5000, and FMC-6000 versions 97 through 3.2. The bulletin informs operators that deleting waypoints using the DELETE function on these FMS versions may cause the aircraft to make an incorrect turn direction during departures, STARs, or approaches. This bulletin does not apply to any specific aircraft type but relates to the affected FMS equipment installed on various aircraft.

What changed

This bulletin introduces awareness of a software issue in specific versions of Rockwell Collins Pro Line 4 and Pro Line 21 FMS that can cause incorrect turn directions when deleting waypoints. It clarifies that this issue is not currently considered an unsafe condition warranting an airworthiness directive under 14 CFR part 39. The FAA recommends avoiding the DELETE function and using alternative methods to remove waypoints.

Why it matters

This information is critical for aviation professionals because incorrect turn directions during flight procedures can affect flight safety and operational efficiency. Operators and maintenance teams need to be aware of this software behavior to prevent unintended flight path deviations. Compliance teams should note that no mandatory directive is issued, but following the FAA's recommendations helps maintain safe navigation and operational integrity.