NOTICE to Operators of Rockwell Collins Flight Management Systems Pro Line 4 and Pro Line 21

NOTICE to Operators of Rockwell Collins Flight Management Systems Pro Line 4 and Pro Line 21 FMS 3.3.x through FMS 4.x
Notice Number: NOTC7524

Notice to Operators of Rockwell Collins Flight Management Systems Pro Line 4 and Pro Line 21 FMS 3.3.x through FMS 4.x

From Rockwell Collins, Commercial Systems Customer Support

Subject: The FMS may turn in the wrong direction after sequencing a "Climb to" altitude that was manually edited or Temperature Compensated

Overview: 

If the crew manually edits or temperature compensates a "Climb to" altitude, the FMS will remove the database turn direction (if any) on the immediately following leg. The FMS will turn in the wrong direction after sequencing the "Climb to" leg if the shortest turn direction is different than the required turn direction onto the next leg.

For more information please see the attached PDF from Rockwell Collins of click here (https://www.faasafety.gov/files/notices/2017/Dec/OPSB_0166-17R2.pdf)

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