MN-FLT-OH-201
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Incorrect FMC Constraint Altitude on a Standard Terminal Arrival Route (STAR) with a Common Waypoint, after Selection of another Approach
GOT-2
Flight Crew Operations Manual Bulletin
for
Gol Linhas Aereas S.A.
Number:
GOT
-
2 R1
IssueDate:
August 15, 2019
Airplane Effectivity: 737-8/-9 Airplanes with FMC U13
Subject:
Incorrect FMC Constraint Altitude on a Standard Terminal Arrival
Route (STAR) with a Common Waypoint, after Selection of another
Approach
Reason:
To inform crews about the incorrect FMC Constraint Altitude, when
selecting another approach that has a common waypoint with the
original STAR in the active flight plan.
This FCOMB is revised to include the 737 MAX-9.
THE FOLLOWING PROCEDURE AND/OR INFORMATION IS EFFECTIVE UPON RECEIPT
Background Information
For airplanes with FMC U13, when a selected approach is changed to another
approach that has a common waypoint with the original STAR, the FMC will use
the higher constraint altitude for the common waypoint.
Operating Instructions
When a selected approach is changed for another approach that has a common
waypoint with the original STAR, verify the waypoint constraint altitude after
changing the selected approach.
This anomaly will be corrected in FMC software update U14.
Information in this bulletin is recommended by The Boeing Company, but may not be FAA approved
at the time of writing. In the event of conflict with the FAA approved Airplane Flight Manual
(AFM), the AFM shall supersede. The Boeing Company regards the information or procedures
described herein as having a direct or indirect bearing on the safe operation of this model airplane.
March 1, 2021
