The LOA altitude overrides the IAFDOF.

• A. The LOA altitude overrides the IAFDOF.
• B. IAFDOF status always takes precedence over LOA.
• C. LOA has no effect on IAFDOF.
• D. Color code determines whether LOA overrides occur.

Answer: (A)

In this situation, the authority and precedence rule is that a LOA altitude is the controlling constraint for that segment. A Letter of Agreement (LOA) altitude is a formally defined, facility-specific authorization that takes precedence over the standard IAFDOF setting. When both exist, you must follow the LOA altitude because it is the stricter, locally authorized instruction designed to ensure safe and compliant operations in that airspace or procedure.

So if the LOA calls for a higher or different altitude on a segment, you apply that LOA altitude even if the default IAFDOF would permit another altitude. The other options aren’t correct because they imply either the IAFDOF always overrides, that LOA has no effect, or that an unrelated factor like color coding determines overrides, none of which aligns with the established priority of LOA in this context.