What warrants a preflight amended release?

• A. A new deferral (MEL/CDL) is added or removed
• B. Greater than 2 hour delay
• C. Aircraft swap was made
• D. PIC requests an increase in dispatch fuel

Answer: (A)

An amended preflight release is issued whenever the published release data changes in a way that affects what is authorized for the flight. The most common trigger is a change in equipment status defined by MEL or CDL. When a new deferral is added or an existing one is removed, the list of inoperative equipment and any related restrictions can change, so the release must be updated to reflect the current conditions. This keeps the crew, maintenance, and operations all operating from the same, accurate data and maintains regulatory compliance. Other situations like a longer delay or an aircraft swap may require updates, but they do not inherently alter the MEL/CDL status reflected on the release, and increasing dispatch fuel is a planning adjustment rather than a change to the equipment status on the release.