Which publication may announce route closures?

Which publication may announce route closures?

• A. AIP SUP
• B. AIP NOTAM
• C. AIP ENR
• D. AIP VOL II

Answer: (A)

Route changes to the published airways are handled through the AIP framework, with in-between updates published as amendments in the AIP Supplement. This publication is specifically meant to communicate changes to the AIP content between full editions, such as a route closure. NOTAMs are used for urgent, time-critical notices about temporary changes affecting flight operations, but the formal announcement of a route closure within the published AIP material comes via the AIP Supplement. After the supplement takes effect, the updated en-route information appears in the AIP ENR and the corresponding charts in VOL II reflect the new routing. Hence, route closures are announced in the AIP Supplement.

Route changes to the published airways are handled through the AIP framework, with in-between updates published as amendments in the AIP Supplement. This publication is specifically meant to communicate changes to the AIP content between full editions, such as a route closure. NOTAMs are used for urgent, time-critical notices about temporary changes affecting flight operations, but the formal announcement of a route closure within the published AIP material comes via the AIP Supplement. After the supplement takes effect, the updated en-route information appears in the AIP ENR and the corresponding charts in VOL II reflect the new routing. Hence, route closures are announced in the AIP Supplement.