Summary of Change.
Volume 3, Chapter 18, Section 4, Part B Operations
Specifications—En Route Authorizations and Limitations.
Explanation of Policy Changes. This change
incorporates new information into
Volume 3, Chapter 18, Section 4, OpSpec B049,
to include updated guidance that permits all operators conducting air tours
in the Grand Canyon National Park-Special Flight Rules Area (GCNP SFRA) to apply
Quiet Technology (QT) seasonal relief in the first quarter of each calendar