Upon completion of Areas 5-8, which altitude should you descend to before transitioning under adjacent Mustang areas to intercept arrival to KNGP?

Upon completion of Areas 5-8, which altitude should you descend to before transitioning under adjacent Mustang areas to intercept arrival to KNGP?

• A. 5,500' MSL
• B. 5,000' MSL
• C. 4,500' MSL
• D. 4,000' MSL

Answer: (C)

This tests using a published step-down altitude to transition under adjacent airspace and line up with an arrival. Four thousand five hundred feet MSL is the designated level for Areas 5–8 when routing under Mustang airspace toward KNGP. This altitude places you in the correct vertical window to intercept the KNGP arrival, providing adequate obstacle clearance and separation from traffic in the Mustang areas while keeping the intercept timing on the intended path. Going higher would leave you too elevated to meet the published intercept point without additional descent, risking sequencing issues or spacing problems. Going lower could place you below safe margins for that transition, potentially complicating clearance or the required arrival path. So, descending to 4,500 feet MSL best supports a smooth, safe transition and timely intercept of the KNGP arrival.

This tests using a published step-down altitude to transition under adjacent airspace and line up with an arrival. Four thousand five hundred feet MSL is the designated level for Areas 5–8 when routing under Mustang airspace toward KNGP. This altitude places you in the correct vertical window to intercept the KNGP arrival, providing adequate obstacle clearance and separation from traffic in the Mustang areas while keeping the intercept timing on the intended path.

Going higher would leave you too elevated to meet the published intercept point without additional descent, risking sequencing issues or spacing problems. Going lower could place you below safe margins for that transition, potentially complicating clearance or the required arrival path. So, descending to 4,500 feet MSL best supports a smooth, safe transition and timely intercept of the KNGP arrival.