Straight-in minimums for the LDA will be published if the offset from the runway centerline is less than or equal to how many degrees?

Straight-in minimums for the LDA will be published if the offset from the runway centerline is less than or equal to how many degrees?

• A. 15 degrees
• B. 30 degrees
• C. 45 degrees
• D. 60 degrees

Answer: (B)

The concept here is how far off the final approach can be from the runway centerline while still allowing a straight-in minimum to be published. For an LDA, if the approach course is within 30 degrees of the runway centerline, the alignment is close enough to meet obstacle clearance and descent requirements to publish straight-in minimums. When the offset exceeds 30 degrees, the path becomes too offset to guarantee a safe straight-in procedure, so only circling minima are typically published. So the maximum offset for publishing straight-in minima is 30 degrees. Note that offsets smaller than that, like 15 degrees, would also qualify, while larger offsets, such as 45 or 60 degrees, would not.

The concept here is how far off the final approach can be from the runway centerline while still allowing a straight-in minimum to be published. For an LDA, if the approach course is within 30 degrees of the runway centerline, the alignment is close enough to meet obstacle clearance and descent requirements to publish straight-in minimums. When the offset exceeds 30 degrees, the path becomes too offset to guarantee a safe straight-in procedure, so only circling minima are typically published. So the maximum offset for publishing straight-in minima is 30 degrees. Note that offsets smaller than that, like 15 degrees, would also qualify, while larger offsets, such as 45 or 60 degrees, would not.