Near-Miss Understandings

Monday, April 20, 2020 at 01:40 PM ET

Verified

“Join the final approach course inbound” means you fly the course inbound and maintain your assigned altitude … not suddenly make a 180 degree into the face of the guy following you.

Key Takeaways:

Pilots frequently misinterpret ATC instructions, even when read back correctly, leading to dangerous situations due to assumptions or unfamiliarity with aviation phraseology.
Common misunderstandings include instructions for joining approach courses, the implications of "cleared approach" regarding altitude restrictions, procedure turns, and appropriate interpretation of speed assignments.
For safety and regulatory compliance, pilots are mandated to immediately request clarification from ATC if they are uncertain about any instruction, rather than making potentially hazardous assumptions.

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Sequences don’t come much easier. A VFR Mooney and a VFR Cherokee both requested a practice RNAV approach. They were the same distance from the same initial approach fix (IAF), and the Mooney was 50 knots faster than the Cherokee.

I gave the Mooney direct to the IAF. The slower Cherokee got a few vectors to fall in trail, then also got direct to the IAF. With all the sequences I build every day as a controller, this was a no-brainer. Fast guy in front. Slower guy in the back.