PLT431: Operating Near Other Aircraft
What code PLT431 covers, why the FAA tests it, and how to study Operating Near Other Aircraft before your checkride.
Recall regulations - operating near other aircraft
What this means for your checkride
Under 91.111 you may not operate so close to another aircraft as to create a collision hazard, may not fly formation except by arrangement with the other pilots, and may never fly formation while carrying passengers for hire. With the right-of-way and overtaking rules, this keeps aircraft safely separated.
Proximity and formation flight are collision risks, so the FAA tests the prohibitions in 91.111.
Pilots think casual formation flying is fine. It is allowed only by prior arrangement among the pilots, and never with passengers for hire.
Where to study it
A code on your test report is an area of deficiency. An authorized instructor must review it with you and endorse that review before you take the practical test, and the examiner may revisit it during the oral. Study it until you can explain it out loud, not just recognize the answer.