Let’s pick this up right where the material leaves off — Page 511, Lesson 689

Let’s pick this up right where the material leaves off. The first line you see — “is below 1500 ft or the highest MSA (whichever is the higher)” — is the tail end of a rule about circling approach minima. I want to make sure you understand that phrase before we move on, because it sets up the question that follows. That phrase is about the circling approach — the manoeuvre where you fly the aircraft visually around the airfield to land on a runway that isn’t aligned with your instrument approach. The rule is telling you the minimum altitude you may descend to during that circling manoeuvre. You may not go below 1500 feet above the aerodrome, or below the highest MSA — and here’s the key — you take whichever is the higher of the two. MSA stands for Minimum Sector Altitude, the lowest altitude that gives you safe terrain clearance within a sector around the aerodrome. So if the highest MSA is, say, 2000 feet, you may not descend below 2000 feet, even though 1500 feet would otherwise be allowed. If the highest MSA is only 1200 feet, then the 1500-foot figure governs. You always use the higher value. That is the floor for your circling approach. Now, question 90 asks: What action should be taken if contact is lost with the runway during a circling approach? Let’s think about what’s happening. You’re circling visually, you’ve lost sight of the runway — you no longer have the visual reference you need to continue the manoeuvre safely. The correct action is to initiate a missed approach. That is option c. You do not descend to Decision Height to try to regain sight — that would take you lower into a situation where you have no visual reference, which is unsafe. You do not land on the instrument runway — you may not be properly aligned or configured for it. And you do not return to the FAF — the Final Approach Fix — because the missed approach procedure is the standard, published escape. So the answer is c: initiate a missed approach. Now question 91 is a definition question, and it’s a classic one. It asks: The State of registration is — and you have four options. The State of registration is the State where the aircraft is currently registered. That is option b. Let me be precise about why. The State of registration is not where the aircraft was first registered — that’s a historical fact, not a current legal status. It is not where the aircraft was finally assembled — that’s the State of manufacture, a different concept. And it is not the State of the owner of the aircraft — the owner may live in one country while the aircraft is registered in another. The registration is a current, legal status, and the State of registration is the one in whose register the aircraft currently appears. That State has jurisdiction over the aircraft and issues its certificate of registration. So the answer is b: the State where the aircraft is currently registered. Let me tie these two together for you. The first question is operational — it’s about a specific, safety-critical decision in the circling approach. The second is regulatory — it’s about a legal definition that determines which State’s laws apply to the aircraft. Both are the kind of thing you’ll be tested on, and both matter in real operations. The circling approach rule gives you a hard altitude floor, and the missed approach is your mandatory escape when you lose visual contact. The State of registration is a definition you must know cold, because it determines jurisdiction.