I see you've turned to page 47 of the Operational Procedures manual — Page 267, Lesson 365

I see you've turned to page 47 of the Operational Procedures manual. This is the index page — it lists topics and their page numbers so you can quickly find what you need. Let me walk you through the entries that appear here. First, we have Aircraft Security Check on page 197. That's a specific procedure you'll learn about later in the course. Next, Air Operator’s Certificate (AOC) appears on pages 3, 14, 23, 25, and 219. The AOC is the certificate issued by a state's aviation authority — in our case, typically the DGCA — that authorises an operator to conduct commercial air transport operations. You'll see it referenced throughout the book. Airspace Class is on page 66. This refers to the classification of airspace from Class A through G, each with different rules for entry, equipment, and air traffic control service. Air Traffic Control on page 35 — that's the service provided by ground-based controllers to prevent collisions and expedite traffic flow. Air Traffic Incidents on page 47 — that's right here on this page. These are occurrences involving aircraft that have the potential to affect safety, such as near collisions or procedural deviations. Air Traffic Service Unit also on page 47 — that's the unit providing air traffic control, flight information, or alerting services. Often abbreviated as ATSU. Airworthy on page 44 — this means the aircraft meets its type design and is in a condition for safe operation. It's a legal and technical status. Alternate on page 36 — that's an alternate aerodrome, a backup airport you can divert to if you can't land at your destination. Alternate Aerodromes on page 4 — the broader category of alternate airports, including take-off, en-route, and destination alternates. Altitude Alerting System on page 78 — a system that warns the flight crew when the aircraft is approaching or deviating from a selected altitude. AMSL on page 66 — stands for Above Mean Sea Level, the standard reference for altitude measurement. Annex 6 Part 1 on page 3 — that's the ICAO Annex covering international commercial air transport operations. It's the foundation document for many of our regulations. Anti-icing on pages 146, 147, and 148 — systems that prevent ice from forming on critical surfaces like wings, engines, and probes. AOC on pages 17, 18, 25, 28, 40, 105, and 120 — that's the same Air Operator's Certificate we saw earlier. AOM on page 38 — Aircraft Operating Manual, the manufacturer's document containing all procedures, limitations, and performance data for a specific aircraft type. Approved One-engine-inoperative Cruise Speed on page 26 — the speed at which the aircraft can maintain level flight on one engine, approved by the authority for your specific operation. APV on page 62 — Approach Procedure with Vertical guidance, a type of instrument approach that provides both lateral and vertical guidance without requiring a full Instrument Landing System. Aquaplaning (Hydroplaning) on page 233 — when a layer of water builds up between the tyres and the runway surface, causing loss of braking and directional control. Area Navigation Operations (RNAV) on page 25 — navigation that allows aircraft to fly any desired flight path within the coverage of ground- or space-based navigation aids, rather than being limited to straight lines between ground stations. A Single Day Free of Duty on page 106 — a regulatory requirement in flight time limitations giving crew at least one full calendar day without any duty. ATC System Loop Errors on pages 134 and 138 — errors that occur within the air traffic control system loop, such as miscommunication between controller and pilot, or within the controller's own procedures. ATPL (A) on pages 93 and 94 — Airline Transport Pilot Licence (Aeroplane), the highest level of aircraft pilot licence, required to act as pilot-in-command in commercial air transport. ATS Flight Plan on pages 15 and 45 — Air Traffic Services Flight Plan, the document filed with ATC specifying the aircraft's intended route, altitude, and timing. Audio Selector Panel on page 82 — the panel that lets you select which radio or navigation audio source you hear in your headset. Augmented Flight Crew on pages 105 and 107 — a flight crew that includes more than the minimum required pilots, typically for ultra-long-haul flights, allowing for in-flight rest. Authorised Aerodromes on page 35 — aerodromes that the operator has been specifically approved to use in their operations manual. Authority of the Commander on page 14 — the legal authority and responsibility of the pilot-in-command for the safety of the aircraft, passengers, and crew. Finally, BCU — that's cut off here, but it likely stands for Brake Control Unit, a component of the aircraft's braking system. You'll find it on the page referenced when you look it up. That's the full index page for page 47. These are all topics we'll cover in detail as we go through the course.