You'll see OCA listed with page references to 120, 122, 124, 131, 132, 134… — Page 269, Lesson 378

This is the index section of your Operational Procedures manual. I want to walk you through the entries under the letters O and P, because these are the terms you'll need to be able to find quickly when you're studying or referencing the book. Let's start with the O entries. You'll see OCA listed with page references to 120, 122, 124, 131, 132, 134, and 135. OCA stands for Obstacle Clearance Altitude or Obstacle Clearance Height, depending on context — it's the minimum altitude or height above the ground that ensures you clear all obstacles in the approach or departure path. The index tells you where to find the detailed discussion. Next is Occurrence Reporting on page 46. This is the formal system for reporting any safety-related events, incidents, or hazards during flight operations. It's a key part of your safety management responsibilities. Then we have Oceanic Area Control Centres on page 120. These are the air traffic control facilities that manage aircraft flying over large ocean areas where radar coverage isn't available. Closely related is the Oceanic Control Area — also on page 120 — which is the airspace volume over the ocean where these centres provide services. You'll see OCH/OCL listed with pages 61 and 62. OCH stands for Obstacle Clearance Height, and OCL stands for Obstacle Clearance Limit. These are the specific height or limit values used in instrument approach procedures to ensure you stay clear of obstacles. OFP appears on pages 15, 16, 35, 44, and 102. OFP stands for Operational Flight Plan — the detailed document you use to plan fuel, route, time, and alternates for each flight. It's a core operational document. Next is One-engine-inoperative Cruise Speed on pages 35 and 36. This is the speed you fly when an engine has failed, optimized for the best performance or range with the remaining engine. Operating Crew Member on page 106 refers to any crew member who is on duty and performing operational tasks during the flight. Operating Manual on page 73 is the manufacturer's manual for the specific aircraft type, containing normal, abnormal, and emergency procedures. Operating Procedures on page 145 covers the standard procedures you follow during all phases of flight. Then you have Operational Flight Plan (OFP) again, with expanded page references to 15, 35, 36, 44, 102, and 103 — reinforcing that this is a major topic. Operations Manual appears on pages 13, 14, 15, 27, 28, 37, 45, 54, 60, 93, 94, 96, 98, 99, 100, 102, 147, 203, and 205. This is the airline's own manual that contains company policies, standard operating procedures, and operational instructions. It's distinct from the manufacturer's Operating Manual. Operations Personnel on page 28 refers to the ground staff who support flight operations, such as dispatchers and load controllers. Operator Proficiency Check on pages 93, 96, and 98 is the periodic check you must pass to demonstrate you remain competent to operate the aircraft. It's often abbreviated as OPC. Ops Manual on page 40 is just a shorthand for the Operations Manual. Organized Track System (OTS) appears on pages 122 and 123. This is the system of predefined routes across the North Atlantic that changes daily based on wind and traffic. The abbreviation OTS is also listed on pages 122, 123, 124, 125, 134, and 135. Overheated Brakes on page 164 is a procedure you need to know for handling brake fires or excessive heat after landing. Oxygen Equipment on page 44 covers the aircraft's oxygen systems, including masks and supply. Now moving to the P entries. PA on page 81 stands for Public Address system — the cabin announcement system. Package on page 220 likely refers to cargo or baggage handling. PAR on page 62 stands for Precision Approach Radar — a ground-based radar system that gives you precise guidance during an approach. Part - 145 on page 29 refers to the maintenance organization approval under EASA regulations — the rules for approved maintenance organizations. Passenger Briefing on pages 44 and 204 is the safety briefing you must give to passengers before departure. Passenger Seating on page 44 covers the rules for where passengers can sit, including weight and balance considerations. PBE on pages 86 and 163 stands for Protective Breathing Equipment — the smoke hood or mask used by crew in a smoke or fume event. Performance Class A on page 40 is the highest performance category for multi-engine aircraft, meaning you can continue the takeoff safely after an engine failure. Performance Class B or C on page 41 are lower performance categories, typically for lighter aircraft. Person In Custody on page 43 covers procedures for carrying a prisoner or someone under legal restraint. Persons with Reduced Mobility on page 42 refers to passengers who need special assistance, such as wheelchair users. PIC on page 93 stands for Pilot in Command — the pilot ultimately responsible for the flight. The full term Pilot in Command (PIC) is on pages 3 and 93. Polar Navigation on page 113 covers the special procedures for flying in high-latitude polar regions, where magnetic compasses are unreliable. Portable Electronic Devices on page 14 covers the rules for items like phones, tablets, and laptops during flight. Finally, Position on page 133 likely refers to aircraft position reporting or position in the context of navigation. These are the key terms under O and P that you'll need to locate in your manual. Each one has a specific meaning and operational significance that we'll cover in detail when we reach those pages.