Destination — Page 267, Lesson 369

This is the index page of the book — it lists terms alphabetically and the page numbers where they appear. I’ll walk you through the entries under ‘D’ and the start of ‘E’ so you know what each term means and where it fits in your syllabus. Let’s start with Destination. That’s the airport you plan to land at — the end point of your flight. It’s listed on pages 36 and 107. Destination Alternate is a backup airport you can divert to if you cannot land at your destination. It’s covered on pages 4 and 36. Deviation Around Severe Weather — page 136 — refers to the procedure of altering your planned route to avoid hazardous weather like thunderstorms or severe turbulence. DH stands for Decision Height. That’s a critical altitude on an instrument approach — typically between 54 and 64 feet above the runway threshold, depending on the approach type. At DH, you must decide whether you have the required visual references to continue the landing or you must execute a missed approach. It appears on pages 54, 55, 60, 62, and 64. Difference Training — page 96 — is training required when you transition to a different variant of an aircraft type you’re already qualified on. For example, moving from one engine model to another on the same airframe. Dispatch — page 26 — is the process of releasing a flight for departure, ensuring it meets all regulatory and operational requirements. Ditching — page 203 — is an emergency landing on water. It’s a specific procedure with its own checklist and survival considerations. DME stands for Distance Measuring Equipment — page 82 — a radio navigation aid that gives you slant-range distance from the aircraft to a ground station. Doc 7030 — pages 82 and 119 — is an ICAO document that contains regional supplementary procedures for air navigation. It’s essentially the rulebook for specific regions beyond the standard Annexes. Downdraught — page 180 — is a downward current of air, often associated with thunderstorms or mountain waves, that can cause a sudden loss of altitude. Drizzle — page 146 — is light, uniform precipitation consisting of very small water droplets. It’s a specific weather phenomenon that affects visibility and runway conditions. Dry Lease — page 17 — is an aircraft leasing arrangement where the lessor provides only the aircraft, without crew, maintenance, or insurance. The lessee takes full operational responsibility. Dry Runway — page 233 — is a runway surface that is not contaminated by water, snow, slush, or ice. It provides the best braking action. Dry Snow — page 147 — is snow with low moisture content. It’s less dense than wet snow and behaves differently in terms of accumulation and braking performance. Dump Fuel — page 213 — is the system or procedure for jettisoning fuel in flight, usually to reduce landing weight below the maximum allowable for a safe landing. Duty — pages 105 and 107 — refers to the period during which a crew member is required to perform tasks for the operator, including flight time and ground duties. Duty Period — page 106 — is the specific time from when a crew member reports for duty until they are released from all duties. It’s a key concept in fatigue management regulations. Now moving into the E section. EASA Part 145 — page 23 — is the European Aviation Safety Agency regulation that sets the requirements for maintenance organisations. It covers approval, quality systems, and personnel standards. ELT stands for Emergency Locator Transmitter — pages 80 and 87 — a battery-powered transmitter that automatically activates on impact or manually, sending a distress signal on 121.5 MHz and 406 MHz to aid search and rescue. Emergency — page 203 — is a situation that requires immediate action to protect life or the aircraft, such as engine failure, fire, or depressurisation. Emergency and Safety Equipment — page 96 — covers all the gear carried on board for emergencies: life vests, life rafts, fire extinguishers, oxygen masks, first aid kits, and so on. Emergency and Safety Equipment Training — page 97 — is the mandatory training for crew on how to use that equipment correctly. Emergency Lighting — page 86 — is the independent lighting system that activates when normal electrical power fails, illuminating exits, aisles, and floor paths to help passengers evacuate. Emergency Locator Transmitters — again, pages 80 and 87 — we already covered that. Emergency Procedures — page 96 — are the standardised actions and checklists for handling abnormal or emergency situations. Endangering Safety — page 14 — refers to any action or omission that creates a risk to the safety of the aircraft, persons, or property. It’s a serious regulatory offence. English Language — page 28 — refers to the ICAO language proficiency requirement. All pilots and air traffic controllers must demonstrate the ability to speak and understand English to at least Operational Level 4. Enhanced Vision System (EVS) — page 57 — is a system that uses sensors like infrared or millimetre-wave radar to display a real-time image of the outside scene on a head-up display, helping the pilot see in low visibility conditions. That covers the ‘D’ entries and the start of ‘E’ from this index. Each term will be explained in full detail on the pages listed.