What you will know
Know what Section 2 asks a candidate to be able to do about airframes, systems, power plants and propulsion, and see which of those requirements the other lessons in this app already teach.
Before this lesson
- You know that the examinations are built on , so its sections are the syllabus rather than background reading. TP15263 area2
- You know that Section 2 applies to basic and advanced operations alike: every row's type-of-operation column reads "basic, advanced". TP15263 area2
How it works
1. How to read the section
Section 2 is a table of sample learning objectives grouped by category and topic. The categories are airframes; electrical systems; redundancies and critical items; the control station; data links; batteries; fuel systems; autopilots; payloads; propulsion; launch and recovery systems; maintenance records; and the instruments — magnetic compass, altimeter, airspeed indicator and inertial measurement unit. TP15263 area2
Read the objectives as things you must be able to do, because that is how they are written and how they are examined: "describe", "explain", "identify", "assess". TP15263 area2
Two structural facts save a reader time. The objectives are written once per category, on its first row, so a topic with a dash beside it is covered by the category's list rather than left out — the corpus notes this explicitly, because the source table has the same shape. TP15263 area2 And the topics are finer than the objectives: "Batteries" has six topics and one objective list. TP15263 area2
2. Airframes, electrical systems, and what the owner may do
The airframe objectives are about damage and repair authority: how a manufacturer distinguishes the work an owner may do from the work only an authorized repair facility may do, how to find the applicable manufacturer's guidelines, how to identify propeller or rotor damage, surface contamination, wiring damage and structural damage, and the parts of an airframe. TP15263 area2
The electrical objectives are component-level: typical electrical system components, the actions of a servo, the indications of a failed servo, and why components must be kept dry. TP15263 area2
Redundancy has one objective and it is a judgement rather than a list: state the value of redundancy in operating scenarios. TP15263 area2
3. The control station, and the datalink it depends on
The control station objective is orientation: the importance of pilot and antenna orientations in reference to the RPA. Its topics add software version control and flight simulation. TP15263 area2
The data link objectives are the operational ones: how to assess the radio frequency environment or conduct an RF sweep, the importance of radio line-of-sight, the importance of ground control station antenna placement, and the causes of lost link with methods of recovery. TP15263 area2
4. Batteries, fuel, and what a battery fire is not put out with
The battery objectives are the densest in the section: interpret maintenance log history; describe what affects capacity (age, history, charge status); assess voltages against discharge curves; state the regulations for carrying lithium-ion batteries on board a commercial flight; and describe the dangers of using water on a lithium battery fire. TP15263 area2
The fuel objectives cover different fuel systems and their hazards, assessing quantity and consumption under different flight conditions, and safe storage, handling and fuelling. TP15263 area2
5. Autopilots, payloads, propulsion, and launch and recovery
An autopilot is not only an autopilot: the objectives are the types of pilot intervention possible in flight, the pre-flight preparation for flight termination systems, the consequences of improper software version control, and updating verified firmware only from trusted sources. TP15263 area2
Payload has a single objective, and it is a boundary rather than a list: define what comprises the payload as against the rest of the system. TP15263 area2
Propulsion asks for the characteristics of different motor types, for 2-stroke and 4-stroke engines, and for the aircraft's behaviour after a propulsion system failure. Launch and recovery asks for the danger areas of a safety template and for different methods of recovering an RPA. TP15263 area2
6. Records, and the four instruments
The maintenance-record objectives are administrative and are examined as such: list the requirements for record-keeping, and give examples of tasks that should be independently verified. TP15263 area2
The instrument objectives are classic flight instruments applied to an RPA: the magnetic compass (magnetic against true north, and what affects its operation and reliability), the altimeter (the purpose of a barometric setting, a blocked static system, and the difference between GPS altitude and barometric altitude including converting GPS altitude to above sea level), the airspeed indicator (indicated against true airspeed, and a blocked pitot system), and the inertial measurement unit (what it is responsible for, and what makes it misbehave). TP15263 area2
Your checklist
You are ready for Section 2 questions when you can:
- Say who may repair what, and find the manufacturer's guidelines TP15263 area2
- Recognise propeller or rotor, wiring and structural damage, and surface contamination TP15263 area2
- Describe a servo's actions, and the indications of a failed one TP15263 area2
- State the value of redundancy TP15263 area2
- Explain why pilot and antenna orientation matter TP15263 area2
- Assess the RF environment, and name the causes of lost link with recovery methods TP15263 area2
- Read a discharge curve, and say why water on a lithium fire is dangerous TP15263 area2
- Explain an RPA's behaviour after a propulsion failure TP15263 area2
- Explain magnetic against true north, indicated against true airspeed, and GPS against barometric altitude TP15263 area2
Where people go wrong
| Symptom | Likely cause | What to do |
|---|---|---|
| A topic has a dash where the objectives should be | The source table prints the objectives cell once per category | Read the category's list, not the row TP15263 area2 |
| The topic label reads like two sentences run together | The source PDF's table cells merged during extraction, and the corpus keeps the fragment as it found it | Read the category and the objective, which are clean TP15263 area2 |
| A question asks which objective covers a task | The examination is checking that you know the requirement, not that you can perform it | Match the task to the objective wording TP15263 area2 |
| You looked for the fire-safety material behind the battery objective | The syllabus states the requirement; it is not a textbook | Learn the requirement here, and take the subject to the manufacturer's documentation TP15263 area2 |
Test yourself
Practise: Handling/care/securing Practise: Speed controllers, batteries, etc.) Typical electrical system components (motors, electronic Practise: Risks of flying with inoperative systems Practise: Frequency bands (licensed and unlicensed) Practise: Discharge curves Practise: Types and hazards Practise: Outrunner) Types of electric motors (brush, brushless, inrunner, and Practise: Principles of operation Practise: Orientation
Sources
- , Section 2 — RPA airframes, power plants, propulsion and systems (the sample learning objectives table)
What this lesson does not cover
The corpus holds the requirements and not the teaching material behind them. says a candidate must be able to describe the dangers of using water on a lithium battery fire; it does not contain the fire-safety chapter that explains them, and neither does this app. Where an objective overlaps material the corpus does hold, the lesson that teaches it is worth reading next — the payload boundary is in the payload lesson, the radio environment and lost link are in the radio lessons, and the aerodrome and airspace material that Section 2's instruments feed into is in the aerodromes and airspace lessons. This lesson states what the section requires and does not pretend to be the reference it points at.