Aircraft Instruments (Checks/Procedures) MCQs Quiz | Class 9
This quiz is for Class 9 students studying NCC (Code 076), focusing on Air Force Unit 6: Aircraft Particulars. It covers essential topics like aircraft instruments, basic pre-flight checks, and procedural awareness. Answer all the questions and click ‘Submit Quiz’ to see your score and download a PDF of your answers.
Understanding Aircraft Instruments and Procedures
Aircraft instruments are vital tools that provide pilots with critical information about the aircraft’s flight status, engine performance, and position. Understanding how to read these instruments and perform basic checks is a fundamental skill for any aspiring aviator. This knowledge ensures flight safety and efficient operation of the aircraft.
Key Flight Instruments: The “Six Pack”
Most training aircraft are equipped with a standard layout of six primary flight instruments, often called the “six-pack”. These are essential for flying, especially when visual references outside the cockpit are limited.
| Instrument | Function |
|---|---|
| Airspeed Indicator (ASI) | Measures the aircraft’s speed relative to the surrounding air. |
| Attitude Indicator (AI) | Shows the aircraft’s orientation (pitch and bank) relative to the horizon. |
| Altimeter | Measures the aircraft’s altitude (height) above a specific reference level, usually mean sea level. |
| Turn Coordinator | Indicates the rate and quality of a turn. |
| Heading Indicator (HI) | Displays the aircraft’s heading or direction of flight, like a compass. |
| Vertical Speed Indicator (VSI) | Shows the rate at which the aircraft is climbing or descending. |
Engine and Navigation Instruments
- Engine Instruments: These monitor the health and performance of the engine. Key instruments include the Tachometer (measures engine RPM), Oil Pressure Gauge, and Oil Temperature Gauge.
- Navigation Instruments: These help the pilot determine their position and follow a planned route. They range from the basic Magnetic Compass to modern GPS (Global Positioning System) units.
Pre-Flight Checks and Procedures
Before every flight, pilots conduct a series of checks to ensure the aircraft is airworthy. This is a critical safety procedure.
- Walk-Around Inspection: A physical inspection of the aircraft’s exterior, checking for damage, leaks, and ensuring components like control surfaces (ailerons, rudder, elevator) are secure and move freely.
- Pitot Tube Check: The pitot tube is a small sensor that measures airspeed. It must be checked to ensure it is clear of obstructions like insects or ice.
- Cockpit Checks: Inside the cockpit, the pilot checks that all instruments are functioning, controls are responsive, and fuel levels are adequate for the intended flight. This is often guided by a checklist.
Quick Revision Points
- The Altimeter measures altitude (height).
- The Attitude Indicator shows the aircraft’s relation to the horizon.
- The Airspeed Indicator shows speed through the air.
- The red line on the Airspeed Indicator marks the “Never Exceed Speed” (Vne).
- Pre-flight checks are mandatory for safety.
- A blocked pitot tube will cause the Airspeed Indicator to give false readings.
Extra Practice Questions
- What is the primary difference between a Heading Indicator and a Magnetic Compass?
- Why is it important to check the freedom of movement of control surfaces like ailerons and the rudder before a flight?
- If an aircraft is climbing at 500 feet per minute, which instrument would display this information?
- What does RPM stand for, and which instrument measures it?
- Describe the purpose of a pre-flight “walk-around” inspection.
