20 AFSB Interview Questions with Detailed Answers for Flying Branch Aspirants

If your dream is to wear the blue uniform and fly high with the Indian Air Force, the AFSB interview is one hurdle you must clear with confidence.

For Flying Branch aspirants, this isn’t just about telling the board who you are; it’s also about showing that you understand the basics of aviation, aircraft, and Air Force operations.

Don’t stress, you don’t have to be an aerospace engineer. You just need to cover the basics, and also how to put them into simple terms. Let’s go over 20 of the most asked questions, plus easy answers that will stick in your head, and which you can put your style on.

Why Flying Branch Questions Matter

The AFSB interview process is designed to assess candidates based on their chosen branch, educational qualifications, and specific application path. For flying branch candidates, interviewers expect a fundamental understanding of aeronautics, aircraft operations, and IAF fleet knowledge. All flying branch applicants must have completed Physics and Mathematics at the 10+2 level.

AFSB Flying Branch Questions & Answers

Aviation Physics & Aerodynamics

On what principle does an aircraft fly?

Aerodynamics, especially Bernoulli’s principle. The curved wing shape makes air move faster over the top, slower underneath, creating lift. Engines provide forward thrust.

Can you explain Bernoulli’s principle with an example?

Bernoulli’s principle says: when fluid (like air) moves faster, its pressure drops. Example: In a venturi tube, the narrow part makes air speed up, lowering pressure similar to over an aircraft wing.

How is buoyancy related to aircraft?

In air, buoyancy means displacing air downward equal to the aircraft’s weight every second. It’s part of how lift balances weight to keep a plane airborne.

What is a streamlined shape, and why is it important?

It’s a smooth shape that reduces drag (air resistance). Less drag = faster speed and better fuel efficiency. That’s why aircraft have sleek designs.

What’s the difference between knots, nautical miles, and Mach?

Knot = 1 nautical mile per hour

Nautical mile = 1.852 km

Mach = speed compared to sound (Mach 2 means twice the speed of sound)

Indian Air Force Aircraft Knowledge

What are the three sub-branches of the Flying Branch?

Fighters (combat missions), Helicopters (attack, rescue, and utility roles), and Transport aircraft (troop, cargo, and relief supply missions).

Name three helicopters used by the Indian Air Force.

Mi-17, Mi-35, and ALH Dhruv (Advanced Light Helicopter).

Which is the largest aircraft in the IAF?

Boeing C-17 Globemaster III. Before its induction, the Il-76 “Gajraj” was the largest.

Can you name five transport aircraft of the IAF?

C-130J Super Hercules, C-17 Globemaster, Il-76 Gajraj, An-32, and Il-78 refueller.

Name five fighter aircraft of the IAF.

Tejas, Su-30MKI, MiG-29, MiG-21 Bison, and Jaguar.

What is the most recent aircraft inducted into the IAF?

CASA C-295 (to replace AVRO transport aircraft). Before that, the indigenous Light Combat Aircraft Tejas joined the fleet, nicknamed The Flying Daggers.

Which aircraft have been added to the IAF’s vintage fleet?

The Dakota (Parashuram), restored and now flown at ceremonial events and airshows.

How does the Air Force utilise its aircraft when it is not engaged in combat?

When not engaged in hostilities, the Air Force participates in humanitarian and disaster relief operations, conducts joint training exercises with other militaries, and ultimately prepares for war.

In what capacity do aircraft play a role in the Indian Air Force?

An aircraft is a vital component of any air force. Providing air superiority to any country’s military is one of its primary functions. The aircraft of the Indian Air Force serve the same purpose – to defend the country’s borders and fight in wars.

Questions for NCC Candidates

What is the function of the black box in an aircraft?

The black box consists of the Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR). It stores critical flight information and crew communications to aid in accident investigations.

What is the role of flaps during takeoff and landing?

Flaps extend from the trailing edge of the wings to increase lift at lower speeds. They allow safer takeoff and landing by reducing stall speed and enabling steeper descents.

Define the service ceiling of an aircraft.

The service ceiling is the maximum altitude at which an aircraft can sustain level flight under standard conditions. Beyond this limit, it cannot maintain adequate climb performance.

What is the purpose of an Auxiliary Power Unit (APU)?

The APU is a small engine that provides electrical power and compressed air when the main engines are off. It is essential for starting engines, powering systems on the ground, and emergency backup.

What is the significance of winglets in modern aircraft?

Winglets reduce aerodynamic drag caused by wingtip vortices. They improve fuel efficiency, increase range, and enhance overall aircraft performance.

Differentiate between a turboprop and a jet engine.

A turboprop engine uses a turbine to drive a propeller, making it efficient at lower speeds and shorter runways. A jet engine produces thrust by expelling high-speed exhaust gases, suitable for higher speeds and altitudes.

Final Preparation Tips

If you don’t know, admit it, but keep curious.
Check out the latest IAF news.
Practice speaking out your answers; clarity matters more than speed.
Show confidence, good posture, and enthusiasm.

Remember, the board is not just looking for your knowledge, but also officer-like qualities: honesty, calmness, adaptability, and love for the service.

Walk into the AFSB interview with confidence; it’s not a trap, it’s simply a discussion to see if you’re ready to join the blue uniform family.