u/VT-SKY

📢 DGCA Examination june Attempt Notification Out!

DGCA has officially announced the AME, FC & RTR (Restricted) License Examination – Regular Session 02 of 2026.

🗓 Exam Dates: 16th June 2026 to 20th June 2026

📝 Application Window: 12th May 2026 to 18th May 2026

🌐 Apply through DGCA Pariksha Portal

Candidates are advised to carefully read all instructions and regularly check the notice board for updates.

✈️ Best wishes to all aspiring aviation professionals!

Mothers are the true navigators who guide us through every turbulence with love and strength. ✈️❤️

📢 NIOS Portal Open for Admission & Improvement!

Students who want to:

✔ Improve their marks

✔ Clear failed subjects

✔ Complete studies through National Institute of Open Schooling (NIOS)

can now apply!

💯 Genuine guidance

💰 Reasonable charges

📩 Interested students can DM for complete assistance.

VT-SKY

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• Static Pressure: This is the pressure exerted on an object when it is stationary, simply due to the weight of the air column above it (virtue of height). Remember the standard lapse rate: atmospheric (static) pressure decreases by roughly 1 hPa for every 30 feet you climb.

• Dynamic Pressure: Also known as impact pressure, this is exerted by virtue of the aircraft's motion through the air. The formula is 1/2 Rho V² (using True Airspeed). While no single instrument measures dynamic pressure entirely on its own, your Airspeed Indicator relies on this principle to give you a reading.

Measuring the Atmosphere

To measure static pressure, we rely on a few key instruments:

1. Mercury Barometers

2. Aneroid Barometers

3. Barographs

The Importance of Pressure Tendency

Meteorologists use barographs specifically to measure pressure tendency—the rise and fall of pressure over a given time. It is a vital weather forecasting tool.

Key takeaway for your exams: Cold air is denser than warm air. Because of this density difference, pressure will fall much faster with height in a cold area compared to a warm area.

VT-SKY

👨🏻‍✈️VT-SKY EXPLAINED

1. What is an APU?

• Definition: A small, self-contained gas turbine engine.

• Location: Typically housed in the extreme rear of the aircraft (the tail cone).

• Purpose: Allows the aircraft to operate autonomously without needing the main engines running or relying on external airport ground power.

2. Core Functions

• Electrical Power: Generates electricity for cockpit instruments, cabin lighting, onboard computers, and galley equipment.

• Pneumatic Power: Supplies high-pressure "bleed air" to run the aircraft's air conditioning and heating systems.

• Engine Starting: Provides the crucial blast of compressed air needed to spool up and start the massive main engines.

3. When is it Used?

• At the Gate: Keeps the cabin comfortable and systems powered during passenger boarding and deplaning.

• Pushback & Startup: Actively used to start the main engines right before the aircraft begins to taxi.

🛫VT-SKY

Relationship Between Pressure and Altitude

As an aircraft climbs higher, air pressure decreases because there is less air above us.

1. Pressure Decreases With Height

At sea level, pressure is highest (about 1013 hPa).

As altitude increases, pressure falls rapidly at first, then more slowly.

At around 6 km, pressure becomes almost half of sea level.

At 100 km, pressure is nearly zero (vacuum).

2. Rate of Pressure Change

Pressure does not decrease equally at all heights:

1 hPa ≈ Height Change

Sea Level-27 ft

2,000 ft-30 ft

20,000 ft-50 ft

40,000 ft-100 ft

This means: At higher altitudes, a small pressure change gives a bigger height change.

3. Effect of Temperature (ISA Rule)

Warm air → Height difference becomes more

Cold air → Height difference becomes less

So, temperature affects altimeter accuracy.

4. Why This Is Important for Pilots

✔ Helps in altimeter setting (QNH/QFE)

✔ Ensures safe vertical separation

✔ Important for approach and landing

✔ Helps avoid Controlled Flight Into Terrain (CFIT)

🚨 BIG UPDATE FOR PILOT ASPIRANTS ✈️

The Directorate General of Civil Aviation (DGCA) has introduced AUTO-GENERATION of Computer Numbers for Flight Crew (FC) candidates!

✅ What’s new?

Now, candidates from ALL education boards (not just CBSE/ICSE/Maharashtra Board) can get their Computer Number auto-generated — provided their data is available on DigiLocker.

📅 Effective from: 27 April 2026

⚠️ Important Points:

• Must be an Indian national

• Aadhaar details must match DigiLocker data

• Your details (Name, DOB, Marks, etc.) will be auto-fetched

• Photo should match DigiLocker (Aadhaar) by at least 80%

• Any mismatch = Computer Number may not be generated

📌 Tip: Make sure all your DigiLocker documents are correct before applying to avoid rejection.

This update will make the process faster & smoother for pilot aspirants 🚀

— Team VTSky