DGCA Air Regulations: Special Procedures & Operational Hazards Questions

Correct answer: B. Heavy, clean configuration and slow speed

Wake turbulence wingtip vortices) is GREATEST when the aircraft is: HEAVY more weight = more lift needed = stronger vortex), CLEAN configuration flaps up, gear up = less drag = vortices persist longer), and SLOW high angle of attack = stronger vortex generation). Landing config with flaps actually reduces vortex strength. Heavy + Clean + Slow = worst wake!

Correct answer: B. Cold clouds only

Hailstones form only in COLD CLOUDS where supercooled water d roplets exist above the freezing level. They need strong updrafts found in Cumulonimbus) to keep the hailstone aloft while it grows layer by layer. Warm clouds below the freezing level) cannot produce hail. The bigger the CB and stronger the updraft, the larger the hailstones!

Correct answer: C. 2 minutes

HEAVY leading, MEDIUM following on the same runway = 2 MINUTES minimum separation. This is per ICAO wake turbulence standards. The A380-800 super heavy) leading a MEDIUM needs 3 minutes. HEAVY leading a LIGHT also needs 2 minutes. Remember: most combinations are 2 minutes, but A380 leading smaller aircraft is 3 minutes!

Correct answer: B. Constant manoeuvring speed Va)

In severe turbulence, maintain manoeuvring speed Va) — NOT altitude. Trying to hold altitude in severe turbulence means fighting the up and down drafts, which can overstress the aircraft. Instead, hold Va and let the altitude fluctuate. Va is the speed below which the aircraft will stall before structural damage occurs.

Correct answer: A. Maintain speed

In severe turbulence, the most important thing to protect is the aircraft structure — and that means controlling your speed. You must slow down to Va manoeuvring speed) and maintain that speed. If you try to maintain altitude, you will pull hard on the controls which creates extra G-force and could damage or break the aircraft. Let the altitude move a little — the aircraft can handle that. Speed is what you must control.

Correct answer: A. Land at the nearest suitable aerodrome maintaining VMC and inform ATC

If your radio fails while flying IFR but you can see clearly outside VMC), the rule is: squawk 7600 on your transponder to tell ATC your radio is broken, then maintain VMC conditions and land at the nearest suitable aerodrome as soon as possible — and inform ATC when you land. You do not just continue to destination because ATC has lost contact with you and needs to know where you are going.

Correct answer: C. Executing a climbing turn of 90 degrees or more without crossing the line of flight of the intercepted aircraft.

When a military or police aircraft intercepts you and then wants to say okay, you are free to go, the signal is a climbing turn of 90 degrees or more — turning away from your path without crossing in front of you. Think of it like a police officer stepping aside and waving you through. They peel away dramatically to one side, and that means you may proceed.

Correct answer: B. Constant maneuvering speed Va).

When in severe turbulence, your one job is to protect the aircraft from structural damage. You do this by slowing to Va — the manoeuvring speed — and holding it there. Va is specially calculated as the speed at which the aircraft can handle the maximum gust loads without breaking. Do NOT fight to hold altitude — pulling hard on controls in turbulence adds dangerous G-loads. Speed saves the aircraft, altitude does not matter as much.

Correct answer: C. Revise clearance and wait

The North Atlantic is some of the most congested oceanic airspace in the world, with many aircraft flying parallel tracks. If you cannot maintain your assigned clearance wrong altitude, speed, or route), you must immediately request a revised clearance from ATC and hold your current position as best you can while waiting. You do not just turn back — that could cause conflicts with other traffic. Communicate, revise, coordinate.

Correct answer: B. Cold clouds only

Hailstones form in cold clouds only. These clouds have strong updrafts that carry water droplets high into the colder parts, where they freeze into ice. As they get pushed up and down, they collect more layers of ice until they become heavy and fall as hail. Some might think hail can form in warm clouds, but that's not true; warm clouds usually produce rain instead.

Correct answer: B. Can occur at any altitude in both the vertical and horizontal planes

Wind shear is not limited to any particular altitude or direction. It can happen at ANY altitude — near the ground low-level wind shear near thunderstorms), at cruise altitude clear air turbulence/jet stream boundaries), or anywhere in between. It can be vertical updrafts/downdrafts) or horizontal sudden change in wind speed or direction as you fly). Wind shear is an everywhere, any-altitude hazard.

Correct answer: B. Airspeed decreases and aircraft may sink

When you fly into an area where the headwind is decreasing headwind shear), the wind helping push air over your wings gets weaker. This causes Indicated Airspeed to D ROP suddenly — like someone pulled the wind away from your wings. With less lift, the aircraft starts to sink. This is extremely dangerous on approach to land because the aircraft can d rop below the glide path and hit the ground short of the runway. Full power and pitch up immediately!