Demo: PPL/H

Visibility is transmitted in meters when it is up to 5 km. This is important for precise reporting in low visibility. For visibility greater than 5 km, kilometers are usually used, so the other answers are incorrect.

Visibility is transmitted in kilometers when it is greater than 5 km. If visibility is 5 km or less, it is given in meters. The other options are incorrect because they refer to the wrong threshold or unit.

Meteorological information is broadcasted on a VOLMET frequency. NOTAMS, current information, or navigational information are not provided there. VOLMET is dedicated to weather reports for pilots.

VOLMET is a radio service broadcasting current weather reports for airports during flight. GAMET and AIRMET provide area or warning info, METAR are individual reports but not broadcast as a radio service.

Transponder code 7600 indicates a radio failure. 7000 is for VFR flights, 7500 signals hijacking, and 7700 is for emergencies. Only 7600 specifically alerts ATC to a loss of radio communication.

'Transmitting blind' is correct because it is the standard phrase to indicate you are transmitting without knowing if you are heard. 'Blind', 'No reception', and 'Listen' are not standard ICAO phrases for this situation.

A blind transmission should be made on the current frequency, as other traffic is listening there. FIS, tower, or radar frequencies are not suitable because not all relevant pilots may be monitoring them.

A blind transmission should be made twice to ensure it is received. Once is too little, as the recipient might miss it. Three or four times are unnecessary and could clutter the frequency.

Transponder code 7600 is used for loss of radio communication to inform ATC of radio failure. Other codes are for emergencies (7700) or hijacking (7500). Flight into clouds does not require a special transponder code.

The correct answer is right because, in class D airspace, after a radio failure, you must continue according to your last clearance under VFR or exit the airspace by the shortest route. The other options mention incorrect altitudes or require standard routes, which are not required here.

Entry into class D airspace with radio failure is only allowed if approval has been granted beforehand. The other options are incorrect because being the destination or departure aerodrome, or the presence of other aircraft, does not permit entry without prior clearance.

'Pan Pan' is correct because it is the phrase repeated three times at the start of an urgency message. 'Mayday' is for distress, not urgency. 'Urgent' and 'Help' are not official international radio signals.

The correct answer is 'current frequency' because a distress call should first be made on the frequency you are already using. This ensures the responsible controller hears it. The other frequencies are only used if no contact exists on the current one.

The correct answer includes: nature of the problem, important info for support, pilot's intentions, position, heading, and altitude. This ensures effective assistance. Other options miss key elements like pilot's intentions or the nature of the problem.

7700 is the international transponder code for general emergencies. 7000 is for VFR flights, 7500 for hijacking, and 7600 for radio failure. Only 7700 alerts ATC to an emergency situation.

118.75 MHz is correct because VHF voice communication in aviation uses 118–137 MHz. 118.75 kHz and 327.25 kHz are in the long/medium wave range, and 327.25 MHz is outside the aviation VHF band.

The frequency range 118.000 to 136.975 MHz is in the VHF band. LF, MF, and HF are different bands not used for aviation voice communication.

The correct answer is 300,000 km/s because electromagnetic waves (like light) travel in a vacuum at about 300,000 kilometers per second. The other options in m/s or 123,000 are too low or in the wrong unit.

The correct answer is 30 minutes because an ATIS broadcast is typically valid for 30 minutes. 10, 45, and 60 minutes are either too short or too long and do not match the official standard.

'Caution wake turbulence' is correct because it directly warns about the risk of wake turbulence. The other options refer to jet blast, propwash, or are vague, and do not specifically address wake turbulence hazards.

The correct answer is: DEABC, "N", 2500 ft. It includes callsign, reporting point, and altitude—these are the key elements of a position report. The other options are incomplete, use incorrect formats, or lack necessary details.

Correct: statically stable and dynamically instable. The helicopter resists small changes (statically stable), but after a disturbance, it does not return to its original position and the deviation increases over time (dynamically instable). The other options do not match this behavior.

For flights over water where land cannot be reached in an emergency, life jackets or lifeboats must be available for all passengers. The other options are incorrect as they are not mandatory or relate to different emergencies.

Turns in climb should be avoided over villages because the aircraft is loudest at high power and steep angle. In descent, horizontal flight, or during approach, engine power is usually lower, so noise is less of a problem.

Pumping the throttle can let unburned fuel enter the intake, which may ignite and cause a carburettor fire. The other options do not describe the main risk of this action during engine start.