Phrases & Expressions

To set the transponder to code 7500 to show unlawful interference, such as a hijacking.

• An aircraft suddenly squawked 7500.
• The crew squawked 7500 to warn controllers of unlawful interference.

Protection for those who face serious harm but don't qualify for refugee status.

• He applied for subsidiary protection due to the conflict.
• The court granted subsidiary protection to the applicant.

Entering Instrument Meteorological Conditions while flying under Visual Flight Rules.

• VFR into IMC is extremely dangerous.
• The pilot realized he was flying VFR into IMC.

In US procedures, an IFR clearance that lets a pilot fly at a chosen VFR altitude above a cloud layer.

• The pilot requested to fly VFR on top due to the cloud cover.
• VFR on top offers a clear view above the clouds.

The regulatory requirement that aircraft must broadcast ADS-B out by a stated date.

• The European ADS-B mandate caught some older operators off guard.
• An aircraft non-compliant with the ADS-B mandate may not enter affected airspace.

At the moment when something begins.

• At the onset of the illness, symptoms were mild.
• At the onset of winter, the weather changed.

Permission granted by air traffic control to begin an approach to land.

• You are cleared for approach runway 27.
• Cleared for approach, report final.

To put on protective breathing equipment (PBE), a smoke hood used by crew.

• In case of smoke, don PBE immediately.
• The crew member quickly donned the PBE.

To force someone to leave an organisation, often in a way that involves shame.

• He was drummed out of the army for his actions.
• Members can be drummed out of the club for breaking the rules.

Paid for by taxes or other means, so the user pays nothing when using the service.

• Healthcare in this country is free at the point of use.
• The service is free at the point of use.