How many drop-down O2 masks can be found in each PSU?

Prepare for the Ryanair Conversion 4 Test with focused study guides and practice questions. Improve your knowledge and increase your chances of success with detailed explanations and flashcards.

Multiple Choice

How many drop-down O2 masks can be found in each PSU?

Explanation:
Oxygen systems are organized by the Passenger Service Unit. In this setup, each PSU contains a bundled set of masks for the seating area served by that unit. On Ryanair’s typical aircraft, that bundle has four masks. This arrangement matches the standard seating block served by a single PSU—often two seats on each side of the aisle—so when oxygen is required, four masks are available to that zone. The masks drop and, once deployed, you pull one toward you, place it over your nose and mouth, secure the strap, and breathe normally. Other counts wouldn’t align with the common layout for this aircraft type, so four is the correct number.

Oxygen systems are organized by the Passenger Service Unit. In this setup, each PSU contains a bundled set of masks for the seating area served by that unit. On Ryanair’s typical aircraft, that bundle has four masks. This arrangement matches the standard seating block served by a single PSU—often two seats on each side of the aisle—so when oxygen is required, four masks are available to that zone. The masks drop and, once deployed, you pull one toward you, place it over your nose and mouth, secure the strap, and breathe normally. Other counts wouldn’t align with the common layout for this aircraft type, so four is the correct number.

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