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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Operational Procedures > For a pressurised CAT aeroplane at FL390, how is the minimum total number of cabin oxygen dispensing units and outlets calculated under CAT.IDE.A.235(d)?

254 - ATPL Question Bank in English - For a pressurised CAT aeroplane at FL390, how is the minimum total number of cabin oxygen dispensing units and outlets calculated under CAT.IDE.A.235(d)?

Question 254 - Operational Procedures - ATPL - Airline Transport Pilot Licence

Use only the actual passenger headcount.

Use the covered cabin-seat count without any additional units.

Use the actual passenger headcount plus 10%.

The number of cabin seats covered by CAT.IDE.A.235(b)(3), including passenger and cabin/additional-crew seats, plus at least 10%.

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