What specific factors must be considered when selecting the flight altitude to which the aeroplane is assumed to descend in the oxygen determination?

The flight altitude must allow the flight to be completed safely, ensuring adequate terrain clearance, navigational accuracy, and hazardous weather avoidance.

In the oxygen determination for a non-pressurised aeroplane, what document specifies the emergency descent procedures to be assumed?

The Airplane Flight Manual (AFM).

Does AMC1 SPO.IDE.A.175 specify a particular date on or after which its requirements apply?

No, the section does not state any applicability date.

AMC1 SPO.IDE.A.175 Supplemental oxygen - non-pressurised aeroplanes

Q: What assumptions are made when determining the amount of oxygen needed for a route in a non-pressurised aeroplane under AMC1 SPO.IDE.A.175?

It is assumed that the aeroplane will descend in accordance with the emergency procedures specified in the AFM, without exceeding its operating limitations, to a flight altitude that will allow the flight to be completed safely (i.e. flight altitudes ensuring adequate terrain clearance, navigational accuracy, hazardous weather avoidance etc.).

Navigate / EASA

Ask question Discover more Add to collection

AMC1 SPO.IDE.A.175 Supplemental oxygen – non-pressurised aeroplanes

ED Decision 2014/018/R

DETERMINATION OF OXYGEN

(a) In the determination of oxygen for the routes to be flown, it is assumed that the aeroplane will descend in accordance with the emergency procedures specified in the AFM, without exceeding its operating limitations, to a flight altitude that will allow the flight to be completed safely (i.e. flight altitudes ensuring adequate terrain clearance, navigational accuracy, hazardous weather avoidance etc.).

(b) The amount of oxygen should be determined on the basis of cabin pressure altitude and flight duration.

Details

Source-Title: AMC1 SPO.IDE.A.175 Supplemental oxygen - non-pressurised aeroplanes View latest amendments

Erulesid: ERULES-1963177438-14128 Compare versions

Domain: Air operations

Applicabilitydate: 1 July, 2014

Entryintoforcedate: 1 July, 2014

Regulatorysource: ED Decision 2014/018/R Navigate

Regulatorysubject: Part-SPO

Typeofcontent: AMC to IR (Acceptable means of compliance to implementing rule)

Parentir: SPO.IDE.A.175 Supplemental oxygen - non-pressurised aeroplanes

Origin: EASA

Category: EAR