In what units must the pressure altitude display and its sub-scale be calibrated according to AMC1 NCC.IDE.A.120(a)(3)&NCC.IDE.A.125(a)(3)?

The pressure altitude display must be calibrated in feet (ft), and the sub-scale must be calibrated in hectopascals/millibars.

AMC1 NCC.IDE.A.120(a)(3)&NCC.IDE.A.125(a)(3) Operations under VFR & operations under IFR - flight and navigational instruments and associated equipment

Q: What type of altimeter is required for VFR and IFR operations under AMC1 NCC.IDE.A.120(a)(3)&NCC.IDE.A.125(a)(3)?

A sensitive type altimeter calibrated in feet, with a sub-scale setting calibrated in hectopascals/millibars, adjustable for any barometric pressure likely to be set during flight.

Q: How should the sub-scale of the barometric altitude instrument be adjustable according to AMC1 NCC.IDE.A.120(a)(3)&NCC.IDE.A.125(a)(3)?

The sub-scale should be adjustable for any barometric pressure likely to be set during flight.

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AMC1 NCC.IDE.A.120(a)(3)&NCC.IDE.A.125(a)(3) Operations under VFR & operations under IFR – flight and navigational instruments and associated equipment

ED Decision 2019/019/R

CALIBRATION OF THE MEANS FOR MEASURING AND DISPLAYING PRESSURE ALTITUDE

The instrument measuring and displaying barometric altitude should be of a sensitive type calibrated in feet (ft), with a sub-scale setting, calibrated in hectopascals/millibars, adjustable for any barometric pressure likely to be set during flight.

Details

Source-Title: AMC1 NCC.IDE.A.120(a)(3)&NCC.IDE.A.125(a)(3) Operations under VFR & operations under IFR - flight and navigational instruments and associated equipment View latest amendments

Erulesid: ERULES-1963177438-13245 Compare versions

Domain: Air operations

Applicabilitydate: 18 September, 2019

Entryintoforcedate: 18 September, 2019

Regulatorysource: ED Decision 2019/019/R Navigate

Regulatorysubject: Part-NCC

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

Parentir: NCC.IDE.A.120 Operations under VFR - flight and navigational instruments and associated equipment

Origin: EASA

Category: EAR