How must the airspeed indicating system be protected from condensation or icing?

A means of preventing malfunction of the airspeed indicating system due to condensation or icing must be provided.

What must be equipped on helicopters operated under IFR according to NCO.IDE.H.125?

Helicopters operated under IFR shall be equipped with a means of measuring and displaying magnetic heading, time, barometric altitude, indicated airspeed, vertical speed, slip, attitude, stabilised heading, and outside air temperature; a means of indicating when the supply of power to the gyroscopic instruments is not adequate; a means of preventing malfunction of the airspeed indicating system due to condensation or icing; and an additional means of measuring and displaying attitude as a standby instrument.

What are the nine parameters that must be measurable and displayable on a helicopter operated under IFR?

Magnetic heading, time in hours, minutes and seconds, barometric altitude, indicated airspeed, vertical speed, slip, attitude, stabilised heading, and outside air temperature.

Does NCO.IDE.H.125 require a separate standby instrument for any parameter other than attitude?

No, the only standby instrument required is an additional means of measuring and displaying attitude.

Is a means of measuring outside air temperature required for helicopters under IFR?

Yes, outside air temperature is listed as one of the parameters that must be measured and displayed.

What is the applicability date of Regulation (EU) 2019/1384 as referenced in NCO.IDE.H.125?

The section does not state an applicability date.

NCO.IDE.H.125 Operations under IFR - flight and navigational instruments and associated equipment

Q: What is required to indicate a failure of the power supply to the gyroscopic instruments?

A means of indicating when the supply of power to the gyroscopic instruments is not adequate.

Q: What additional attitude instrument is required for IFR operations in helicopters?

An additional means of measuring and displaying attitude as a standby instrument.

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NCO.IDE.H.125 Operations under IFR – flight and navigational instruments and associated equipment

Regulation (EU) 2019/1384

Helicopters operated under IFR shall be equipped with:

(a) a means of measuring and displaying the following:

(1) magnetic heading;

(2) time in hours, minutes and seconds;

(3) barometric altitude;

(4) indicated airspeed;

(5) vertical speed;

(6) slip;

(7) attitude;

(8) stabilised heading; and

(9) outside air temperature;

(b) a means of indicating when the supply of power to the gyroscopic instruments is not adequate;

(c) a means of preventing malfunction of the airspeed indicating system required by (a)(4) due to condensation or icing; and

(d) an additional means of measuring and displaying attitude as a standby instrument.

Details

Source-Title: NCO.IDE.H.125 Operations under IFR - flight and navigational instruments and associated equipment View latest amendments

Erulesid: ERULES-1963177438-13635 Compare versions

Domain: Air operations

Applicabilitydate: 25 August, 2013

Entryintoforcedate: 25 August, 2013

Regulatorysource: Regulation (EU) 2019/1384 Navigate

Regulatorysubject: Part-NCO

Typeofcontent: IR (Implementing rule)

Origin: EASA

Category: EAR

NCO.IDE.H.125 Operations under IFR – flight and navigational instruments and associated equipment

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