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AMC1 NCO.IDE.H.120(a)(4) & NCO.IDE.H.125(a)(4) Operations under VFR & operations under IFR – flight and navigational instruments and associated equipment

ED Decision 2025/023/R

CALIBRATION OF THE INSTRUMENT INDICATING AIRSPEED

(a) The instrument indicating airspeed should be calibrated in knots (kt).

(b) In the case of rotorcraft with an MCTOM below 2 000 kg, calibration in kilometres per hour (km/h) or in miles per hour (mph) is acceptable when such units are used in the AFM.
Details
Source-Title: AMC1 NCO.IDE.H.120(a)(4) & NCO.IDE.H.125(a)(4) Operations under VFR & operations under IFR - flight and navigational instruments and associated equipment View latest amendments
Erulesid: ERULES-1963177438-13643 Compare versions
Domain: Air operations
Applicabilitydate: 18 December, 2025
Entryintoforcedate: 18 December, 2025
Regulatorysource: ED Decision 2025/023/R Navigate
Regulatorysubject: Part-NCO
Typeofcontent: AMC to IR (Acceptable means of compliance to implementing rule)
Parentir: NCO.IDE.H.125 Operations under IFR - flight and navigational instruments and associated equipment
Origin: EASA
Category: EAR