If an altimeter indicates within the specified tolerance on the ground, what should the pilot do with that indication during flight?

No adjustment of this indication should be made at any stage of the flight, and any error within tolerance on the ground should be ignored by the pilot during flight.

If the altimeter does not indicate the reference elevation exactly but is within the specified tolerances, what action should be taken?

No adjustment of this indication should be made at any stage of the flight, and any error within tolerance on the ground should be ignored by the pilot during flight.

AMC1 NCO.OP.101(a) Altimeter check and settings

Q: What tolerance is allowed for a serviceable altimeter when it indicates the elevation of the point selected plus the height of the altimeter above that point during pre-flight?

A tolerance of ± 60 ft is allowed.

Q: When no altimeter setting is available at the departure aerodrome or operating site, how should the altimeter be set and when should the setting be verified?

The altimeter should be set using the elevation of the aerodrome or operating site, and the altimeter setting should be verified on first contact with an ATS unit.

Q: What does a serviceable altimeter indicate during the pre-flight altimeter check, and within what tolerance?

It indicates the elevation of the point selected, plus the height of the altimeter above this point, within a tolerance of ± 60 ft.

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AMC1 NCO.OP.101(a) Altimeter check and settings

ED Decision 2022/012/R

PRE-FLIGHT ALTIMETER CHECK

A serviceable altimeter indicates the elevation of the point selected, plus the height of the altimeter above this point, within a tolerance of ± 60 ft.

If the altimeter does not indicate the reference elevation or height exactly but is within the specified tolerances, no adjustment of this indication should be made at any stage of a flight. Also, any error which is within tolerance on the ground should be ignored by the pilot during flight.

If no altimeter setting is available at the aerodrome or operating site of departure, the altimeter should be set using the elevation of the aerodrome or operating site, and the altimeter setting should be verified on first contact with an ATS unit.

Details

Source-Title: AMC1 NCO.OP.101(a) Altimeter check and settings View latest amendments

Erulesid: ERULES-1963177438-19705 Compare versions

Domain: Air operations

Applicabilitydate: 30 October, 2022

Entryintoforcedate: 1 July, 2022

Regulatorysource: ED Decision 2022/012/R Navigate

Regulatorysubject: Part-NCO

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

Parentir: NCO.OP.101 Altimeter check and settings

Origin: EASA

Category: EAR