AMC1 CAT.POL.A.235 Landing -- dry runways

Q: When a landing requires the use of an automatic landing system and the AFM-published automatic landing distance already includes safety margins equivalent to those in CAT.POL.A.235, how should the landing mass be determined?

The landing mass should be the lesser of: (a) the landing mass determined in accordance with CAT.POL.A.235; or (b) the landing mass determined for the automatic landing distance for the appropriate surface condition, as given in the AFM or equivalent document, including increments due to system features such as beam location or elevations, or procedures such as use of overspeed.

Q: For an automatic landing, if the AFM's automatic landing distance already contains safety margins equivalent to those in CAT.POL.A.235, which two landing mass values must be compared to select the correct one?

The two values to compare are: (a) the landing mass determined in accordance with CAT.POL.A.235; and (b) the landing mass determined for the automatic landing distance for the appropriate surface condition, as given in the AFM or equivalent document, with increments for system features or procedures included. The lesser of the two must be used.

Q: Does AMC1 CAT.POL.A.235 require that the automatic landing distance published in the AFM include safety margins equivalent to those in CAT.POL.A.235 before the factoring method can be applied?

Yes, the method applies only in those cases where the distance published in the AFM includes safety margins equivalent to those contained in CAT.POL.A.235.

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AMC1 CAT.POL.A.235 Landing — dry runways

ED Decision 2022/012/R

FACTORING OF AUTOMATIC LANDING DISTANCE PERFORMANCE DATA

In those cases where the landing requires the use of an automatic landing system, and the distance published in the AFM includes safety margins equivalent to those contained in CAT.POL.A.235, the landing mass of the aeroplane should be the lesser of:

(a) the landing mass determined in accordance with CAT.POL.A.235; or

(b) the landing mass determined for the automatic landing distance for the appropriate surface condition, as given in the AFM or equivalent document. Increments due to system features such as beam location or elevations, or procedures such as use of overspeed, should also be included.

Details

Source-Title: AMC1 CAT.POL.A.235 Landing -- dry runways View latest amendments

Erulesid: ERULES-1963177438-19642 Compare versions

Domain: Air operations

Applicabilitydate: 30 October, 2022

Entryintoforcedate: 1 July, 2022

Regulatorysource: ED Decision 2022/012/R Navigate

Regulatorysubject: Part-CAT

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

Parentir: CAT.POL.A.235 Landing - wet and contaminated runways

Origin: EASA

Category: EAR