# Commission Regulation (EU) No 965/2012 of 5 October 2012 laying down technical requirements and administrative procedures related to air operations pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council, Division CAT.OP.MPA.320: Aeroplane categories

Extent: E+W+S+N.I.

(a) Aeroplane categories shall be based on the indicated airspeed at threshold (V AT ) which is equal to the stalling speed (V SO ) multiplied by 1,3 or one-g (gravity) stall speed (V S1g ) multiplied by 1,23 in the landing configuration at the maximum certified landing mass. If both V SO and V S1g are available, the higher resulting V AT shall be used.
(b) The aeroplane categories specified in the table below shall be used.
Table 1: Aeroplane categories corresponding to V AT values
Aeroplane category
V AT
A
Less than 91 kt
B
From 91 to 120 kt
C
From 121 to 140 kt
D
From 141 to 165 kt
E
From 166 to 210 kt
(c) The landing configuration that is to be taken into consideration shall be specified in the operations manual.
(d) The operator may apply a lower landing mass for determining the V AT if approved by the CAA. Such a lower landing mass shall be a permanent value, independent of the changing conditions of day-to-day operations.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/IV/division/subpart+b/division/section+1/division/catopmpa320 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-IV/division-subpart+b/division-section+1/division-catopmpa320
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.