Farnborough Airfield Category

[portsharbourflyer]

SEPP you need to go a few pages down on the regulation.

(i) category A — an aerodrome that meets all of the following requirements:
(A) an approved instrument approach procedure;
(B) at least one runway with no performance limited procedure for take-off and/or landing;
(C) published circling minima not higher than 1 000 ft above aerodrome level; and
(D) night operations capability.
(ii) category B — an aerodrome that does not meet the category A requirements or which requires extra considerations such as:
(A) non-standard approach aids and/or approach patterns;
(B) unusual local weather conditions;
(C) unusual characteristics or performance limitations;
or (D) any other relevant considerations, including obstructions, physical layout, lighting, etc.
(iii) category C — an aerodrome that requires additional considerations to a category B aerodrome; (iv) offshore installations may be categorised as category B or C aerodromes, taking into account the limitations determined in accordance with AMC1 SPA
It is mainly aircraft performance considerations that will mean for one Aircraft type an Airfield can be CAT A, but for another it will be CAT B. For example at Farnborough a Citation Mustang will not have any performance limitations so it would be CAT A. But a Boeing BBJ may have performance limitations so will be CAT B. One Runway at Farnborough does have reduced minima for the 2.5 % missed approach gradient, which again for lower performance types could make it CAT B, other operators may deem from the lower minima an adequate climb gradient can still achieved for obstacle clearance hence may still call it CAT A. The latter point I would make it CAT B irrespective; but It is also discretion of the assessor / operator to what they consider to be an unusual feature sometimes.