Performance — mass limitation
79.—(1)  An AOC holder must ensure that the mass of a relevant aircraft at the start of its take‑off does not exceed any of the following limits:
(a)the mass at which the requirements of the applicable Performance Class can be complied with for the planned flight;
(b)the maximum take-off mass specified in the aircraft’s flight manual for the pressure altitude appropriate to the aerodrome elevation and any other local atmospheric condition that is used as a parameter to determine the maximum take‑off mass;
(c)the maximum mass specified in the applicable noise certificate granted in respect of the aircraft, unless otherwise authorised by the competent authority of the State of the Aerodrome.
(2)  In the event of in-flight re‑planning for any flight of a relevant aircraft, the AOC holder must ensure that the mass of the aircraft at the point from which the revised operational flight plan applies does not exceed the mass at which the requirements of the applicable Performance Class can be complied with for the planned flight.
(3)  For every flight of a relevant aircraft, the AOC holder must ensure that the estimated mass of the aircraft at the expected time of landing at the planned destination aerodrome, and at any planned destination alternate aerodrome, does not exceed any of the following limits:
(a)the maximum landing mass specified in the aircraft flight manual for the pressure altitude appropriate to the aerodrome elevation and any other local atmospheric condition that is used as a parameter to determine the maximum landing mass;
(b)the maximum mass specified in the applicable noise certificate granted in respect of the aircraft, unless otherwise authorised by the competent authority of the State of the Aerodrome.