CS HPT-DSN.B.120 Touchdown and lift-off areas (TLOFs)

• ED Decision 2019/012/R found in: Aerodromes (139/2014) Part-ADR.AR Part-ADR.OR Part-ADR.OPS CS-ADR-DSN CS-HPT-DSN (Dec 2024)

CS HPT-DSN.B.120 Touchdown and lift-off areas (TLOFs) ED Decision 2019/012/R (a) General: (1) At least one TLOF should be provided at a heliport. (2) One TLOF should be located within the FATO or one or more TLOFs should be collocated with helicopter stands. (b) Characteristics: (1) A TLOF should be of sufficient size to contain a circle of diameter of at least 0.83 D of the largest helicopter the area is intended to serve. (2) Where the TLOF is within the FATO, the TLOF should be dynamic load-bearing. (3) Where a TLOF is collocated with a helicopter stand, the TLOF should be static load-bearing and be capable of withstanding the traffic of the helicopters that the area is intended to serve. (4) Slopes on a TLOF should be sufficient to prevent accumulation of water on the surface of the area and should not exceed 2 per cent in any direction. (5) Where a TLOF is located within a FATO which can contain a circle of diameter more than 1 D, the centre of the TLOF should be located not less than 0.5 D from the edge of the FATO. CS HPT-DSN.B.120 Touchdown and lift-off areas (TLOFs) ED Decision 2019/012/R (a) General: (1) At least one TLOF should be provided at a heliport. (2) One TLOF should be located within the FATO or one or more TLOFs should be collocated with helicopter stands. (b) Characteristics: (1) A TLOF should be of sufficient size to contain a circle of diameter of at least 0.83 D of the largest helicopter the area is intended to serve. (2) Where the TLOF is within the FATO, the TLOF should be dynamic load-bearing. (3) Where a TLOF is collocated with a helicopter stand, the TLOF should be static load-bearing and be capable of withstanding the traffic of the helicopters that the area is intended to serve. (4) Slopes on a TLOF should be sufficient to prevent accumulation of water on the surface of the area and should not exceed 2 per cent in any direction. (5) Where a TLOF is located within a FATO which can contain a circle of diameter more than 1 D, the centre of the TLOF should be located not less than 0.5 D from the edge of the FATO. #### CS HPT-DSN.B.120   Touchdown and lift-off areas (TLOFs) *ED Decision 2019/012/R* (a) General: (1) At least one TLOF should be provided at a heliport. (2) One TLOF should be located within the FATO or one or more TLOFs should be collocated with helicopter stands. (b) Characteristics: (1) A TLOF should be of sufficient size to contain a circle of diameter of at least 0.83 D of the largest helicopter the area is intended to serve. (2) Where the TLOF is within the FATO, the TLOF should be dynamic load-bearing. (3) Where a TLOF is collocated with a helicopter stand, the TLOF should be static load-bearing and be capable of withstanding the traffic of the helicopters that the area is intended to serve. (4) Slopes on a TLOF should be sufficient to prevent accumulation of water on the surface of the area and should not exceed 2 per cent in any direction. (5) Where a TLOF is located within a FATO which can contain a circle of diameter more than 1 D, the centre of the TLOF should be located not less than 0.5 D from the edge of the FATO.