SPA.HOFO.100 Helicopter offshore operations (HOFO) SPA.HOFO.105 Approval for helicopter offshore operations SPA.HOFO.110 Operating procedures SPA.HOFO.115 Use of offshore locations SPA.HOFO.120 Selection of aerodromes and operating sites SPA.HOFO.125 Offshore standard approach procedures (OSAPs) SPA.HOFO.130 Meteorological conditions SPA.HOFO.135 Wind limitations for operations to offshore locations SPA.HOFO.140 Performance requirements at offshore locations SPA.HOFO.145 Flight data monitoring (FDM) programme SPA.HOFO.150 Aircraft tracking system SPA.HOFO.155 Vibration health monitoring (VHM) system SPA.HOFO.160 Equipment requirements SPA.HOFO.165 Additional procedures and equipment for operations in a hostile environment SPA.HOFO.170 Crew requirements