Calculating DA or MDA from OCA

[landmark1234]

Hi I am a a budget conscious pilot who has done his CPL/IR and just maintaining currency until I can get a job (whenever that is!). Does anyone know how I can calculated DA or MDA from OCA? The UK AIS website has IAP charts for free but the downside is there is no DA or MDA (for non precision approaches), only OCA (H)

Thanks

[babotika]

The MDA/DA will be the higher of the OCA or the system minima for the approach, as listed in JAR OPS 1 section E (assuming you are operating in JAR land)

System minima depends on airfield facilities, aircraft equipment, crew training/composition and company policy, if applicable.

S.

[stubby1]

OCA(H) is the obstacle alt/ht + min obstacle clearance.

OCA(H) + margin = DA(H) or MDA(H)

this margin depends on ops considerations.