I think the issue is more the amount of money spent for the amount of used it would get. How many days a year would SY BN and ML get fogged and closed to all departures and arrivals. I think you would have a hard time justifying a Cat 3 in BN and SY for maybe 1-2 days a year. ML will have a CAT III running one day but will the domestic operators be prepared to pay for the extra training and recurrency? I agree that for such international airports they should have CAT III but who is willing to spend the money?