Other than the handbook, where can you get the threshold crossing height (TCH) and/or glide slope for mission aircraft?

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Threshold crossing height and glide slope are field-specific parameters that define how an aircraft should approach and cross the runway threshold for a safe landing. Beyond the handbook, the most direct source for these values is the Senior Airfield Authority, the local authority responsible for airfield operations. They oversee the airfield’s approach procedures, lighting, markings, and any field-approved deviations, so they can provide the exact TCH and glide slope approved for mission aircraft at that airfield. The national aviation authority sets broad standards and maintains general procedures, but the day-to-day, field-specific numbers come from the local airfield authority. The other listed organizations are not the direct sources for those field-specific values in this context.