Prevent hazardous materials from being shipped by air

[dsdeel]

We have a few materials that are hazardous and cannot be shipped by air.  What are some ways I can configure SAP or the material master to prevent the shipping method from being air.  For example:  Do not allow UPS Next Day Air but allow UPS Ground.  This would be needed for all types of orders for the material.

[dsdeel]

I may not have clear with my question.  We have materials in SAP that should not be allowed to be shipped by air because they are hazardous and the FAA gets upset if you try to put it on a plane.  The material can only be shipped by truck.  For example, shipping UPS Ground would be okay.  Is there a way in SAP configuration or in the material's master data to restrict the shipping methods allowed for specific materials?

[RobynCouch]

You should be able to use configuration to control this.  Start with the transportation group in the material master and then use this to influence your route determination.