Type B(U) and Type B(M) packages, if transported by air, shall not contain activities greater than the following:

(a) For low dispersible radioactive material: as authorized for the package design as specified in the certificate of approval;

(b) For special form radioactive material: 3000 A1 or 100 000 A2, whichever is the lower; or

(c) For all other radioactive material: 3000 A2.