AD 57-06-03

This AD applies to Pratt & Whitney Division Wasp Major B13, Wasp Major B14, Wasp Major B5, Wasp Major B6, Wasp Major B7, Wasp Major CB2, Wasp Major TSB3-G.

The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.