Clean Air Waybill
The clean air waybill may bear an indication that the goods were received without damages, irregularities or short shipment, the words "apparent good order and condition", "clean on board" or the like may be indicated on the air waybill (AWB).
Foul Air Waybill
The foul air waybill---unclean air waybill, dirty air waybill or claused air waybill---is the opposite of the clean air waybill. It bears an indication that the goods were received with damages, irregularities or short shipment, usually the words "unclean on board" or the like are indicated on the air waybill (AWB), for example, "insufficient packing", "missing safety seal" and "one carton short".