While cotton, from the cotton plant, and linen, from the flax plant, are both natural plant fibers (cellulose), there are many differences between them. The term Linens can colloquially refer to any household good, but this should not be confused with linen fabric.
The NTSB defines an incident as an occurrence other than an accident, associated with the operation of an aircraft, which affects or could affect the safety of operations. While many incidents do not need to be reported to the NTSB, there are serious incidents that must be reported.
Aircraft Accident means an occurrence associated with the operation of an aircraft which takes place between the time any person boards the aircraft with the intention of flight and when all such persons have disembarked, and in which any person suffers death or serious injury, or in which the aircraft receives substantial damage. For the purposes of this chapter, parachuting activities which result in death or serious injury also constitutes an accident. Fatal injury means an injury which results in death within 30 days.