The ABC’s of Skydiving: I

In Date: This term is used to describe a reserve pack that has been fully packed. If it was packed prior to 120 days before the jump, it is considered to be ‘in date.’ If it was packed over 120 days ago, it’s considered to be ‘out of date’ and it is illegal to use an out of date pack.

Instructor: To be considered an official skydiving instructor, one must have had a jumpmaster rating for at least one year and must also have completed and passed an Instructor Certification Course.

IPC - This is an abbreviation for the International Parachuting Commission, which oversees  sport parachuting. The commission is a sub-committee of the FAI.