The iron and sulphur still behave like iron and sulphur in the mixture, but iron sulphide has different properties from both iron and sulphur. You can separate the iron from the mixture using a magnet but this does not work for iron sulphide. 1  Page.
Search for: An Airworthiness Directive (A.D.) is a directive issued when the FAA realizes that a perilous condition exists in a product (aircraft engine, airframe, appliance or propeller). They notify aircraft operators and owners of potentially unsafe conditions that need special inspections, alterations, or repairs.
SUBJECT: Air Force Guidance Memorandum (AFGM) to AFI 36-2110, Assignments. 1. By order of the Secretary of the Air Force, this guidance memorandum implements changes to AFI 36-. 2110, Assignments. Compliance with this memorandum is mandatory and effective upon the publication. date of this AFGM.