SLD45I21-101 governs positive tool control and accountability for airfield services, maintenance agencies, and facilities at PSFB and CCSFS.
View SLD45I21-101 on armypubs.army.mil
It covers CTK identification, equipment marking, small-tool inventory, calibrated tools, and HAZMAT consumables. It requires units to maintain reliable control programs and account for tools and equipment brought onto airfields or maintenance facilities.
Applies to: This publication applies to uniformed members of the Regular Air Force, the Air National Guard, the United States Space Force; all Department of the Air Force (DAF) civilian employees; and those with a contractual obligation to abide by the terms of DAF issuances.
Adhering to this instruction aids in reducing and deterring Foreign Object Damage (FOD) to aircraft, engines, aircrew training devices, and support equipment. (paragraph 1)
Airfield service agencies including contractors will mark all tools and equipment used to support aircraft maintenance operations with the most current 9-digit Equipment Identification Designator (EID) marking guidance. (paragraph 1)
An EID marking uses exactly 9 digits. The EID will include a combination of upper-case letters and numbers without spaces or special characters. (paragraph 1)
Units may affix non-metallic barcode labels on tools to prevent re-etching as long as the use of the tool and its work environment does not result in excessive damage to the label, making it unreadable. (paragraph 1)
Airfield service agencies including contractors will place small tools in a suitable container (holder, pouch, bag, etc.) and identify them using the MIL. (paragraph 1)