Accounting Legend Code (ALC)
- (ALC) A numeric code used within the COMSEC Material Control System to indicate the minimum accounting controls required for items of TSEC-nomenclatured COMSEC material. ALC categories are specified in NACS1 4005. (NCSC-9) NOTE: National-level ALCs are:
a. ALC-1: Continuously accountable by serial number.
b. ALC-2: Continuously accountable by quantity.
c. ALC-4: Report of initial receipt required.
- After acknowledging receipt, the COMSEC manager and users will control according to AFKAG-1 or Air Force Systems Security Instruction (AFSSI) 4005, respectively. (AF9K_JBC. TXT) Numeric code used to indicate the minimum accounting controls required for items of accountable COMSEC material within the COMSEC Material Control System.