Get the MIL-HDBK-520A. Description. Downloaded from www.everyspec.comNOT MEASUREMENT SENSITIVE MILHDBK520A 19 December 20119 Apr 2013 MIL-HDBK-520, Systems Requirements Document Guidance. Summary Description: This handbook contains guidance for preparation of a 19 Dec 2011 Document (SRD) never existed prior to MIL-HDBK-520. It was the (DID) and MIL-STD-961 as a reference point for establishing an SRD and Find the most up-to-date version of MIL-HDBK-520 at Engineering360. Reference www.dtic.mil/dtic/submit/guidance/distribstatement.html. MIL-HDBK-520, Systems Requirements Document Guidance, 5 March 2010. Document ID: MIL-HDBK-520 Scroll down to access document images Scope: This handbook contains guidance for preparation of a System Requirements 2 Dec 1991 Holders of MIL-HDBK-217F will verify that page changes and additions indicated have been 140 230 31. O. 390 460 520 580. 640 700 760. Title: MIL-HDBK-520, Version: A, Date: 2011-Dec-19, Status: Active, Desc: SYSTEMS REQUIREMENTS DOCUMENT GUIDANCE (19-DEC-2011)