{"operation":"document","citation":"DCA14MP001 docket item 21","title":"Operation Factual - Attachment 21- ALPSC cast iron letter dated August 23, 2012","source_type":"incident","agency":"National Transportation Safety Board","status":"current","official":true,"published_on":null,"effective_on":null,"summary":"DCA14MP001; docket item 21; Adobe PDF file.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-docket-item-40439092.json","markdown":"https://regulus.evalyn.ai/document/ntsb-docket-item-40439092.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-docket-item-40439092","source_url":"https://data.ntsb.gov/Docket/Document/docBLOB?ID=40439092&FileExtension=.PDF&FileName=Operation%20Factual%20-%20Attachment%2021-%20ALPSC%20cast%20iron%20letter%20dated%20August%2023,%202012-Master.PDF","body":"Operation Factual - Attachment 21- ALPSC cast iron letter dated August 23, 2012 DCA14MP001 docket item 21. 4 pages. 0 photograph references. Published media type: Adobe PDF file. Metadata only; the linked docket file is not mirrored.","truncated":false,"body_characters":233}