![]() German patent 670241, filed 21 August 1934 and granted 22 December 1938.This patent of a design by Ernst Altenberger is the first to show a safety that moves the firing pin upward German patent 679683, filed and granted 20 July 1939.This is Ernst Altenberger’s patent for the barrel retention and release mechanism used in many of the The idea may have come from the barrel retention mechanism of the WTP, which places the mechanism behind the trigger and requires anĮxtension of the frame behind the trigger guard. Navdata DFD Data Format Specification Version 1.12 Revision History Read the “Revision History” section Version Getting Currently Supported Aircraft/Layout Options. ![]() Introduction Read the “Introduction” section IATA/ATA Designator added in the Airport tableįormat and link error in the document fixedĪdd missing "NDB class" definition to appendix Localizer Width added in the Localizer/Glideslope tableĭistance/Time flag added in the Procedure tables Time Code field added in the Restricted Airspace table Multiple Code field added in MSA and Restricted Airspace table ICAO 3-letter codes (continental for USA/CAN) column added in the Airport Records Marker Identifier added to Marker Records, FIR/UIR Address added to FIR/UIR Records Inbound/Outbound Course and Distance values added to Enroute Airway Records New records Gates, GLS added – first versionĪdded "boundary via" in Controlled Airspace table, sort information added in airspace-tables Table names standardized, database columns review/corrections SQL tables/indices added, new records Crusing, FIR/UIR, Restrictive Airspace, Controlled Aispace, Grid Mora, Airport MSA, Enroute Airways Restriction, Enroute Communication Records added
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