cngaviation Posted January 14, 2015 Share Posted January 14, 2015 does anyone know with certainty if BYLB51044 is a direct (same fit, form, function) replacement for the 398648-1-1 Temp Limit Valve? Thanks, George Quote Link to comment Share on other sites More sharing options...
tinyclark Posted January 14, 2015 Share Posted January 14, 2015 Actually, the 398648-1-2 is the preferred spare for the -1-1. According to the USAF -4 that I have, it is an alternate. Quote Link to comment Share on other sites More sharing options...
hercules58 Posted June 28 Share Posted June 28 You are correct that the 398648-1-2 is the preferred spare to the 398648-1-1 but the IPC takes it a step further and states that the BYLB51044 is an alternate for the 398648-1-2 as they are both made to the Lockheed spec. 697752-1. Quote Link to comment Share on other sites More sharing options...
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