Cessna 177RG Precise Flight Standby Vacuum Regulator. P/N PL-20090. S/N 17474. Removed in good condition from a parted out 1975 Cessna 177RG N2763V, S/N 177RG0687. TTAF 3,909.5. Cessna 310P Garwin Shunt P/N 22-370-125 (0720-339).
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