TO Number: TM 55-1520-236-23P-1 - AH-1 - AVIATION UNIT AND INTERMEDIATE REPAIR PARTS AND SPECIAL TOOLS LIST FOR HELICOPTER ATTACK for Part Numbers: AH1-P, AH-1E, AH-1F
TO Number: 51509-002 - DC STATIC VOLTAGE REGULATOR AND PROTECTIVE PANEL - COMPONENT MAINTENANCE MANUAL (CMM) + ILLUSTRATED PARTS BREAKDOWN (IPB) for Part Numbers: 51509-002, 51509-002A, 51509-002B, 51509-002R
