TM 55-4920-432-13&P PITOT AND STATIC SYSTEMS TESTER NSN:  4920-01-244-2146 GROUP COMPONENT MAINTENANCE MAINTENANCE TOOLS NUMBER ASSEMBLY FUNCTION AVUM AVIM & EQUIPMENT REMARKS 0504 Connector Inspect .1 A,B Power Replace 1.0 4 C 0505 Rectifier Inspect .1 A Replace 4 B,C 0506 Diode Inspect 2 A Replace .7 4 B,C 0507 Harness Inspect .5 A,B Replace 2.0 4 C Repair .5 4 0508 Toggle Switch Inspect .1 A Replace .5 4 C 0509 Fuse Inspect .1 A Replace .1 C 0510 Fuse Holder Inspect .1 A Replace .5 4 C 0511 Spare Fuse Inspect .1 A Clip Replace .3 4 C 0512 Pilot Lamp Inspect .1 4 A Replace .5 4 C 06 Cover and Inspect .2 Case Replace 1.0 3 B-6