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TURNAROUND/ PREFLIGHT/ POST-FLIGHT/ TRANSFER INSPECTIONS.- These inspections are visual inspections performed in conjunction with the inspection requirements for the aircraft in which
the regulators are installed. Refer to table 4- 3 for assistance in trouble-shooting.
Visually inspect the following: 1. Electrical performance of the panel light 2. Legibility of all the markings 3. Plastic lighting plate for cracks and discoloration 4. Low or improper reading on regulator pressure gauge 5. Emergency pressure control lever in NORMAL position 6. Diluter control lever in 100% OXYGEN position 7. Supply valve control lever in OFF position 8. Regulator and surrounding area free of dirt and hydrocarbons 9. Delivery hose and connector for cuts, fraying, kinking, hydrocarbons, and general condition If discrepancies are found or suspected. maintenance control should be notified. Regulators that do not pass inspection and cannot be repaired in the aircraft are removed and replaced by ready-for-issue (RFI) regulators. Non-RFI regulators are forwarded to the nearest maintenance activity having repair capability.
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