The Maryland Air National Guard (MDANG) requests for vendor to inspect the 150lb Halon Fire Bottle to ensure compliance with latest Time Compliance Technical Orders (TCTO) 13F4-4-501D.
Vendor to visually inspect Down Tube to ensure welding has not failed. Vendor to complete the manufacturer’s developed low pressure leak test to check serviceability of the down tube using low pressure nitrogen or clean air from a regulated source and applying a leak detector fluid. Vendor will provide a Retrofit Change or Inspection Identification Marking sealed
with clear epoxy to seal it from the element, this will identify the completion of the TCTO for the particular fire bottle.