Video narration
At the medical desk, match the person to the roster, as you match a patient to a record. Run the screening test; check the reading before duty clearance. Clear only on a verified 0.000%, alongside required fitness checks. A screening result of 0.001% or above starts the positive process. Enter particulars in Appendix 1, the BA positive book, then select confirmatory equipment. With a witness present, perform its control test; after 15-25 minutes, conduct the confirmatory test with the witness present. Matching identity, witnessing each step and completing records protect the process. Complete all documentation and obtain signatures from the subject, medical personnel and witness. Send a confidential, one-line intimation to IOCC, DOPS and concerned departments. Send detailed intimation to the Base Medical Incharge and Base Medical Admin, for onward communication to Flight Safety and DGCA notification within 24 hours under DGCA CAR Section 5 Series F Part 3 and Part 4. Clear only after verifying the result; a positive screen means witnessed confirmation, complete records and confidential escalation.