The Chloride Pyrotector 30‑215‑B is a flame‑sensing fire detector used in aircraft systems, typically mounted on the fuselage or engine nacelle and wired to the aircraft’s fire suppression control panel. Common failure modes for this class of detectors include sensor element degradation (due to soot or corrosion), power supply dropout, and internal circuit board faults such as blown fuses or damaged ICs. First‑check diagnostics: verify 24 V DC supply continuity and correct voltage at the detector terminals; inspect the visual condition of the flame sensor element for deposits or physical damage; review any recorded fault codes on the aircraft’s fire control panel and compare with known service bulletins for the 30‑215 series.[oss-gpt-20b]