An aircraft cabin medical telemetry system receives telemetry from wearable or medical devices through proxy-capable cabin nodes. The system associates the telemetry with passenger identity, seat, device, flight, consent, timing, and provenance context, and stores the telemetry or derived values as memory atoms in patient-partitioned contextual memory. A retrieval engine selects candidate memory atoms for a monitoring task. Before execution, a non-bypassable memory gate evaluates the candidate memory atoms under an aviation policy snapshot and integrity criteria. Admitted records are assembled into a governed context bundle. A constrained execution interface permits a monitoring or reasoning component to execute only using the governed context bundle and an execution governance artifact. Downstream reliance, including crew notification, documentation, display, or off-aircraft transmission to a remote monitoring center, is conditioned on verification of a readiness artifact. The system may operate as a cabin medical overlay isolated from flight-control systems.