| Hypothesis | P | T | P/T |
|---|---|---|---|
| TCCS Aux. Fan #1 Failure ★ | 0.372 | 20 | 0.019 |
| PDU 5 Failure | 0.056 | 6 | 0.009 |
| TCCS Aux. Fan #2 Failure | 0.164 | 20 | 0.008 |
| PDU 4 Failure | 0.048 | 6 | 0.008 |
| TCCS Aux. Fan at Reduced Capacity | 0.030 | 4 | 0.007 |
| Reduced Main Cabin Fan #1 Capacity | 0.030 | 4 | 0.007 |
| TCCS Filter Clog | 0.123 | 18 | 0.007 |
| Trace Contaminants | 0.123 | 20 | 0.006 |
| Fuel Cell #1 and PDU Failure | 0.056 | 14 | 0.004 |
Diagnosis is held fixed (knowledge graph). Only the recovery ranking changes.
| Ordering | Sequence | TTR |
|---|---|---|
| P/T | Fan #1 (first) | 21 min |
| Highest P | Fan #1 (first) | 21 min |
| Shortest T | Reduced Cap. → PDU → … → Fan #1 | 61 min |
| Random | PDU → Trace → … (timeout) | — |
After the timed gate, Fan #1 leads on both P and P/T, so those two orderings recover on the first try. Shortest T still burns cheap wrong procedures; this random seed never reaches the true swap in time.