| Clue | Source | Date |
|---|---|---|
| One look by police at troublemaker provides possible reason for crash (5,5) | ||
| Possibility considered after an air accident | New York Times | 08 Jan 2016 |
| Possibility considered after an air accident | ||
| Mistake in the cockpit | LA Times Daily | 25 Aug 2015 |
| Mistake in the cockpit |