An Operational Safety Evaluation Method for Manned Transport Aircraft and Large UAV in Mixed Airspace

Table 1

The maintenance actions and costs corresponding to different maintenance levels.

Type	Number of serious failures per 100,000 flight hours	MTBF (hour)	Applicability of flight status (%)	Task completion schedule (%)
Airbus 320 (no statistical NEO)	0.20	48.5	12	85
Boeing 737NG (800)	0.20	49.2	12	85
AT-200	12	29.5	96	86
Y-5 (UAV)	9	23.4	87	78
Predator	34	44.1	73	79
Pioneer	248	19.2	77	83
Hunter	15	10.9	96	81