Assessment of an Anomaly Detector for Jet Engine Health Monitoring

Table 6

Detection performance for the different events.

FC	Description	PCD	MDD	Span
1	Fan fault	100	1.23	1
2	lpc fault	100	1.83	11
3	hpc fault	100	1.13	1
4	hpt fault	100	1.00	0
5	lpt fault	100	1.04	1
6	vbv fault	100	1.73	5
7	vsv fault	100	1.00	0
8	𝑃13 bias	55	5.95	11
9	𝑇26 bias	78	5.41	13
10	𝑃3 bias	79	6.15	13
11	𝑇3 bias	75	5.69	13
12	𝑁lp bias	58	5.09	13
13	𝑁hp bias	60	5.48	12
14	𝑇49 bias	57	6.17	12
15	𝑊𝑓 bias	100	1.29	1
16	𝑃2 bias	69	4.19	13
17	𝑇2 bias	100	2.02	7
18	Water-wash	100	1.00	0
19	hpt service	100	1.00	0
20	lpt service	41	7.24	11

PCD: percent correctly detected, MDD: mean detection delay.