From: Scheduling the repair of aircraft components - a case study
Aircraft component | N | Mean | Lower | Median | Upper | Trimean | Trimmed | Trimmed | Standard | Coefficient |
---|---|---|---|---|---|---|---|---|---|---|
quartile (Q 1) | (Q 2) | quartile (Q 3) | \({\frac {Q_{1}+2Q_{2}+Q_{3}}{4}}\) | mean (25 %) | mean (5 %) | deviation | of variation | |||
(a) Valve Ckeck (HTE400115) | 12 | 5 | 3.51 | 5.03 | 6.41 | 5 | 4.98 | 2.28 | 0.46 | |
(b) Valve control wing anti-ice (SAS911-002A) | 72 | 11 | 5.19 | 7.47 | 14.36 | 8.62 | 9.2 | 10.96 | 10.25 | 0.9 |
(c) Flow control valve (1303A0000-04) | 79 | 14 | 7.33 | 11.7 | 17.74 | 12.12 | 12.42 | 13.36 | 10.54 | 0.76 |
(d) Valve engine anti-ice (324195-1) | 16 | 25 | 6.46 | 25.85 | 34.89 | 23.26 | 22.07 | 21.85 | 0.86 | |
(e) Valve starter shutoff (3290064-17) | 46 | 13 | 5.64 | 12.19 | 18.73 | 12.18 | 11.95 | 12.72 | 9.1 | 0.7 |
(f) Valve starter shutoff (3290064-20) | 88 | 14 | 6.65 | 12.26 | 17.38 | 12.13 | 12.18 | 13.14 | 10.76 | 0.77 |
(g) Valve starter shutoff (3291556-3) | 14 | 10 | 7.64 | 9.19 | 11.05 | 9.26 | 9.79 | 5.1 | 0.49 | |
(h) Thermostat control temperature (342B040000) | 65 | 6 | 0.75 | 1.5 | 11.75 | 3.88 | 4.67 | 6.02 | 7.64 | 1.21 |
(i) Auxiliary power unit (3800278-4) | 25 | 15 | 6.08 | 10.93 | 17.57 | 11.38 | 11.44 | 15.49 | 19.27 | 1.24 |
(j) Actuator (65-20892-13) | 82 | 9 | 1.65 | 8.7 | 13.89 | 8.24 | 8.28 | 8.67 | 7.42 | 0.82 |
(k) Bleed pressure regulating valve (6714D070000) | 10 | 22 | 5.55 | 12.62 | 41.66 | 18.11 | 20.91 | 19.46 | 0.89 | |
(l) Bleed pressure regulating valve (6774E010000) | 87 | 4 | 0.75 | 3.14 | 5.73 | 3.19 | 3.36 | 3.97 | 4.16 | 0.99 |
(m) Exchanger heat (753A0000-03) | 11 | 24 | 5.62 | 9.94 | 42.69 | 17.05 | 21.28 | 22.33 | 0.93 | |
(n) Element filter (856504-5) | 10 | 3 | 2.12 | 2.83 | 3.58 | 2.84 | 3.05 | 2.11 | 0.64 | |
(o) Valve pneu press regulator (898626-3) | 11 | 38 | 14.95 | 22.97 | 49.65 | 27.63 | 30.67 | 37.77 | 0.98 |