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. 2020 Apr 16;15(4):e0231391. doi: 10.1371/journal.pone.0231391

Table 5. Mean human error probability (HEP) in different flight phases.

Method Mean HEP in different flight phases Total mean HEP
Climbing and cruise Descent Approach Landing
HEART 3.17E-01 3.92E-01 3.49E-01 4.18E-01 3.88E-1
IAHP-HEART 7.57E-03 1.42E-02 3.34E-02 3.30E-02 2.49E-02
Human factor event proportion 12.8% 20.3% 38.3% 28.6%

HEART, human error assessment and reduction technique; IAHP, improved analytic hierarchy process.