To accurately calculate the safety limits of explosive shock waves generated by shaped cutting charges and solid rocket motors during aircraft ejection escape, this study conducted an in-depth analysis of explosive blast protection standards applied in domestic and international practices for clearing ejection paths using shaped cutting technology. Experimental data from nine pressure sensors were collected during tests. The maximum peak shock wave pressure recorded by the sensors reached 188.5 dB, exceeding the calculated safety limit. Two different standards were applied to calculate safety limits using six sets of data collected outside helmets. The differences between calculation results ranged from 0.27 dB to 8.72 dB, showing significant discrepancies. Meanwhile, measured protective performance of helmets against shock waves showed values of 20.51 dB and 21.3 dB.