<![CDATA[Effective Airport Emergency Plan (ERP) implementation requires personnel to translate documented procedures into appropriate decisions and coordinated actions during dynamic emergencies. However, empirical evidence regarding the effectiveness of scenario-based simulation for developing airport ERP competencies remains limited. This study examines the effectiveness of ESCAPE (Electronic Scenario-based Airport Emergency Exercise) as a scenario-based simulation approach for supporting ERP competency development. An R&D approach using the ADDIE model was employed. ESCAPE was validated by two subject-matter experts and two media experts selected through purposive sampling. Implementation involved 20 airport personnel selected through total sampling; no random assignment or control group was used. Product validity was assessed using expert questionnaires, while learning outcomes were evaluated using a one-group pre-test–post-test design. Data were analysed using validity percentages, Cronbach’s alpha, ICC, N-Gain, and a paired-samples t-test. Material and media validation achieved 89.50% and 87.78%, respectively, with good internal consistency and inter-rater agreement. Mean ERP competency scores increased from 70.75 to 88.13, yielding an N-Gain of 0.59 (medium category). The improvement was statistically significant, t (19) = 15.13, p < 0.001, with a 95% confidence interval of 14.97–19.78 and a very large effect size (Cohen’s d = 3.38). These findings indicate that scenario-based simulation through ESCAPE is associated with substantial improvement in ERP competency. Its main contribution is integrating ERP procedures with contextualized emergency scenarios, decision-making, resource positioning, and performance feedback, thereby providing a structured environment for connecting procedural knowledge with emergency-response application. Further controlled comparative studies are required to determine whether ESCAPE provides advantages over conventional ERP training approaches.]]>
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