AIM: To analyze dark adaptation time and related factors in the current aircrews, and provide the basis for further development of targeted promotion measures and training.

METHODS: TSJ-Ⅰtype aircrew special instrument was used for checking dark adaptation time, while data was analyzed with age, time of flight, aircraft types and flight duties.

RESULTS: Dark adaptation time of most aircrews was less than 30s and prolonged by age and flight time(>3 000h), especially in transport aircrew group and mechanic aircrew group.

CONCLUSION:The dark adaptation time of aircrews extends by age, meanwhile strength flight and long-term of flying environment have significant effects on dark adaptation. Different machine types and functions of aircrew need appropriate training and protective measures.