Characterisation of the filter inlet system on the BAE-146 research aircraft and its use for size resolved aerosol composition measurements https://doi.org/10.5194/amt-2019-196 This is the dataset for “Characterisation of the filter inlet system on the BAE-146 research aircraft and its use for size resolved aerosol composition measurements” in Atmospheric Measurement Techniques. The data files include the following: Figure_2.csv This is replicates the inlet efficiency mechanisms and cases that appear in Fig. 2. Figure_3.csv This is replicates the anisoaxial efficiency calculations that appear in Fig. 3. Figure_4.csv This is replicates the flow rate versus altitude data shown in Fig. 4. Figure_5.csv This replicates the processed PCASP-CDP data whcih appears in the snsitivity analysis in Fig. 5. Figure_7.csv This is replicates the SEM data that appears in Fig. 7. Figure_8a.csv This is replicates the SEM size distributions (bypass open and closed) as well as the processed PCASP-CDP size distributions of the bypass comparison that appears in Fig 8a, in both number and area size distribution. Figure_8b.csv This is replicates the SEM size distributions (bypass open and closed) as well as the processed PCASP-CDP size distributions of the bypass comparison that appears in Fig 8b, in both number and area size distribution. Figure_9.csv This replicates the SEM as well as the processed PCASP-CDP size distributions from three different locations that appear in Fig. 9. Figure_10.csv This replicates the size resolved compsition analysis as well as the mineral dust surface area calculation that appears in Fig. 10.In the size resolved composition graphs (as shown in Fig. 10a), bin boundaries have been shown. Figure_11.csv This replictes the size resolved composition graphs from 6 different samples shown in Fig. 11. Figure_C1.csv This replicates the statistical significance sensitivity test shown in Fig. C1.