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During a long range intercontinental commercial flight from Europe to Australia the neutron and photon dose equivalents have been evaluated using a pair of electronic pocket dosemeters ALOKA PDM-313 and ALOKA PDM-111, respectively. A temperature compensated superheated emulsion (bubble) detector and an aluminium oxide TL-Dosimeter were carried together for the purpose of in-flight calibration of the electronic dosemeters. We have evaluated the radiation doses during flights from various cities in the northern hemisphere to Sydney (Australia). The results were compared with the cosmic radiation exposure calculated using the EPCARD and CARI 6 flight dose computation codes developed by GSF (Germany) and FAA (USA), respectively. A simple method of aviation dose interpolation based on polynomial fitting has been proposed.