The term aeronautical engineer is identified in base64 scheme by the sequence YWVyb25hdXRpY2FsIGVuZ2luZWVy, while the MD5 signature is equal to 5725445a4a025a13ee08ed283cc7a2c1. The ASCII encoding of aeronautical engineer in hexadecimal notation is 6165726f6e6175746963616c20656e67696e656572.