The term shuttle helicopter is identified in base64 scheme by the sequence c2h1dHRsZSBoZWxpY29wdGVy, while the MD5 signature is equal to 7c9fe4dc52afc8bb3bf9d8a6e8191ac5. The ASCII encoding of shuttle helicopter in hexadecimal notation is 73687574746c652068656c69636f70746572.