The term single-propeller plane is identified in base64 scheme by the sequence c2luZ2xlLXByb3BlbGxlciBwbGFuZQ==, while the MD5 signature is equal to e4d67167fd4167b34769ba8677b9a88a. The ASCII encoding of single-propeller plane in hexadecimal notation is 73696e676c652d70726f70656c6c657220706c616e65.