The term ground-controlled approach is identified in base64 scheme by the sequence Z3JvdW5kLWNvbnRyb2xsZWQgYXBwcm9hY2g=, while the MD5 signature is equal to 78d21a0dff47ebe42c662f1aca77c08e. The ASCII encoding of ground-controlled approach in hexadecimal notation is 67726f756e642d636f6e74726f6c6c656420617070726f616368.