I agree with Cal Capt. If you start the approach and then figure out you're not finished then climb, limit bank, and ask for vectors to a safe holding area. Don’t do anything until you SAFE, DO NOT DO 360's ON FINAL. You have plenty of time and power (with the operating engine). The only thing limiting your time is fuel and use as much of it as possible. Remember to exhaust every resource and double check each other before you start the landing phase, it's too CRITICAL!!!