This paper addresses the development and application of an Autonomous Landing Guidance (ALG) simulation. The autonomous landing scenario requires a pilot to locate, designate, and land on a bomb damaged runway using only on-board systems. The need for simulating the ALG system arose from the United States Air Force, Short Takeoff and Landing (STOL)/Maneuver Technology Demonstrator (S/MTD) Program. To accomplish this task the high fidelity S/MTD aircraft simulation was used in the Large Amplitude Multi-mode Aerospace Research Simulator (LAMARS). Approximately 120 hours of pilot-in-the-loop evaluations were conducted to validate and optimize the ALG simulation. This evaluation was part of a complete analysis of the operational flight control laws conducted at the Flight Dynamics Laboratory (FDL). Recommendations resulting from this testing were implemented in the S/MTD aircraft flight control computer before actual ALG flight tests.