When instrument meteorological conditions (IMC) restrict operations to Instrument Flight Rules (IFR) at non-towered, non-radar airports, air traffic control (ATC) uses procedural separation that constrains operations to only one approaching or departing aircraft at a time -the "one-in/one -out" paradigm. The Small Aircraft Transportation System (SATS) breaks the onein/one-out paradigm and expands capacity by allowing multiple, simultaneous operations while achieving a level of safety equal to today's system. The concept that achieves this goal is SATS "Higher Volume Operations" (HVO).Characteristic to SATS HVO is the establishment of a Self-Controlled Area (SCA) , which would be activated by ATC around designated nontowered, non-radar airports. During periods of poor visibility, SATS pilots would take responsibility for separation assurance between their aircraft and other similarly equipped aircraft in the SCA. Using onboard equipment and simple instrument flight procedures, they would then be better able to approach and land at the airport or depart from it. This concept would also require a new, ground-based automation system, the Airport Management Module (AMM) typically located at the airport that would provide appropriate sequencing information to the arriving aircraft.This paper provides an analysis of Flight Technical Error (FTE) from recent SATS experiments, called the Higher Volume Operations (HVO) Simulation and Flight experiments, which NASA conducted to determine pilot acceptability of the HVO concept for normal operating conditions. Reported are FTE results from simulation and flight experiment data indicating the SATS HVO concept is viable and acceptable to low-time instrument rated pilots when compared with today's system (baseline). Described is the comparative FTE analysis of lateral, vertical, and airspeed deviations from the baseline and SATS HVO experimental flight procedures. Based on FTE analysis, all evaluation subjects, low-time instrument-rated pilots, flew the HVO procedures safely and proficiently in comparison to today's system. In all cases, the results of the flight experiment validated the results of the simulation experiment and confirm the utility of the simulation platform for comparative Human in the Loop (HITL) studies of SATS HVO and Baseline operations.