Methods and systems for assessing compliance of aircraft engines

A method of monitoring a set of deployed aircraft engines based on a deviation in actual utilization of the set of deployed aircraft engines from an expected utilization of the set of deployed aircraft engines, the method comprising:

• operating the set of deployed aircraft engines to propel aircraft during flight events, wherein onboard electronic engine controls are respectively associated with each deployed aircraft engine in the set of deployed aircraft engines;
• using the onboard electronic engine controls respectively associated with each deployed aircraft engine in the set of deployed aircraft engines to acquire field data associated with the set of deployed aircraft engines during operation of the set of deployed aircraft engines, the field data including at least one parameter indicating the actual utilization of the set of deployed aircraft engines during the flight events, acquiring field data including:
• performing on-board status monitoring of the set of deployed aircraft engines during the flight events using the electronic engine controls respectively associated with each deployed aircraft engine in the set of deployed aircraft engines;
• and
• storing the field data into one or more databases storing digital data;
• establishing a digital communication connection to the one or more databases storing the digital data for the set of deployed aircraft engines, by a computing device via a network, wherein the computing device comprises at least one processor communicatively coupled to a memory device;
• using the digital communication connection to access the digital data for the set of deployed aircraft engines, by the at least one processor via the network;
• selecting, from the digital data, a test population from the set of deployed aircraft engines based on one or more selection criteria, by the at least one processor, each deployed aircraft engine of the set of deployed aircraft engines having associated thereto design requirements indicative of the expected utilization of the set of deployed aircraft engines, and field data;
• selecting the at least one parameter that is present in both the design requirements and the field data of the test population, by the at least one processor, the design requirements comprising design time-series profiles, the field data comprising field time-series profiles;
• comparing by the at least one processor, the field time-series profiles to the design time-series profiles for the at least one parameter using a similarity metric to obtain field statistics;
• comparing the field statistics to expected statistics from the design requirements by the at least one processor;
• generating a compliance assessment output of the test population based on a difference between the field statistics and the expected statistics, by the at least one processor;
• and
• causing a display device to present a table indicating the difference between the field statistics and the expected statistics.