For over five years, the FAA and major airlines have been taking LOSA principles developed for fixed wing operators and working to apply the same methodology to aviation maintenance operations.
This LOSA methodology is based on threat and error management (TEM). Once threats and errors have been identified in daily routine operations, observation data are analyzed to help design countermeasures to address the identified threats and errors.
Maintenance LOSA (M-LOSA) follows the same workflow and inferential statistical analysis that other types of LOSA practice.