Maintenance LOSA


Maintenance LOSA

A Line Operations Safety Audit (LOSA) is a proactive, formal process that requires expert and highly trained observers to observe operations in real-time and to collect safety-related data on environmental conditions, operational complexity, and human performance in the maintenance facility. Numerous threats exist in the maintenance environment. These threats can emanate from lack of resources, pressure, procedures, and more. A LOSA is an ideal way to identify these threats and understand aircraft maintenance crew responses. LOSA also reveals how errors and undesired states are managed by the crews.

LOSA is confidential and nonpunitive and is not a compliance audit. A LOSA is conducted by a non-threatening company employee (typically another maintenance technician) who takes notes on what is happening during the course of normal maintenance activities. Once all the data are collected then a report is written and recommendations are made to management to both reinforce the positives and improve the negatives. A LOSA enables organizations to manage threats and errors so that those threats and errors do not turn into accidents and incidents in the future. With LOSA, you are being predictive—which is the ultimate form of proactive safety!


LOSA Implementation Package
(we can do it all for you)

Our robust LOSA courses are designed to enable operators to implement a LOSA completely on their own. However, many operators choose our full LOSA Implementation Package. Our LOSA package includes:

  • Continuous access to the TACG LOSA team
  • Preliminary assistance
  • LOSA training for Steering Committee and company (internal) observers
  • Company (internal) observer calibration check/tweak
  • External observers (optional: we can conduct partial, or all, observations)
  • LOSA software
  • Data cleaning and integrity check assistance
  • Data analysis and report writing
  • Presentation of findings and delivery of final report to the Steering Committee
  • Line Operations Safety Audit Data Exchange (LOSADE)


To request more information about our LOSA Implementation package


Maintenance LOSA Course
(we teach you how to do it on your own)




The 10 Operating Characteristics of LOSA:

  • Observations During Normal Maintenance Operations
  • Joint Management/Association Sponsorship
  • Voluntary Crew Participation
  • De-identified, Confidential, and Non-Disciplinary Data Collection
  • Targeted Observation Form
  • Trained and Calibrated Observers
  • Trusted Data Repository
  • Data Verification
  • Targets for Enhancement
  • Feedback Results to the Maintenance Crews


For more information on LOSA, click here