Line Operations Safety Audit (LOSA) Training

TACG offers LOSA training and program implementation for cockpit, cabin, helicopter, military, ramp, and maintenance operations

What Is LOSA?

A Line Operations Safety Audit (LOSA) is a 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.

Why should my airline adopt a safety program that is not mandated by our regulating authority?
True, LOSA is not mandated by regulation in most States. However, a LOSA program is highly recommended by IATA for airlines that intend to be listed in the IOSA Registry. The IATA Operational Safety Audit (IOSA) is the benchmark for global safety management in airlines. That makes a strong statement.

We already do line audits, wouldn’t LOSA be redundant and a waste of our money and resources?
Absolutely not! You may be conducting similar audits, but they are not using the LOSA methodology. The difference is that your audits are probably conducted to satisfy a compliance check. The checklist probably has lots of boxes to be checked off by the auditor, and there very well may be punitive measures doled out to violators. A pilot line check comes to mind. That is not LOSA.

To say that you are conducting a true LOSA audit, the following primary criteria must be met. Your LOSA:

  • Must be based on the Threat and Error Management Model (TEMM)
  • Is not being treated as a regulatory compliance audit (box checking)
  • Must be confidential and non-punitive

TEMM is the fundamental building block for LOSA. TEMM allows trained observers to observe crews in real time to collect safety data related to the handling of Threats, Errors, and Undesired States. Observer narratives and crew interviews are also collected in the process.  

A representative sample of the operation is audited, typically over a 2-3 month period. Once all the data are collected, they are then analyzed and a full report is written. All of the data remain confidential and the process ensures that there is no way to identify individual crews with the observations.

LOSA is a proactive safety tool that can pay huge dividends. Many of our airline clients have identified significant threats and error-handling issues in their operating environments that they were blinded to previously. And once identified, they have made management-approved, data-driven changes based strictly on the LOSA results. Many of these issues were not identified through regular compliance audit channels. These airlines have boasted that a LOSA more than pays for itself by reducing risks and improving safety in a way that a regular compliance audit simply cannot. And many airlines with a formal LOSA program are also enjoying reduced hull insurance premiums, too!


LOSA Complements FDM To Give The Safety Manager A Complete Picture

Many safety managers proclaim that their Flight Data Monitoring (FDM) program is all they need to get the big picture of what’s going on with their fleet in the real world. Well, that’s not entirely true. While FDM can provide excellent data, the data are still limited to the “what” as opposed to the “why” it is happening. As an example, a significant amount of unstablized approaches at a particular airport may be showing up in the FDM data, but these “0’s and 1’s” don’t do much to help us to understand the contributing factors leading up to these unstablized approaches.  

A Line Operations Safety Audit (LOSA) is a great tool to complement your FDM data because LOSAs, which are conducted in real-time using trained observers, allow you to put words to the numbers. LOSA observers actually see what’s happening and are recording their observations on a structured LOSA form. Are the unstablized approaches due to ATC issues? A Procedural problem? Checklist flow? These are things that FDM by itself cannot capture. But, by combining FDM with LOSA, you will have a much more robust picture and thus can take a more pragmatic approach to correcting any issues.


LOSA Benefits

  • LOSA focuses on normal (natural) operations
  • LOSA is confidential and non-punitive
  • LOSA is predictive (when you are being predictive you are being very proactive!)
  • LOSA incorporates the principles of Threat and Error Management
  • LOSA is complementary to other reactive/proactive/predictive safety data collection programs
  • LOSA is viewed very favorably by insurance companies and most offer reductions in insurance premiums for organizations that have a LOSA program in place
  • LOSA is highly recommended by IATA for airlines that intend to be listed in the IOSA Registry
  • LOSA is an important element of your Safety Management System
  • CRM and Human Factors courses can be continuously updated using data obtained from your LOSA results (evidence-based training)

LOSA Courses and Implementation Packages




For additional information on how a LOSA program can benefit your aviation organization, please contact us