Jeppesen Letter of Acceptance (LOA) and
Regulatory Certifications

Jeppesen is required to notify our customers of the status of our Letters of Acceptance provided by regulatory authorities. This page is a one-stop access point to Jeppesen LOA information and documentation. Please click on the links below to access a .pdf copy of our LOAs, current Release Statements, and other applicable documentation.

The current Data Definition Document (DDD) is available by contacting your Jeppesen account representative.

All data produced complies with Jeppesen DDD, and/or mutually agreed upon customer data quality requirements.


Type 2 LOA

Jeppesen delivers databases to end users on behalf of some Type 2 LOA holders. Jeppesen does not alter or manipulate data we are delivering on behalf of the Type 2 LOA holder. Jeppesen is simply providing the data updates over the internet via the Jeppesen Distribution Manager application or other delivery method. When performing these services, the Type 2 LOA holder is responsible for the integrity of the data and how it functions in the compatible avionic system. Type 2 LOA holders, and links to their LOA documentation are available below:

Jeppesen Notices and Alerts


Frequently Asked Questions

Q: What is a Letter of Acceptance?

A: There are two types of data supplier acceptance letters. Type 1 acceptance letters are based on generic data requirements agreed upon between the data supplier and the customer and are for data suppliers that are data service providers. Type 2 acceptance letters are based on requirements that ensure compatibility with particular systems or equipment and are for data suppliers that are avionics manufacturers/application integrators.

Type 2 acceptance letters are intended to facilitate the operational approval process or approved maintenance program, and eliminate the operator?s need to re-evaluate compatibility if the data supplier has already assured compatibility. While RTCA/DO-200A applies to both types of acceptance letters, the Type 2 data suppliers have additional requirements to ensure the delivered database is compatible with the DQRs necessary to support the intended function approved for the target application.

Q: What is a Modified Data Report?

A: One of Jeppesen's roles is that of a value added data consolidator when combining source documentation from over 200 countries worldwide. Occasionally inconsistencies or errors are detected within the source documents provided by the state(s). Jeppesen corrects these errors or inconsistencies whenever possible by modifying the state provided data.

Jeppesen is required by regulatory agencies to report Jeppesen Modified Data to our end-users. The listing of current Jeppesen Modified Data is provided below. All data modified by Jeppesen should be considered fit for aeronautical use. Not all LOAs require a Modified Data Report.

Q: What is a Data Definition Document?

A: The Data Definition Document is a Jeppesen created and owned document that is shared with, and mutually agreed upon by, Jeppesen customers defining the data quality characteristics. In some cases, Jeppesen mutually agrees to customer provided data quality requirements in lieu of Jeppesen’s DDD.