Form

Defence air safety occurrence report (DASOR) forms

DASOR forms are to be used to report all air safety related occurrences.

• From: Ministry of Defence and Military Aviation Authority
• Published: 14 November 2014
• Last updated: 17 February 2025
  Show all updates

  1. 17 February 2025

     An updated version of the DASOR technical section form has been published.

  2. 4 November 2024

     An updated version of the DASOR reporting form has been published.

  3. 23 August 2024

     An updated version of the DASOR technical section form has been published.

  4. 9 August 2024

     An updated version of the DASOR Reporting Form has been published.

  5. 8 July 2024

     Version 4.5 of the DASOR Reporting Form and Version 4.1 of the DASOR Birdstrike Form have been published.

  6. 4 March 2022

     New DASOR forms have been published: aeronautical information section, loose article report and unchartered obstruction report. New versions of the other DASOR forms have also been published.

  7. 16 July 2021

     New version of the DASOR update section form has been published.

  8. 8 July 2021

     New versions of the DASOR forms have now been published.

  9. 13 May 2019

     Update to the mobile friendly DASOR reporting form has been published.

  10. 24 April 2019

      New versions of the following forms now available: DASOR investigation section form and DASOR human fatigue form.

  11. 20 February 2019

      Mobile friendly version of the DASOR reporting form has been published.

  12. 20 February 2019

      DASOR forms amended in line with ASIMS updates.

  13. 1 April 2016

      New DASOR forms have been published for use with ASIMS version 3.

  14. 14 November 2014

      First published.

Documents

DASOR aeronautical information section

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1010 KB, 1 page

DASOR airprox form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.11 MB, 3 pages

DASOR air traffic management (ATM) form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.19 MB, 2 pages

DASOR birdstrike form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.02 MB, 1 page

DASOR human fatigue form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 924 KB, 2 pages

DASOR investigation section form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.93 MB, 6 pages

DASOR Laser / HP Illumination form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1020 KB, 1 page

DASOR lightning strike form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.01 MB, 2 pages

DASOR loose article report

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.01 MB, 1 page

DASOR maldrop form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.1 MB, 2 pages

DASOR occurrence review group (ORG) form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.04 MB, 3 pages

DASOR parachuting section form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.3 MB, 3 pages

DASOR reporting form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance

PDF, 898 KB, 3 pages

DASOR serious fault

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.03 MB, 1 page

DASOR supervisors section form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance

PDF, 542 KB, 1 page

DASOR technical section form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 680 KB, 2 pages

DASOR unchartered obstruction report

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1010 KB, 1 page

DASOR update section form

Ref: This form has been tested to work with a web browser i.e. Chrome, Edge. Any issues downloading or using these forms, contact the ASIMS Helpdesk via DSA-MAA-ASIMS@mod.gov.uk in the first instance.

PDF, 1.02 MB, 1 page

Details

Related information:

If you are accessing this internet based site from a Ministry of Defence (MOD) Intranet based system, ie DII, Navystar etc, these forms will not download due to an issue with the MOD firewall which blocks them. Therefore, such users should use the Military Aviation Authority (MAA) website based on the Defence Intranet to access these forms. If you have difficulty locating this site, please contact dsa-maa-mrp enquires@mod.gov.uk for assistance. From an Internet based system, these forms download correctly.

Defence confidential occurrence reporting scheme (DCORS) form