Bulletins
These bulletins contain facts which have been determined up to the time of issue. This information is published to inform the aviation industry and the public of the general circumstances of accidents and serious incidents and must necessarily be regarded as tentative and subject to alteration or correction if additional evidence becomes available.
The reports in each bulletin are published into the following categories:
| Commercial Air Transport: Fixed Wing |
1.1 - Aeroplanes over 5,700 kg MTWA 1.2 - Aeroplanes between 5,700 kg MTWA and 2,250 kg MTWA |
| Commercial Air Transport: Rotorcraft |
2.1 - Rotorcraft over 5,700 kg MTWA 2.2 - Rotorcraft between 5,700 kg MTWA and 2,250 kg MTWA |
| General Aviation: Fixed Wing |
1.3 - Aeroplanes 2,250 kg MTWA or less |
| General Aviation: Rotorcraft |
2.3 - Rotorcraft 2,250 kg MTWA or less |
| Sport Aviation and Balloons |
1.4 - Microlights 3.0 - Others |
Glossary of Abbreviations used in AAIB Bulletins
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