Air Ministry and successors: Operations Record Books, Squadrons

AIR 27
Air Ministry and successors: Operations Record Books, Squadrons

Record books in this series provide a daily record of events in each squadron entered on Form 540, with appendices including some photographs (many of which may have different covering dates from those of the books themselves).

Also included are some Operations Record Books (ORBs) for Dominion and allied air force squadrons under British command. Though the system of Operations Record Books started after the First World War few books in this series date from before the mid-1930s.

Please note: Electronic images of AIR 27/1-2893 can be searched and downloaded.


The Operation Record Books are arranged chronologically under each squadron.

Held by:
The National Archives, Kew
Legal status:
Public Record
Physical description:
3719 files and volumes
Access conditions:
Available in microform only unless otherwise stated
Immediate source of acquisition:
Ministry of Defence , from 1973
Series is accruing
Administrative / biographical background:

The object of the Operations Record Book (ORB) was to furnish a complete historical record of a unit from the time of its formation, including an accurate record of operations carried out. Information was thereby collected for future reference with a view to improving the organization, equipment and administration of the Royal Air Force.

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