Operational Statistics

Operations Records Books (ORBs)

The ORBs are comprised of:

• ‘summary of events’ forms (also known as Form 540)

• ‘detail of work carried out’ forms (also known as Form 541)

• appendices where applicable (which may include operational orders, miscellaneous reports and telegraphed messages)

The Information includes:

• aircraft type and number

• names

• rank of air crew

• names of passengers

• weather conditions

• flight/sortie details