SOP
Pronunciation: S-O-P (spelled out)
Also written as: SOP — Standard Operating Procedure
Standard Operating Procedure — a documented, step-by-step instruction that prescribes how a specific task is to be carried out safely and consistently.
Full Definition
A Standard Operating Procedure (SOP) is a formalised written document that outlines the approved method for performing a specific task or process in airport or ground operations. SOPs ensure regulatory compliance, operational consistency, and safety across all personnel performing the same function. In airside operations, SOPs govern tasks such as aircraft marshalling, fuelling, de-icing, and vehicle operation. Editors working on SOPs must ensure that action steps are written in the imperative mood, numbered sequentially, and free of ambiguous language. The abbreviation SOP is always rendered in capitals.
Usage
Usage note: Always expand on first use: 'Standard Operating Procedure (SOP)'. Use the imperative mood in step instructions (e.g., 'Confirm,' not 'Operator should confirm'). SOPs are binding; guidelines are advisory — do not conflate the two.
In Context
- "The revised SOP for aircraft fuelling must be approved by the Safety Manager before distribution." — Document Control Register
- "Editors must ensure that all SOP steps are numbered and written in the active imperative voice." — Technical Writing Style Guide