- To ensure that main aircraft surfaces are in adequate position relative to surface control levers.
‐ To check that there are no leaks e.g. engine drain mast, hydraulic lines.
‐ To check the status of the essential visible sensors i.e. AOA, pitot and static probes.
‐ To observe any possible abnormalities on the landing gear status:
• Wheels and tires status (cut, wear, cracks)
• Safety pins are removed
• Brakes status (Brake wear pin length with parking brake ON)
This is from FCTM. If you directly go out you cannot perform the first and the last check correctly. If that's accepted by your airline then it's OK not if it's an opinion of an individual.