The Essential Documents Required On Board an Aircraft
- wifiCFI
- Dec 17, 2025
- 3 min read
Updated: Dec 19, 2025
Whether you’re a student pilot, aircraft owner, or aviation enthusiast, understanding the documents required on board an airplane is fundamental to safe and legal flight. Aviation authorities around the world require specific paperwork to be present in the aircraft at all times, ensuring the aircraft is airworthy, properly registered, and operated within approved limits.
A common memory aid used by pilots is ARROW, which helps recall the required documents. Below, we’ll walk through each required item, what it is, and why it matters.
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1. External Data Plate
The external data plate is permanently affixed to the aircraft, typically near the tail or fuselage.
What it includes:
Aircraft manufacturer
Model designation
Serial number
Why it matters:
The data plate uniquely identifies the aircraft. Unlike paper documents, it cannot be removed and serves as a permanent reference for maintenance, registration, and regulatory compliance.
2. Airworthiness Certificate
The airworthiness certificate is issued by the aviation authority and must be displayed in the aircraft, usually near the cabin entrance or cockpit.
Key points:
Confirms the aircraft meets its approved design
Indicates the aircraft is in a condition for safe operation
Remains valid as long as maintenance and inspections are kept current
Why it matters:
Without a valid airworthiness certificate, the aircraft may not be legally flown—regardless of how well it performs mechanically.
3. Registration Certificate
The registration certificate proves the aircraft is legally registered with the appropriate authority.
What it shows:
Aircraft registration number (tail number)
Registered owner
Why it matters:
Just like a car’s registration, this document ties the aircraft to its legal owner. An aircraft without valid registration is not authorized for flight.
4. Radio Station License
The radio station license authorizes the aircraft to operate radio transmitting equipment.
When it’s required:
For international operations (commonly required)
May not be required for purely domestic flights in some countries
Why it matters:
This license ensures the aircraft’s radios comply with international communication regulations, especially when operating across borders.
5. Operating Handbook (POH/AFM)
The Pilot’s Operating Handbook (POH) or Aircraft Flight Manual (AFM) contains manufacturer-approved operating procedures and performance data.
What it includes:
Normal and emergency procedures
Performance charts
Aircraft limitations
Why it matters:
The operating handbook is the authoritative source for how the aircraft must be flown. Pilots are legally required to comply with the limitations and procedures found in this document.
6. Weight and Balance Sheet
The weight and balance sheet shows how much the aircraft weighs and where that weight is distributed.
What it includes:
Empty weight and center of gravity
Loading examples
Approved CG limits
Why it matters:
Improper weight and balance can seriously affect aircraft performance and controllability. This document ensures the aircraft can be safely loaded for each flight.
Final Thoughts
Having the correct documents on board isn’t just about regulatory compliance—it’s about safety, accountability, and professionalism. Before every flight, pilots should ensure all required documents are present, legible, and current.
A quick check of these items helps ensure a smooth ramp inspection, avoids unnecessary delays, and—most importantly—supports safe flight operations.
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