What information must be included in an operational flight plan?

The OFP must include aircraft identification, flight rules, aircraft type, equipment, departure and destination aerodromes, route, cruising levels, estimated times, alternate aerodromes, fuel endurance, persons on board, and emergency equipment.

When is it mandatory to file a flight plan?

A flight plan is mandatory for flights requiring air traffic control service, IFR flights in advisory airspace, international flights, flights in designated areas for search and rescue, and night flights away from aerodromes.

Can a flight plan be submitted after take-off?

Yes, if pre-departure submission is not possible, a flight plan can be filed in flight, but it must be received before entering controlled or advisory airspace.

What is the difference between a complete and an abbreviated flight plan?

A complete flight plan covers the entire route and is submitted before departure, while an abbreviated plan provides limited information for a specific segment, often during flight.

Why are operational flight plans important for search and rescue?

OFPs provide vital details about the aircraft, route, and persons on board, enabling efficient search and rescue coordination in case of an emergency.

Operational Flight Plan Requirements

Medium4 min readAir Law

Occasionally Examined

Why this matters

Understanding operational flight plan requirements is crucial for safe flight planning, ensuring regulatory compliance, and enabling effective communication with air traffic services. Proper OFP submission directly impacts flight safety, search and rescue readiness, and operational efficiency.

The operational flight plan (OFP) is a comprehensive document detailing all essential information about a proposed flight, from aircraft identification to route, fuel, and emergency equipment. It ensures that air traffic services, search and rescue, and other relevant authorities have the data needed to manage the flight safely and efficiently. Filing a flight plan is mandatory in many situations, especially for controlled airspace, IFR operations, international flights, and flights over remote or hazardous areas.

Quick Check

Which of the following items is always required in a complete operational flight plan (OFP) for IFR flights?

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In depth

Explanation

What Is an Operational Flight Plan?

An operational flight plan (OFP) in aviation is the formal submission of a flight's intended route, performance, and operational details to air traffic services. It serves as the primary reference for ATC, search and rescue, and coordination with military or adjacent states.

When Is a Flight Plan Required?

A flight plan must be filed before:

Any flight in controlled airspace or where ATC service is provided
IFR flights in advisory airspace
Flights along designated routes for flight information or alerting services
Operations crossing international borders (unless exempt by agreement)
Night flights away from the aerodrome vicinity

Filing is also strongly recommended for:

Flights over water beyond 10 NM from the coast
Operations over sparsely populated or remote terrain

Key Contents of an OFP

An ICAO-compliant operational flight plan includes:

Aircraft identification (registration or call sign)
Flight rules (IFR/VFR) and type of flight
Number and type(s) of aircraft, wake turbulence category
Navigation and communication equipment
Departure aerodrome and estimated off-block time (EOBT)
Cruising speed(s) and level(s)
Route to be flown
Destination aerodrome and estimated elapsed time
Alternate aerodrome(s), if required
Fuel endurance (in hours and minutes)
Total persons on board
Emergency and survival equipment
Additional remarks or relevant information

Submission and Updates

Flight plans are typically filed before departure with the appropriate ATS office. In-flight submissions are allowed if pre-departure filing is impractical, but must reach ATS before entering controlled or advisory airspace. Once filed, the plan becomes a 'current flight plan' after amendments and clearances are incorporated.

Why File a Flight Plan?

Flight plans allow ATC to provide separation and traffic management, support search and rescue, and coordinate with military or other authorities. They are a cornerstone of safe, efficient, and coordinated flight operations.

The essentials

Key Points

An operational flight plan (OFP) details all essential aspects of a proposed flight.

Filing is mandatory for controlled airspace, IFR flights, international crossings, and night or remote operations.

Key OFP contents include aircraft ID, flight rules, route, fuel, persons on board, and emergency equipment.

Flight plans support ATC separation, search and rescue, and coordination with military or adjacent states.

OFPs can be filed before departure or, if necessary, during flight before entering controlled airspace.

A current flight plan includes all amendments and clearances after initial submission.

Not all information is required for every flight; requirements depend on flight category and airspace.

Watch out

Exam Traps & Typical Mistakes

Confusing a filed flight plan with a current flight plan—remember, the current plan includes amendments and clearances.

Assuming flight plans are only required for IFR flights—VFR and night flights away from aerodromes may also require them.

Overlooking the need for alternate aerodromes or emergency equipment details in the OFP.

Believing a flight plan is only for ATC use—search and rescue and other authorities also rely on this information.

Forgetting that in-flight filing is allowed but subject to strict timing before entering controlled or advisory airspace.

Test yourself

Example Exam Questions

Question 2Medium

For which of the following operations is filing a flight plan mandatory?

Question 3Easy

What is the primary purpose of the operational flight plan in air law?

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