Wings Taking Flight · Pilot case study

Pilot case study

Flying VFR to IFR outside UK

This case involves a routing adjustment for a Cirrus SR22 pilot during a first-time flight to the Channel Islands to avoid airspace conflicts near Heathrow Airport.

Reviewed for accuracy 1 September 2026 · By Wings Taking Flight Editorial Team

This case involves a routing adjustment for a Cirrus SR22 pilot during a first-time flight to the Channel Islands to avoid airspace conflicts near Heathrow Airport.

1. Situation

A pilot was preparing for the first-ever flight to the Channel Islands from an untowered airport, departing under Visual Flight Rules (VFR) and planning to transition to Instrument Flight Rules (IFR) in-flight.

The initial routing provided by ForeFlight indicated a path that was in close proximity to Heathrow Airport.

Concerns arose regarding potential airspace conflicts if the flight plan was opened only after departure, particularly because of the VFR-to-IFR transition.

2. Task

The task was to ensure that the flight plan was properly adjusted to avoid potential airspace conflicts with Heathrow Airport and to facilitate a smooth transition from VFR to IFR.

The pilot needed to establish contact with the appropriate air traffic control (ATC) service by phone to discuss and resolve routing concerns before departure.

3. Action

The pilot conducted the following actions:

  • Contact Information Search:

    The pilot searched online for the contact numbers for London Information and London Area Control. Two numbers were found: +44 23 8040 1110 for London Information and +44 1489 612420 for London Area Control.

  • Phone Call:

    The pilot decided to call the London Information number, as it was typically the service used for flight planning and coordination from untowered airports.

  • Discussion:

    Upon calling London Information, the pilot discussed the potential issue of the flight path being too close to Heathrow. The pilot expressed concerns about the implications of opening the flight plan only after departure and sought advice on how to amend the routing to avoid conflicts.

  • Flight Plan Adjustment:

    London Information reviewed the situation and recommended a revised routing based on the Standard Routes Document, which is an Excel Spreadsheet outlining commonly used routes to avoid high-traffic areas. The pilot received guidance on a new flight path that ensured safe separation from Heathrow’s airspace.

4. Result

The flight plan was successfully updated to reflect the new routing recommended by London Information.

This adjustment mitigated potential airspace conflicts and ensured compliance with airspace regulations.

The pilot departed VFR and transitioned to IFR as planned.

The revised routing allowed for a smooth and uneventful flight to the Channel Islands.

This case underscores the importance of pre-flight planning and proactive communication with ATC services when departing from untowered airports, especially when transitioning from VFR to IFR.

Early contact with ATC and verification of flight routing are crucial in avoiding potential conflicts and ensuring a safe flight.

This case also highlights the need for pilots to be familiar with the appropriate ATC services to contact based on their flight's specific requirements.

Warning signs to notice earlier

  • A flight-planning application proposes a route without confirming that ATC will issue it.
  • The planned change from VFR to IFR depends on airborne coordination near complex controlled airspace.
  • Telephone numbers or unit responsibilities are taken from an informal search rather than current official information.

Decision analysis

A filed route is not a clearance, and an airborne request does not guarantee that an IFR clearance will be available at the planned point. The pilot must be able to remain safely VFR and outside controlled airspace until a clearance is received and understood. Weather, terrain and fuel must support that contingency.

Pre-flight coordination can clarify likely routing, but it does not replace the clearance delivered to the aircraft. Contact details and flight-plan procedures should come from current official sources because responsibilities and numbers can change.

Safer alternatives to discuss

Compare a ground-issued IFR option, a later transition point and an entirely VFR or delayed flight. For each, identify controlled-airspace boundaries, weather requirements, communication coverage and fuel. Select a plan that remains safe if the expected clearance or routing is unavailable.

Instructor or group debrief

  1. Where can the aircraft remain safely VFR while waiting?
  2. Which part of the plan incorrectly treats expected routing as assured?
  3. How will current contact and filing procedures be verified?
  4. What fuel and weather margin supports a refused or delayed clearance?

Do not copy actions from this learning scenario into an aircraft checklist. Transfer the decision-making lesson, then use current official information, approved aircraft procedures and qualified instruction for the operation itself.