- Make the decision to divert early!
- Once made, choose a prominent feature from which to carry out the diversion. This point can be ahead of you, off to one side or even behind you.
- Draw a line from your divert point to your new destination.
- Make all the necessary calculations - heading, distance, ETA, performance factors (drift down, terrain clearance etc) - based on this diversion point. Also, review the airspace, weather and NOTAMs for the new destination.
- On arrival at your diversion point, turn onto your new heading.
- Transmit your diversion intentions.
- Maintain communication channel 121.5 and 123.45
- Then as per normal navigation techniques to get to your destination.
The Main Message
The diversion is a high workload activity and can lead to stress, especially if you are lost. In most cases you have to cope with new environments and planning requirements.
Success depends on your ability as a pilot to keep a cool head and carefully follow the diversion procedure. Aviate, Navigate, Communicate and Administrate. The following checklist may help with in-flight planning of a diversion.
THE Diversion Checklist
- Sync Heading Indicator
- Fix your location
- Note the Time
- Turn on to an approximate Heading
- Draw a Line and determine the Distance
- Determine True Track
- Assess the drift from the Wind Correction Angle
- Determine the Variation
- Verify True Airspeed on ASI
- Calculate the Magnetic Heading
- Check Altitude (Hemispherical Rule)
- Determine Ground Speed
- Determine Time En-route
- Determine Fuel Burn
- Contact ATC and Advise of New Destination and ETA if applicable
- Check Aeronautical information for New Destination Info.
- AWS / ATIS
- CTAF / Tower
- Airport Elevation
- Traffic Pattern Altitude