Position report and FIS request in a remote VFR corridor
You are flying a Piper PA-28 VFR from Miri to Brunei at 4,500 feet, tracking along the coast. You have been in contact with Brunei Approach on 124.1 but are now leaving radar coverage. The controller says: "Piper 5678, radar service terminated, remain this frequency, next report at the coast waypoint." You are 12 nm from the waypoint. Ten minutes later, weather ahead shows a build-up of cumulus with visible rain shafts, and you can see terrain rising to your right. You have no weather radar and your GPS is functioning. Fuel allows about 1 hour 40 minutes of endurance.
1. Give the position report you should make at the waypoint, and explain why each element matters to the controller.
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A standard report contains: identification, position, time, altitude, next position and ETA, and any relevant remark.
Example: "Brunei Approach, Piper 5678, coast waypoint at 24, 4,500 feet, estimating Brunei overhead at 42, request weather information."
Why each matters: identification lets the controller match you to the flight progress strip; position and time confirm you are where expected and allow the controller to detect a deviation or overdue aircraft; altitude confirms your level and assists traffic information; the next position and ETA allow the controller to predict when you will next call and to warn other aircraft; the request tells the controller what you need. Because radar service has been terminated, the controller is relying entirely on your reported position, so accuracy and prompt reporting are essential.
2. You decide to divert around the weather. What should you tell ATC, and what are your options if you cannot maintain VFR?
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Tell ATC before or as you deviate: "Piper 5678, deviating 10 miles right of track to avoid weather, will report when back on track." State the direction and approximate distance so the controller can assess the effect on other traffic. If the deviation takes you outside the airspace or towards terrain, say so and request a higher or lower level.
If VFR cannot be maintained, do not press on. Options: turn back towards clearer conditions; request a special VFR clearance if within controlled airspace and the unit can provide it; request an IFR clearance if you are qualified and equipped; or land at a suitable aerodrome. If conditions deteriorate suddenly and you need priority, declare an urgency condition: "Piper 5678, PAN PAN, PAN PAN, PAN PAN, weather, request immediate assistance." Never descend into cloud or continue towards rising terrain without a positive plan.
3. The controller asks you to report a PIREP. What information should you include, and why is it useful?
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Include: time, position, altitude, type of aircraft, and the observed conditions - cloud base and tops if known, precipitation type and intensity, visibility, turbulence, icing, and the effect on your flight.
Example: "Piper 5678, 24, 4,500 feet, PA-28, moderate rain shower ahead, cloud tops estimated 8,000 feet, visibility 5 km in rain, light turbulence."
This is useful because ground-based observations do not capture conditions along remote routes, and other pilots and ATC can use the report to plan. Be factual and avoid exaggeration; if you cannot see the cloud tops, say estimated. A good PIREP may prompt ATC to pass information to following traffic or to advise a different level.