Radio communication is one of the skills that student pilots consistently underestimate until they find themselves in a busy circuit, with three aircraft behind them, ATC waiting for a readback, and no idea what they just heard. Wilson Airport (HKNW) has its own operational patterns, local ATC expectations, and sequencing norms that you will not find in any ICAO phraseology manual.
This guide assumes you know the fundamentals: aircraft callsign format, the phonetic alphabet, standard call structure. What it covers is the Wilson-specific detail that separates pilots who communicate smoothly from those who cause a frequency impasse on a busy Saturday morning.
The frequencies you need before you start the engine
Wilson operates on several frequencies depending on the phase of flight. Have these written on your kneeboard before engine start:
- Wilson Ground: 121.7 MHz, for taxi clearances and ground movement
- Wilson Tower: 118.7 MHz, for all airborne operations within the circuit
- Wilson ATIS: 128.05 MHz, automated terminal information service; listen before every flight
- Nairobi Approach: 119.7 MHz, when departing the Wilson zone toward controlled airspace
Frequencies change. Verify the current frequencies against the Kenya AIP and your school's current local procedures before every flight. Do not rely on memory alone: incorrect frequencies waste time and can create airspace incursions.
Listening to ATIS: what to extract and how to use it
The Wilson ATIS broadcasts current weather, active runway, QNH, and any NOTAM-related information. Each broadcast is identified by a phonetic letter (Information Alpha, Bravo, Charlie, etc.) that cycles through the day as conditions change.
When you initially call Wilson Ground, you are expected to acknowledge the ATIS information you have received: "Wilson Ground, Cessna 5Y-ABC, student pilot, received Information Charlie, request taxi for circuits." If you have not listened to ATIS, you will be asked which information you have, and the answer "not received" costs time and marks you as unprepared.
What to write down from ATIS:
- Information identifier (letter)
- Wind direction and speed (including gusts)
- Visibility and weather (any significant cloud or precipitation)
- Active runway
- QNH (set this on your altimeter before calling Ground)
- Any NOTAMs or special procedures mentioned
The initial Ground call: exactly what to include
A complete, well-structured initial Ground call includes:
- The station you are calling: "Wilson Ground"
- Your aircraft callsign: "Cessna 5Y-JKM", for your first call, use the full registration, not an abbreviated form
- Your position: "on the apron at [school name] ramp", ATC needs to locate you on the airport surface diagram
- ATIS received: "received Information Delta"
- Your request: "request taxi for circuits on Runway 07 Right"
This produces: "Wilson Ground, Cessna 5Y-JKM, on the apron at East African Flying Club ramp, received Information Delta, request taxi for circuits Runway zero seven right."
Common student mistakes: omitting position (ATC cannot give you sensible taxi routing without knowing where you are), omitting ATIS (forces ATC to ask, wastes time), and using abbreviated callsigns on the first call.
Taxi clearances and what to read back
Wilson has multiple taxiways and multiple holding points. A typical taxi clearance sounds like: "Cessna 5Y-JKM, Wilson Ground, taxi to holding point Runway zero seven right via Alpha, hold short of Runway zero seven."
Read back in full: taxiway designator, runway, and holding instruction: "Taxi via Alpha to holding point Runway zero seven right, hold short Runway zero seven, Cessna 5Y-JKM."
Note the order inversion: the readback ends with your callsign, confirming who completed the readback. ATC will not issue further instructions until they hear a correct readback. Partial readbacks delay everyone.
Calling Tower for departure
Before contacting Tower, switch to 118.7 MHz. At the holding point, confirm you have completed your pre-takeoff checks. Then: "Wilson Tower, Cessna 5Y-JKM, holding point Runway zero seven right, ready for departure, circuits."
ATC may clear you immediately, hold you for sequencing, or give you traffic information about an aircraft on final. If you are held: "Cessna 5Y-JKM, hold position, traffic on two-mile final Runway zero seven right." Your readback: "Hold position, 5Y-JKM." Simple, complete, unambiguous.
If cleared for takeoff: "Cessna 5Y-JKM, Runway zero seven right, cleared for takeoff, wind zero eight zero, twelve knots." Readback: "Runway zero seven right, cleared for takeoff, 5Y-JKM." Do not read back the wind: it is information, not an instruction requiring acknowledgement.
In the circuit: position reports and sequencing calls
At Wilson, you are expected to make position reports on downwind unless ATC instructs otherwise. The standard format: "Wilson Tower, Cessna 5Y-JKM, downwind Runway zero seven right, touch-and-go." ATC will either acknowledge, issue a sequence, or give traffic information.
If given a sequence: "Cessna 5Y-JKM, number two, follow the Caravan on right base." Your job is to identify that aircraft visually. If you cannot: "Wilson Tower, 5Y-JKM, unable to identify traffic on base, request vectors or orbit." Do not pretend you have traffic in sight when you do not: the consequences of a mid-air collision are not comparable to any social embarrassment of asking for help.
The go-around call
If you decide to go around (whether initiated by you or requested by ATC), the call is immediate: "Wilson Tower, 5Y-JKM, going around." No further justification is needed. Climb to circuit height, fly the remaining circuit legs normally, and re-establish the sequence with ATC on downwind. If ATC initiated the go-around (as in, instructed you to: "Cessna 5Y-JKM, go around, I say again, go around"), your readback is: "Going around, 5Y-JKM."
Frequency discipline: what not to say
Wilson Tower is a shared frequency with multiple aircraft. Unnecessary transmissions waste airspace. Things that do not require a radio call:
- Acknowledging routine traffic information ("Traffic on your left, Cessna"): ATC expects you to look and continue, not transmit "Roger, looking"
- Commenting on landing quality: the frequency is not for self-evaluation
- Asking questions that are answered on ATIS ("What is the active runway?" when ATIS is available)
The Wilson Airport guide for first-time students covers the airspace environment. Combining clear radio technique with spatial awareness of the Wilson circuit gives you the cognitive bandwidth to fly accurately and communicate confidently, which is the standard your instructor is assessing before any solo endorsement.