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SkyWare ABX · White paper 02 · Tower & approach

Every Movement, Every Charge

Automated billing for authorities whose revenue comes only from tower, approach and the aerodrome.

01When the aerodrome is the whole revenue base

Many airports, island states and regional authorities provide only tower and approach services. With no upper airspace, there are no en-route or overflight charges to rely on. Revenue depends entirely on what happens within a few miles of the runway: approach, landing, parking and passenger charges.

With such a narrow base, every movement counts. Yet these charges are still often compiled from handwritten tower logs and paper strips, then re-keyed into spreadsheets at month end. A missed movement, an unrecorded parking stay or an unchecked passenger count is revenue that never reaches an invoice.

02Where the revenue leaks

Incomplete movement records

Handwritten logs miss flights, carry illegible callsigns and rarely include the registration or MTOW needed to rate them.

Estimated parking time

On-stand and off-stand times are guessed or never recorded, so parking is under-billed or waived.

Unchecked passenger charges

Passenger numbers come from airline declarations, with no check against the flights that actually operated.

Slow, disputable invoices

Manual compilation delays billing and leaves no evidence when an operator challenges a charge.

03From manual records to automated charges

ChargeManual basis todayWith ABX
Tower and approachTower log entries and paper stripsOne digital movement record, matched to the flight plan, registration and MTOW
LandingHandwritten arrival timesTime-stamped arrivals and departures, rated automatically
ParkingEstimated stay, free time applied by handDuration calculated from on-stand and off-stand times, free periods applied by rule
PassengerAirline declarations, rarely checkedPassenger data reconciled against recorded movements before invoicing

04How ABX captures every charge

The takeaway

When terminal charges are your only revenue, ABX turns every movement into an accurate, auditable invoice, with no new surveillance infrastructure required.

Applies to aerodromes and authorities providing tower and approach services only. Charges and tariff rules are configured to each customer’s published tariffs. ADS-B is optional and used for situational awareness and validation only.