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BayLanka
Case studies

Automated Billing & Financial Management

How onres24 Reduced Billing Errors by 95% and Accelerated Invoice Processing by 80% Processing Thousands of Transactions

onres24 is a cloud-based platform for aviation clubs and fleet management, offering tools for reservations, maintenance, cost tracking, and digital logbooks. Designed for flight schools and operators, it supports multilingual use, real-time calculations, and integrated management dashboards to improve efficiency and transparency.

Challenges

Manual calculation of flight costs, rentals, and fees caused frequent errors and delayed invoicing. Complex billing rules—covering Hobbs time, flight duration, landing fees, and recurring charges—made manual processing of millions of transactions inefficient and unsustainable.

Solutions

We developed an automated billing system designed to streamline financial operations and ensure accurate cost calculations through flexible pricing structures and payment automation. Built with operational efficiency in mind, it offers comprehensive billing management for diverse aviation services.

  • Real-time charter cost calculation during reservation
  • Multiple billing method support (Hobbs meter, flight time, engine time)
  • Static and dynamic cost multipliers for round trips, training flights, and other scenarios
  • Landing fee management for multiple airports
  • Hangar rental billing with flexible intervals and pricing structures
  • Recurring charge automation (club fees, weather service fees)
  • Automated invoice generation with dunning system
  • SEPA payment support for multiple banks

Impact

Reduced billing errors by 95% through automated calculations

Accelerated invoice processing by 80% eliminating manual work

Achieved 95%+ accuracy processing millions of transactions

Automated payment collection improving cash flow

Eliminated billing disputes through transparent cost calculation

Technologies we used

People who worked on

Sajath Ahamed

Developer

Aasim Mohamed

Developer

What our
customers say

"As the chairman of LSV-Vilshofen, I can only recommend that all air sports clubs test the onres24 reservation program for their club. They will soon discover that it is the best system currently available on the market for club and aircraft fleet management.

Perhaps the most important point for all club boards is the seamless license, medical, and competency verification of pilots provided by onres24. Access control for aircraft keys and documents is essential for fulfilling supervisory duties, as no unauthorized person gains access to aircraft keys and paperwork."

Franz Härtel

Franz Härtel

Chairman, Lower Bavaria

Let's talk about your product.

Dr. Markus Lehmann

CEO & Co-Founder BayLanka
markus@baylanka.net

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