This paper focuses on the wireless transformation of airborne flight test systems, which can solve the problem such as complex cabling, difficult installation and removal, time-consuming setup, and maintenance difficulties encountered during the development of flight testing. The flight test system equipment includes various sensors and storage devices. Leveraging the advantages of SparkLink wireless communication technology—such as low energy, low latency, high throughput, and high reliability—customized compact short-range wireless communication modules were designed. These modules were integrated with sensors, storage devices and customized wireless module, enabling analog-to-digital converted sensor data to be transmitted over the air to the storage units. This achieves wireless recording of flight test data and a wireless flight test system. Test results under laboratory conditions demonstrate that the customized wireless modules can achieve data transmission rates up to 4 Mbps with a transmission delay below 3.5 ms, meeting the performance requirements for airborne flight test data recording.