A sub-GHz LoRa module will never receive 1090 MHz ADS-B. The front-end is filtered and the modem is locked. To listen on another band, you need an SDR.
One question comes up often: can you capture air traffic with a sensor radio module? No, and the reason is physical, not software.
A closed front-end
The module is hardware-filtered to its ISM band. A band-pass filter at the input rejects anything outside the intended range. The 1090 MHz ADS-B signal is attenuated before it even reaches the receiver.
The modem is locked to one modulation and one band. A sub-GHz LoRa module demodulates LoRa around 868 or 915 MHz. It has neither the mixer nor the receive chain for 1090 MHz. No update unlocks it.
The cumulative logic
To listen on a different band, you need an SDR: a wide receiver where frequency and demodulation happen in software. That is the right tool for multi-band passive reception.
This logic explains the ban on transmitting in aircraft. The risk is not a single device, but the sum. Dozens of uncoordinated transmitters add up to noise that can disturb aeronautical bands. The rule targets the aggregate, not the unit.