The BRM Aero Bristell NG 5, now called the Bristell Classic, is a Czech low-wing, two-seat in side-by-side configuration, single engine in tractor configuration, ultralight and light-sport aircraft that was designed by Milan Bristela and is produced by BRM Aero.

[2][3][4] The aircraft is made from aluminium and features a 130 cm (51 in) wide cabin at the shoulder, with a bubble canopy over the cockpit.

The safety notice states "aircraft may not meet the LSA standards as it does not appear to have been adequately tested" and that "the manufacturer has been unable to provide satisfactory evidence that the design is compliant with the requirements of the ASTM standards applicable to light sport aircraft.

"[11] The Irish Air Accident Investigation Unit report in May 2022 on the crash of an NG 5 Speed Wing in June 2019, resulting in the death of the two occupants, and found that incorrect weight and balance information supplied by the manufacturer was a contributory factor to the crash and recommended that BRM Aero revise and enhance the operating guidelines for the aircraft.

[12][13] On 21 June 2021 CASA issued a notice indicating that the manufacturer had provided data on spin testing and had also amended its weight and balance information provided to builders and owners, including changing the datum from the wing leading edge to the engine firewall.