As next project, Lambach designed a small single-seat biplane intended for aerobatics. It was the intention that at aerobatic contests held in the Netherlands it could beat the German competition. For construction of this new plane, designated as HL-2, Lambach founded the Lambach Aviation works. It was housed in the ‘Starlift’ elevator factory at Voorburg near The Hague. The HL-2 was flown for the first time from Ypenburg airfield on 4 May 1937 by Hein Schmidt-Krans, carrying the civil registration PH-APZ. The plane showed to have excellent flying characteristics, but because there was little time to practice for the next aerobatic contest held at Eelde airfield it scored a 3rd place only with German pilots on 1st and 2nd place. Pilot on the HL-2 during this event was again Schmidt-Crans.
After this contest it was handed over to the national aviation school NLS for training of future aerobatic pilots. However, during the 1938 aerobatic contest the Germans won again very convincingly! Pilot of the HL-2 on this occasion was Dick Asjes who finished at the 7th and last place. Because of the worsening international situation no contest was held in 1939. During the five-days war in May 1940 the HL-2 was destroyed at Ypenburg by German bombs. Although Hugo Lambach designed as the HL-3 an attractive high-wing twin-engine passenger plane the Lambach factory was soon closed and Hugo Lambach joined the Fokker aircraft works. He died in July 1972.
Replica: Delft Student Aeroclub Lambach HL.II Replica