31. An unusual feature of each gunner's cockpit was a duralumin , telescopic mast. 32. The IA 58 Pucar?is of conventional, all-metal ( mainly duralumin ) construction. 33. The two-spar wings and tailfins were covered with Wibault-pattern ribbed duralumin sheet. 34. Similarly, the perch poles are made of duralumin , the largest of which is tall. 35. It was built mostly from duralumin with a tubular-membered frame covered by corrugated sheet. 36. Examples of alloys are steel, solder, brass, pewter, duralumin , bronze and amalgams. 37. The whole assembly was encased in a duralumin bomb casing to protect it from bullets and flak. 38. The wings were of duralumin and steel construction with fabric-covered rod-actuated control surfaces. 39. The fuselage was rectangular in cross-section, made of duralumin and covered with duralumin sheet. 40. The fuselage was rectangular in cross-section, made of duralumin and covered with duralumin sheet.
