Legenda:

1. AV-5L-123 propeller hub 2. propeller shaft 3. reduction gear of Mikulin AM-35A engine 4. venturi 5. engine support structure 6. oil cooler (both sides) 7. dynamo GS-350 8. oil and coolant pump 9. supercharger 10. ShKAS waste links bag (one on left side for both ShKAS; drawn as stransparent) 11. supercharger inlet from wingroot intakes 12. cooling circuit (green) 13. battery (right side only) 14. actuating shafts for oil cooler outlet shutters 15. fuel circuit (yellow) 16. UBS waste shells duct (to a slot on the left of the glycol cooler) 17. air intake deflector of glycol cooler (2 vertical + 2 horizontal blades) 18. glycol cooler 19. cooler outlet flap with actuation mechanism 20. fuel tank emptying out cap 21. back fuel tank 22. seat support structure

23. oxygen bottle (right side) 24. oxygen bottle refuelling hatch (right side) 25. socket for battery recharging on the ground (right side) 26. compressed air bottle (left side; drawn as transparent) 27. tail wheel bi-stable retraction mechanism, actioned by wires 28. shock adsorber 29. retractable tail wheel 30. tail wheel door 31. rudder actuating mechanism 32. rudder hinge 33. tail position light (white) 34. trim fence 35. rudder metallic structure 36. elevators shaft moved by a lever 37. elevator actuating rods 38. side hole for wire aerial 39. ventilation hole 40. rear guide for sliding hood 41. RUN-30A dynamotor for RSI-3  (on left side) 42. RSI-3 radio transmitter (rarely installed); it hides the RU-11A dynamotor (on right side) for RSI-4 radio receiver (installed on the floor) 43. tools pack 44. connection bolt between mid fuselage tubes frame and rear wooden fuselage

45. seat armoured backrest 46. sliding hood 47. side guides for sliding hood 48. radio station control panel 49. sliding hood locking mechanism 50. three-pieces windshield and joint line between its trasparent panels (no frame) 51. PBP-1A gunsight 52. arming handles for UBS (centre) and ShKASs (both sides) 53. instrument panel 54. upper (curved) and lower (angulated) firewalls 55. priming fuel tank for cold starting 56. front fuel tank 57. mast of radio aerial 58. UBS waste links duct and bag (drawn as transparent) 59. UBS ammo box (360 rounds) and rail 60. UBS 12,7 mm gun (centre) and ShKAS 7,62 mm gun (right ShKAS on the background; left one is omitted) 61. ShKAS ammo boxes (2x350 rounds) and rails 62. thermal sleeves for guns barrels 63. glycol (coolant) tank and pipes (green) 64. oil tank and pipes (brown)