Maintenance of the D-30 Commercial Aero Engines Series 2 & 3, TV2-117A and TV2-117AG Helicopter Engines
In-service technical support of D-30 Series 2 and 3 engines at Tu-134À, Tu-134B aircraft and TV2-117A, TV2-117AG turboshaft engines at Mi-8 helicopters is conducted by the Customer Support Department of Perm Engine Company and Motorservice-PM using traditional systems.
Warranty service - applies to the engines overhauled by Perm Engine Company within the warranty life and warranty time of service.
Service support under contracts with airlines - applies to the engines after expiration of their warranty lives and to the engines overhauled by commercial aviation overhaul plants.
Extension of lives in hours, cycles and calendar time of service due to high reliability after survey of technical condition in compliance with approved technical documentation.
Helicopter Mi-8 power unit consists of two engines and gearbox VR-8A. 
BASIC TECHNICAL DATA OF TV2-117AG ENGINE AND ITS MODIFICATIONS
Take-off mode
Power, h.p. 1500
Specific fuel consumption, g/h.p.۰h. 275
Power turbine speed, rpm 2000
Compressor pressure ratio 6.6
Air flow, kg/s 8.0
Cruise mode
Specific fuel consumption, g/h.p.۰h. 310
Overall dimensions (length, width, height), mm 2843*550*748
Dry mass, kg 334
DESIGN FEATURES OF TV2-117AG ENGINE
Axial-flow 10-stage compressor
- 2-stage compressor turbine
- 2-stage power turbine
- Annular combustion chamber with eight fuel injection nozzles and two starting igniters
Basic technical data and design features of D-30 engines are given on web-page "D-30 Turbojet by-pass aero engine".
