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basic trainer · in_production

HAL HTT-40

L5 (indigenous design) for airframe and avionics integration; L0 for the engine.

Specifications
1.5 t payload1,000 km range410 km/h cruise32,000 ft ceiling1 × Pratt & Whitney Canada PT6A-68B turboprop, 950 shpHartzell 5-blade constant-speed propeller
Maker: Hindustan Aeronautics Limited
Indian partner: Hindustan Aeronautics Limited · Prime designer and manufacturer (indigenous programme)
Country of origin: India
Role: Basic trainer (replacement for HAL HPT-32 Deepak, and supplement for Pilatus PC-7 Mk II). Not a transport aircraft. Included as reference for L5 (indigenous design capability).
Range: Combat radius approximately 400 km; ferry range approximately 1,000 km.
Payload: Trainer; payload not relevant.
Why it matters for India

First indigenous HAL-designed fixed-wing aircraft to enter IAF service in decades. First flight 2016; initial operational capability 2024; IAF ordered 70 aircraft with options for 36 more (contract signed 7 March 2023, ₹6,838 crore; PIB PRID 1904828).

Indian production status

Series production at HAL Bengaluru. Engine (PT6A-68B) imported. Airframe, avionics integration, mission computer all Indian-designed.

Localization depth · 2 systems
  • Fuselage, wing, empennageL5 · Full design + manufacture
    HTT-40 is HAL-designed basic trainer. Airframe and avionics integration are fully indigenous (L5). Engine (PT6A-68B) remains imported.
  • PT6A-68B turbopropL0 · Imported
    PT6A-68B imported from P&WC. GTRE's HTFE-25 engine is targeted at HTT-40-class platforms but is not yet flight-worthy; HTT-40 currently uses imported engine.
Programme milestones · 2
  • 2016-06-01First flightdelivered
  • 2023-03-07IAF contract — 70 aircraft + 36 optionsdelivered
Sources · 3
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