New Delhi: Hindustan Aeronautics Limited (HAL), India’s premier aerospace and defence manufacturer, has officially revised its delivery schedule for two cornerstone indigenous aircraft programs — the TEJAS MK-1A light combat aircraft and the HTT-40 basic trainer.
The revised targets, announced for the financial year ending March 31, 2026, represent a significant downward adjustment compared to earlier projections, reflecting broader supply chain and testing challenges affecting India’s defence manufacturing ecosystem.
Under the updated plan, HAL aims to deliver five TEJAS MK-1A fighters and three HTT-40 trainer aircraft to the Indian Air Force (IAF) by March 2026, marking a substantial decrease from the initial targets of ten fighter jets and twelve trainers.
Background of HAL TEJAS MK-1A Delivery Revision
Hindustan Aeronautics Limited (HAL) is a state-owned aerospace and defence company tasked with the design, production, and maintenance of India’s military aircraft and helicopters.
Over the decades, HAL has been instrumental in advancing India’s “Aatmanirbhar Bharat” (self-reliant India) vision in aerospace, contributing to indigenous jets like the Tejas series, trainer aircraft such as the HTT-40, and upgrade programs on legacy platforms like the Sukhoi Su-30MKI.
HAL TEJAS MK-1A Delivery Revision: Revised Delivery Targets
The Light Combat Aircraft (LCA) TEJAS MK-1A program has seen its delivery target cut by half for FY 2025-26. HAL’s revised projection calls for only five jets to be delivered by March 31, 2026, compared to ten originally planned.
This revision stems from multiple production bottlenecks — most notably engine supply delays. The aircraft relies on F404-IN20 turbofan engines supplied by General Electric Aerospace, and slower deliveries have constrained assembly lines.
Furthermore, the TEJAS MK-1A needs to complete critical weapon trials before formal delivery to the IAF. These tests, which are prerequisites for operational certification, have extended timelines beyond earlier expectations.
HAL TEJAS MK-1A Delivery Revision and HTT-40 Trainer Aircraft Delivery Adjustments
Parallel to the fighter program, HAL’s HTT-40 basic trainer aircraft also saw its delivery target scaled back. The current plan calls for three trainers to be delivered in FY 2025-26, down from an earlier ambition of twelve units.
Like the TEJAS program, the HTT-40 has encountered engine supply constraints, particularly with the TPE331-12B turboprop engines from Honeywell. These delays have slowed production and pushed back planned delivery schedules.
Despite these setbacks, HAL has continued aircraft assembly, with some series production HTT-40 aircraft completing flights using temporary engine configurations ahead of final engine deliveries.
Root Causes of HAL TEJAS MK-1A Delivery Revision
Two major production constraints have driven the revision of delivery schedules:
1. Engine Supply Disruptions: The TEJAS MK-1A’s dependency on foreign-sourced F404-IN20 engines has emerged as the key bottleneck. HAL has received a limited number of engines to date, slowing down overall assembly rates.
For the HTT-40 trainers, Honeywell’s TPE331-12B turboprop engines have been delivered behind schedule, causing similar disruptions.
These constraints mirror wider concerns about India’s reliance on imported critical components for strategic defence platforms, with experts warning of geopolitical vulnerabilities due to limited indigenous engine capability.
2. Testing and Certification Timelines: For the TEJAS MK-1A, the completion of weapon integration and trials adds complexity to delivery readiness. These tests validate the aircraft’s ability to carry and employ mission-critical ordnance and represent an essential step before IAF induction.
Delays in final certification processes have extended planned timelines, leading HAL to adopt a more realistic, albeit reduced, delivery outlook for the current fiscal year.
Orders and Contracts Overview: Despite the curtailed delivery expectations in the short term, the IAF’s long-term procurement demand for the TEJAS MK-1A remains significant:
HAL has secured two separate contracts totaling 180 TEJAS MK-1A aircraft valued at approximately ₹1.1 lakh crore (about USD 13.75 billion).
The first contract, for 83 jets, encompasses deliveries over a four-to-five-year period. The second contract for 97 aircraft is anticipated to begin deliveries from 2027-28 onwards.
On the HTT-40 side, the IAF has placed orders for seventy trainer aircraft, intended to underpin pilot training pipelines and reduce reliance on foreign platforms.
Production Capacity Expansion
To support future ramp-up in deliveries, HAL has expanded its manufacturing infrastructure:
- HAL’s Bangalore facility continues to drive core TEJAS production with an annual capacity of sixteen aircraft.
- In October 2025, the third TEJAS MK-1A production line and second HTT-40 line were inaugurated at HAL’s Nashik facility, boosting yearly output potential.
Combined, these facilities aim to raise TEJAS output to approximately twenty-four jets per year, alongside expanded trainer production at Nashik and Bangalore.
About Hindustan Aeronautics Limited (HAL)
Hindustan Aeronautics Limited is India’s premier state-owned aerospace and defence company, established in 1940. HAL designs, develops, and manufactures military aircraft, helicopters, engines, and avionics systems.
It plays a central role in India’s defence modernization and “Make in India” initiatives, producing platforms such as the TEJAS series, HTT-40 basic trainer, and upgrading legacy aircraft like the Sukhoi Su-30MKI. The company also engages in international collaborations and contributes to India’s strategic autonomy in defence manufacturing.
