---
title: "Gaganyaan Test Vehicle TV-D1: ISRO Abort Test"
description: "TV-D1, ISRO's 21 October 2023 flight, validated the Gaganyaan crew escape system and crew module recovery — the first of four abort tests before crewed flight."
url: "https://modeldiplomat.com/learn/glossary/gaganyaan-test-vehicle-d1"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- TV-D1 was ISRO's October 2023 uncrewed flight test that validated the Gaganyaan crew escape system and crew module recovery before human spaceflight.
- What did the TV-D1 mission actually test?
- How does TV-D1 differ from the 2018 Pad Abort Test?
- Why did ISRO hold the TV-D1 launch on the morning of 21 October 2023?
- Where does TV-D1 sit in the Gaganyaan timeline?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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On 21 October 2023, ISRO launched the TV-D1 mission from Sriharikota, demonstrating a transonic in-flight abort and recovering the Gaganyaan crew module from the Bay of Bengal with Indian Navy support.

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