---
title: "GROUP 4 GAS BALLOONS — Part-66 · Avioverse"
description: "GROUP 4 GAS BALLOONS TC Holder Model Note BALLONBAU WÖRNER GMBH K-STU/1000 ELA1 BALLONBAU WÖRNER GMBH K-STU/1260 ELA2 BALLONBAU WÖRNER GMBH K-STU/1680…"
url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-amc-to-annex-iii-part-66/group-4-gas-balloons"
---

# GROUP 4 GAS BALLOONS

Annex III (Part-66) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

IR Implementing rule

## GROUP 4 GAS BALLOONS

| GROUP 4 GAS BALLOONS         |                |                             |
| ---------------------------- | -------------- | --------------------------- |
| TC Holder                    | Model          | Note                        |
| BALLONBAU WÖRNER GMBH        | K-STU/1000     | ELA1                        |
| BALLONBAU WÖRNER GMBH        | K-STU/1260     | ELA2                        |
| BALLONBAU WÖRNER GMBH        | K-STU/1680     | ELA2                        |
| BALLONBAU WÖRNER GMBH        | K-STU/300      | ELA1                        |
| BALLONBAU WÖRNER GMBH        | K-STU/630      | ELA1                        |
| BALLONBAU WÖRNER GMBH        | K-STU/780      | ELA1                        |
| BALLONBAU WÖRNER GMBH        | K-STU/945      | ELA1                        |
| BALLONBAU WÖRNER GMBH        | NL-STU/1000    | ELA1                        |
| BALLONBAU WÖRNER GMBH        | NL-STU/280     | ELA1                        |
| BALLONBAU WÖRNER GMBH        | NL-STU/380     | ELA1                        |
| BALLONBAU WÖRNER GMBH        | NL-STU/510     | ELA1                        |
| BALLONBAU WÖRNER GMBH        | NL-STU/640     | ELA1                        |
| BALLONBAU WÖRNER GMBH        | NL-STU/840     | ELA1                        |
| CAMERON BALLOONS LIMITED     | GB 1000        | ELA1                        |
| CAMERON BALLOONS LIMITED     | TGB-1150       | Tethered gas balloon        |
| LINDSTRAND TECHNOLOGIES LTD. | 105G           | ELA1                        |
| LINDSTRAND TECHNOLOGIES LTD. | 14M            | ELA1                        |
| LINDSTRAND TECHNOLOGIES LTD. | 203M           | ELA2                        |
| LINDSTRAND TECHNOLOGIES LTD. | 77M            | ELA2                        |
| WITHOUT TC HOLDER — ORPHANED | K-1050/3-Ri    | ELA1                        |
| WITHOUT TC HOLDER — ORPHANED | K-1260/3-Ri    | ELA2                        |
| WITHOUT TC HOLDER — ORPHANED | K-1680/4-Ri    | ELA2                        |
| WITHOUT TC HOLDER — ORPHANED | K-630/1-Ri     | ELA1                        |
| WITHOUT TC HOLDER — ORPHANED | K-780/2-Ri     | ELA1                        |
| WITHOUT TC HOLDER — ORPHANED | K-945/2-Ri     | ELA1                        |
| AERONAUTICAL CENTER AUGUR    | AL-30          | ELA2 (Tethered gas balloon) |
| AEROPHILE SAS                | AEROPHILE 5500 | ELA2 (Tethered gas balloon) |
| BALLONBAU WÖRNER GMBH        | FK-5500/STU    | ELA2 (Tethered gas balloon) |
| BALLONBAU WÖRNER GMBH        | FKP-STU/280    | ELA1 (Tethered gas balloon) |
| BALLONBAU WÖRNER GMBH        | FKP-STU/380    | ELA2 (Tethered gas balloon) |
| BALLONBAU WÖRNER GMBH        | FKP-STU/510    | ELA2 (Tethered gas balloon) |
| BALLONBAU WÖRNER GMBH        | FK-STU/280     | ELA1 (Tethered gas balloon) |
| LINDSTRAND TECHNOLOGIES LTD  | 197-T (PTB)    | Tethered gas balloon        |
| LINDSTRAND TECHNOLOGIES LTD. | 203T           | ELA2 (Tethered gas balloon) |
| LINDSTRAND TECHNOLOGIES LTD. | 9T             | ELA1 (Tethered gas balloon) |
| LINDSTRAND TECHNOLOGIES LTD. | LBL 203P       | ELA2 (Tethered gas balloon) |

IR — Regulation (EU) No 1321/2014 · ED Decision 2023/019/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

[All rules in APPENDICES TO AMC TO ANNEX III (Part-66)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-amc-to-annex-iii-part-66)

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.