# Finnish Air Force McDonnell Douglas FA-18C Hornet HN-442 Royal International Air Tattoo 2025 01

- By: Julian Herzog (Website)
- Date: 2025-07-19
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Finnish_Air_Force_McDonnell_Douglas_FA-18C_Hornet_HN-442_Royal_International_Air_Tattoo_2025_01.jpg)
- Rights: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/0/04/Finnish_Air_Force_McDonnell_Douglas_FA-18C_Hornet_HN-442_Royal_International_Air_Tattoo_2025_01.jpg/1920px-Finnish_Air_Force_McDonnell_Douglas_FA-18C_Hornet_HN-442_Royal_International_Air_Tattoo_2025_01.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

An F/A-18 Hornet performs a high-angle-of-attack manoeuvre during an air show display, with condensation revealing vortices shed from the leading-edge root extensions in humid air. Condensation forms due to near-adiabatic expansion in the core of the vortex leading to a drop in temperature in the air. The aircraft is a Finnish Air Force McDonnell Douglas F/A-18C Hornet (reg. HN-442, serial no. 1459/FNC042 ) flying a display at the Royal International Air Tattoo 2025.