AAIB investigation to Agusta A109E, G-ETPI

Loss of co-pilot’s door window, In flight North of Seaton, Cornwall, 27 June 2019.

• From: Air Accidents Investigation Branch
• Published: 9 January 2020

• Category: Commercial - rotorcraft
• Report type: Bulletin - Correspondence investigation
• Date of occurrence: 27 June 2019
• Aircraft type: Agusta A109E
• Location: In flight North of Seaton, Cornwall
• Registration: G-ETPI

Summary:

During a post-maintenance flight, the left cockpit door window separated from the helicopter. The window had been removed and reinstalled during recent maintenance. The investigation determined that insufficient adhesive had been applied to the rubber retaining seal. In addition, liberal application of high-concentration soap solution during reinstallation likely contributed to the loss of the window, by reducing the frictional ability of the rubber seal to retain the window. As a result of the findings of this investigation, the maintenance organisation has taken four safety actions.

Download report:

Agusta A109E, G-ETPI 01-20

Download glossary of abbreviations:

Glossary of abbreviations

Published 9 January 2020