Electrical and Electronic Common Installation — Harness Routing into Centre Wing Box — Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A320 models must modify the harnesses 17QT and 18QT in accordance with Airbus Service Bulletin A320-92-1121 within 144 months from the effective date of 3 August 2018. Maintenance teams should review the service bulletin instructions and schedule the modification to ensure compliance before the deadline. Requests for alternative compliance methods can be submitted to EASA if properly justified.
Summary
EASA Airworthiness Directive 2018-0155 is an official regulatory document addressing Airbus A320-214, A320-216, A320-232, and A320-233 aeroplanes that have incorporated Airbus modification 155636 but not modification 158379. This directive focuses on the electrical and electronic common installation, specifically the harness routing into the centre wing box. It mandates a modification to prevent potential safety hazards related to fuel tank ignition.
What changed
EASA Airworthiness Directive 2018-0155 introduces a required modification to the harnesses 17QT and 18QT of the common fuel quantity indicating system by installing longer spacers and additional clamps. This change corrects previously undetected contact points between harnesses and the centre tank structure that could lead to chafing and ignition risks in the fuel tank. The modification is detailed in Airbus Service Bulletin A320-92-1121.
Why it matters
This directive is critical for aviation professionals because it addresses a latent safety risk that could result in a fuel tank explosion due to lightning strikes combined with harness chafing. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and prevent catastrophic failures. Compliance with this AD is mandatory under European regulations, impacting maintenance planning and safety management.
More for Airbus A320
All 286- EASA PAD 26-123Fuselage – Forward Fuselage Skin Panels – InspectionOct 13, 2026
- EASA PAD 26-113Engine – High Pressure Turbine Front Seal – InspectionSep 23, 2026
- EASA AD 2026-0176Electrical Systems Installation – Battery Retaining Rods – Identification / ReplacementSep 11, 2026
- EASA AD 2026-0144R1Stabilizers – Rudder Outer Skin – InspectionSep 11, 2026
- EASA PAD 26-102Fuselage – Cockpit Floor Structure – InspectionsSep 9, 2026
Get the next one by email
New ADs and bulletins for Airbus A320, summarized like this page, every Monday.