Electrical Power – Direct Current Electrical Master Box – Inspection
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Airbus Helicopters AS 332 C, C1, L, and L1 must inspect the affected DC electrical master box within 550 flight hours or 26 months from 11 August 2026. If any discrepancies are found during inspection, corrective actions must be completed before the next flight. Installation or reinstallation of affected parts is only permitted after inspection and necessary corrections.
Summary
EASA Airworthiness Directive 2026-0148 is an airworthiness directive addressing Airbus Helicopters AS 332 C, C1, L, and L1 models. It mandates inspection of the direct current electrical master box, specifically the printed circuit boards with part number GC11050 and serial numbers up to 400, to prevent electrical short-circuits that could lead to loss of DC power and control of the helicopter.
What changed
This new airworthiness directive introduces mandatory inspections of the DC electrical master box on affected Airbus Helicopters AS 332 models. It requires inspection within 550 flight hours or 26 months and corrective actions if discrepancies are found, based on Airbus Helicopters Alert Service Bulletin AS332-24-30-0001 and SAFRAN Electrical & Power Vendor Service Bulletin GC11050-24-001.
Why it matters
This directive is critical for aviation professionals because it addresses a safety risk involving potential electrical short-circuits that can cause loss of DC power and essential system failures. Operators and maintenance organizations must ensure compliance to maintain helicopter airworthiness and prevent in-flight control issues related to the DC electrical system.
More for Airbus Helicopters SA 330
All 116- EASA AD 2021-0139R2Doors – Cabin Lateral Sliding Plug Door Emergency Jettisoning System – Inspection / ModificationOct 2, 2026
- EASA AD 2026-0166Fuselage – Splice of Frame X5295 – InspectionAug 19, 2026
- EASA AD 2023-0148R1Main Rotor Drive – Main Gearbox – Replacement; Placards and Markings – ENG1 Training Idle Switch – Installation / Operational RestrictionJul 24, 2026
- EASA PAD 26-086Fuselage – Splice of Frame X5295 – InspectionJul 17, 2026
- EASA AD 2026-0129
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