[Correction] Oil — Oil Cooler Air Induction Duct — Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Group 1 TBM 700 aeroplanes must modify and re-identify the oil cooler air induction duct within three months of the effective date, following DAHER AEROSPACE Service Bulletin 70-254-79. Installation of affected parts is prohibited on all TBM 700 aeroplanes from the effective date. Stakeholders should consult the service bulletin and coordinate with DAHER AEROSPACE or EASA for any alternative compliance methods.
Summary
EASA Airworthiness Directive 2018-0133 is a corrective directive addressing the oil cooler air induction duct on DAHER AEROSPACE TBM 700 aeroplanes. It applies to all serial numbers of the TBM 700 and mandates modification of specific oil cooler air induction ducts to prevent ice accumulation. The directive updates the TCDS number and contact details for the Design Approval Holder.
What changed
This directive requires modification of the oil cooler air induction duct by removing the four upper fins to prevent ice buildup, which was identified during flight testing in icing conditions. It introduces a mandatory modification for Group 1 aeroplanes and prohibits installation of affected parts on all TBM 700 aeroplanes. The AD also corrects the TCDS number and updates contact information for DAHER AEROSPACE.
Why it matters
The modification is critical to prevent ice accumulation on the oil cooler air induction duct fin, which can cause increased oil temperature and potentially lead to uncommanded engine in-flight shutdown. Compliance ensures continued airworthiness and safe operation of TBM 700 aeroplanes, reducing the risk of engine failure and loss of control. Operators and maintenance organizations must adhere to this AD to meet regulatory requirements and maintain aircraft safety.
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