Flight Controls - Electrical Harnesses W126 and W127 - Inspection
- Published
- Effective
- Deadline
- Replaces
- 2022-04-01
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Embraer ERJ 170 aircraft must inspect the routing of electrical harnesses W126 and W127 within 12 months after April 29, 2022, and correct any discrepancies before the next flight. Compliance must be performed following the instructions in Embraer Service Bulletin 170-27-0062, revision 02, or later ANAC-approved revisions. Records of compliance should be documented in the aircraft maintenance logbook.
Summary
The Brazilian Airworthiness Directive AD No. 2022-04-01R1 is an official regulatory document issued by ANAC that mandates inspection and correction of the electrical harnesses W126 and W127 routing on Embraer ERJ 170 series aircraft, including models 170-100 LR, SE, STD, SU, and 170-200 LR, STD, SU, LL with serial numbers 17000002 through 17000914. This directive aims to ensure proper segregation of critical electrical harnesses to maintain aircraft safety and compliance with airworthiness standards.
What changed
This AD revision cancels and supersedes the previous AD No. 2022-04-01 by expanding or modifying the applicability to include additional aircraft serial numbers. It introduces a requirement for inspection and correction of the routing of flight control electrical harnesses W126 and W127 according to the latest Embraer Service Bulletin 170-27-0062, revision 02, dated August 3, 2022.
Why it matters
This directive is critical for aviation professionals because incorrect routing of flight control electrical harnesses can compromise the segregation of critical systems, potentially affecting flight safety. Operators and maintenance organizations must ensure compliance to avoid unsafe conditions and regulatory penalties. The AD also provides clear guidance on acceptable alternative methods of compliance, facilitating proper maintenance planning and execution.
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