AD 2012-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Chafing between the wire harness along the wing leading edge and the inboard end rib of the wing leading edge due to insufficient clearance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the wire harness along the wing leading edge for chafing damage in accordance with Bombardier Service Bulletin 84-57-24, Revision A. Repair any chafing damage found before further flight. Relocate and install new anchor nuts on the leading edge.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 3,000 flight hours or 18 months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, serial numbers 4001 through 4382 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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