AD 2004-18-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | DHC-8-311 | Airworthiness Directives; Bombardier Model DHC-8-311 Airplanes |
Unsafe Condition
Omission of several fuselage skin panels from the list of skin panels that must be inspected in a certain revision of the Maintenance Program Support Manual (PSM) could lead to disbonding of the subject skin panels, reducing their load-carrying capacity and resulting in reduced structural integrity of the airplane.
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Required Actions
Review the airplane maintenance records to determine if the most recent bonding integrity inspection was done according to PSM 1-83-7A, Revision 6. If not, perform a resonance frequency inspection of the listed fuselage skin panels. If disbonding is found, repair the panels before further flight.
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Compliance Time
Within 1,000 flight hours or 6 months after the effective date, whichever is first, unless disbonding was previously found, in which case within 6 weeks after the effective date.
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Affected Aircraft
Bombardier Model DHC-8-311 airplanes, serial numbers 202 through 298 inclusive, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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