AD 2008-03-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna | Aircraft Company Models 525 | Airworthiness Directives; Cessna Aircraft Company Models 525, 525A, and 525B Airplanes |
Unsafe Condition
Leaking of the cockpit-mounted pilot relief tube caused corrosion of the airplane structure, which could lead to structural degradation and structural failure of the airplane with consequent loss of control.
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Required Actions
Inspect the lower wing skin structure, forward wing spar, lower fuselage skin, fairings, and external fairing frames for corrosion. Repair any damage found. Apply a corrosion inhibitive sealant to the fuselage fairings before reinstalling. Disable the cockpit-mounted pilot relief tube.
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Compliance Time
Before further flight.
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Affected Aircraft
Cessna Aircraft Company Models 525, 525A, and 525B airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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