AD Amdt-39-10935
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | DHC-7 and DHC-8 | Airworthiness Directives; Bombardier Model DHC-7 and DHC-8 Series Airplanes |
Unsafe Condition
Installation of improper filter fittings could result in failure of the brake shuttle valves, and consequent loss of brake effectiveness, which could reduce controllability of the airplane during taxi, takeoff, and landing roll.
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Required Actions
Perform a one-time visual inspection to determine the serial numbers of the brake shuttle valves of the main landing gear (MLG). If any brake shuttle valve having S/N 2162A through 2244A inclusive is installed, replace the filter fittings with new filter fittings prior to further flight. No person shall install a brake shuttle valve having part number 5084-1 unless it has been inspected and any defective filter fitting replaced.
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Compliance Time
Within 3 months after the effective date of this AD
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Affected Aircraft
Bombardier Model DHC-7-1, -100, -101, -102, and -103 series airplanes, having serial numbers (S/N) 003 through 113 inclusive; and Model DHC-8-100, -200, and -300 series airplanes, having S/N's 003 through 498 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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