AD Amdt-39-11281
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Raytheon | Aircraft Company Beech Models C90A | Airworthiness Directives; Raytheon Aircraft Company Beech Models C90A, B200, B300, and 1900D Airplanes |
Unsafe Condition
Improper machining of the pump housing on certain landing gear emergency hand pumps resulted in insufficient groove depth to retain a snap ring, which could lead to the check valve not being retained in its proper position. This could result in the inability to properly lower and lock the landing gear in the event of failure of the primary retraction/extension system.
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Required Actions
Replace the landing gear hand pump for airplanes within the specified serial number range that had the pump installed at manufacture. Prohibit the future installation of any of these pumps on all affected airplanes.
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Compliance Time
Before further flight
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Affected Aircraft
Raytheon Aircraft Company Beech Models C90A, B200, B300, and 1900D airplanes with landing gear hand pumps within a certain serial number range installed at manufacture.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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