AD 2000-25-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Raytheon | Various | Airworthiness Directives; Raytheon (Beech) Model MU-300, MU-300-10, 400, 400A, and 400T Series Airplanes |
Unsafe Condition
Hydraulic fluid leakage from the B-nut area, which attaches a hydraulic tube to the anti-skid valve assembly, could lead to sudden loss of normal braking to the left wheel, causing an asymmetric braking condition and longer stopping distance, potentially resulting in the airplane overrunning the runway surface.
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Required Actions
Perform a one-time general visual inspection to detect hydraulic fluid leakage from the B-nut area. If no leakage is found, install an additional support (new nutplate, clamp, and screw) for the hydraulic tube. If leakage is found, replace the hydraulic tube with a new or serviceable one and install the additional support.
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Compliance Time
Within 200 flight hours after the effective date of this AD.
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Affected Aircraft
Raytheon (Beech) Model MU-300, MU-300-10, 400, 400A, and 400T series airplanes, as listed in Raytheon Aircraft Service Bulletin SB 32-3300, dated December 1999, 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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