AD 2004-13-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Short | Brothers Model SD3-60 Series | Airworthiness Directives; Short Brothers Model SD3-60 Series Airplanes |
Unsafe Condition
Cracking in the welded joints of the balance weight brackets for the left and right elevator trim tabs could lead to the loss of the balance weight, resulting in incorrect trim during takeoff and landing, and reduced controllability of the airplane.
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Required Actions
Inspect the welded joints of the balance weight brackets for cracking within 2 months after the effective date. If no cracking is found, repeat inspections at intervals not exceeding 4,800 flight hours until the bracket is replaced. Replace any bracket that has not been replaced within 6 months after the effective date or upon reaching 28,800 total flight hours. If cracking is found, repair or replace the bracket as specified, depending on the length of the crack and flight hours accumulated. Refit balance weights, covers, and trim tabs after any inspection, repair, or replacement.
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Compliance Time
Within 2 months after the effective date
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Affected Aircraft
All Short Brothers Model SD3-60 series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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