AD 61-23-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Brantly International, Inc. | B-2 | Airworthiness Directives; BRANTLY All Model B-2 Helicopters |
| aircraft | Brantly International, Inc. | B-2A | Airworthiness Directives; BRANTLY All Model B-2 Helicopters |
| aircraft | Brantly International, Inc. | B-2B | Airworthiness Directives; BRANTLY All Model B-2 Helicopters |
Unsafe Condition
Bond separation between the skin and foam filler on the inboard end of the B2-248-53 and B2-248-53A main rotor blades and cracks around the root fitting in both upper and lower skins.
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Required Actions
Inspect upper and lower skins of inboard end of B2-248-53/-53A blades for bond separation via feel/sound tests and cracks between rivets with a 5-power magnifying glass. Replace blades with B2-248-53M or B2-248-101 models if bond separation exceeds 12 inches or cracks exist around two or more rivets. Pre-flight inspections must be conducted before each flight after the initial inspection.
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Compliance Time
Within the next 10 hours' time in service unless already accomplished within the last 15 hours' time in service and at the expiration of each 25 hours' time in service thereafter
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Affected Aircraft
Brantly International, Inc. Model B-2, B-2A, B-2B helicopters equipped with B2-248-53 or B2-248-53A outboard main rotor blades.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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