AD 61-16-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Brantly International, Inc. | B-2 | Airworthiness Directives; BRANTLY Model B-2 Helicopters |
| aircraft | Brantly International, Inc. | B-2A | Airworthiness Directives; BRANTLY Model B-2 Helicopters |
| aircraft | Brantly International, Inc. | B-2B | Airworthiness Directives; BRANTLY Model B-2 Helicopters |
Unsafe Condition
Failures of the right forward mount lug of the upper transmission case have occurred due to fatigue associated with undesirable pre-stress introduced during assembly procedures.
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Required Actions
Inspect and rework upper and lower surfaces of left and right forward transmission mount pads per specified procedures, including drilling, filing, and installing new brackets and bolts. Ensure proper fit of transmission bracket P/N B2-151-19 to avoid pre-stress.
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Compliance Time
within the next 25 hours' time in service after the effective date of this directive
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Affected Aircraft
Brantly International, Inc. Model B-2 helicopters prior to Serial Number 56 (excluding 16, 31, 44, 51, 52, 53) and prior to Serial Number 103 (excluding those with 0.375-inch thick mount lugs on P/N B2-104-2 upper transmission case)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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