AD 2020-06-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model AS332L2 and EC225LP | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
The installation of the MGB upper deck fittings of the three MGB suspension bars could lead to tightening torque loss on the fittings' attachment pins (bolts).
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Required Actions
Determining the accumulated hours time-in-service (TIS) of certain part-numbered main gearbox (MGB) suspension bar attachment bolts and fittings, applying a life limit add-on factor, and inspecting the torque of certain MGB suspension bar attachment nuts. For each bolt that meets or exceeds its life limit, removing each bolt from service before further flight. For each bolt that has not exceeded its life limit, continuing to calculate and record the life limit of each bolt on its component history card or equivalent record and removing the bolt from service before reaching its life limit. For Model AS332L2 helicopters, re-calculating the life limit accumulated by the front, rear left hand, and rear right hand fittings by applying an add-on factor listed in the applicable service information. For each fitting that meets or exceeds its life limit, removing the fitting from service before further flight. For each fitting that has not exceeded its life limit, continuing to calculate and record the life limit of each fitting on its component history card or equivalent record and removing the fitting from service before reaching its life limit. For Model AS332L2 helicopters, inspecting the torque of each MGB suspension bar fitting front and rear nut. If the torque on any nut is higher than the maximum allowable limit, removing the nut and its bolt from service before further flight. If the torque on any nut is lower than the minimum allowable limit, tightening the nut before further flight and removing the nut and its bolt from service within 150 hours TIS.
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Compliance Time
Within 30 hours time-in-service (TIS) for re-calculating the life limit accumulated by each front and rear bolt, and within 150 hours TIS for inspecting the torque of each MGB suspension bar fitting front and rear nut.
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Affected Aircraft
Airbus Helicopters Model AS332L2 and EC225LP helicopters, with an MGB suspension bar front attachment bolt (bolt) part number (P/N) 332A22-1613-21 or 332A22-1613-20, MGB suspension bar rear bolt P/N 332A22-1614-20, MGB suspension bar front attachment fitting (fitting) P/N 332A22-1623-01, MGB suspension bar rear left hand fitting P/N 332A22-1624-02 or 332A22-1624-04, or MGB suspension bar rear right hand fitting P/N 332A22-1624-03 or 332A22-1624-05 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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