AD 2015-17-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A300 B4-600 | Airworthiness Directives; Airbus Airplanes |
Unsafe Condition
Fatigue testing applied to a test airframe confirmed the initiation of cracks on the sealing angles of the centre spar, adjacent to rib 8, which could lead to the rupture of the sealing angles and the subsequent crack initiation in the bottom skin of the wing.
Required Actions
Modification of the affected aeroplanes as specified in Airbus Service Bulletin (SB) A300-57-6033 (Airbus Mod 8609), as well as post-modification repetitive inspections. Repetitive high frequency eddy current (HFEC) inspections of the center spar sealing angles adjacent to the pylon rear attachment fitting for cracks, modifying the airplane by cold expansion of the center spar sealing angles outboard of rib 8 if necessary, replacing both of the forward and aft sealing angles with new sealing angles and cold expanding the attachment holes if necessary, and doing post-repair repetitive inspections and corrective actions if necessary.
Compliance Time
Before further flight
Affected Aircraft
Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model C4-605R variant F airplanes (collectively called A300-600 series airplanes).
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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