AD 2012-12-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A300 B4-600 | Airworthiness Directives; Airbus Airplanes |
Unsafe Condition
Degradation of the electrical insulation sleeves of the low-level indication lamps on the MTI can cause a short circuit, resulting in high voltage being conveyed to the high- and low-level sensors in the wing tanks. This could cause the level sensor to heat above acceptable limits, possibly resulting in a fuel tank explosion and consequent loss of the airplane.
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Required Actions
Replace the cockpit multi-tank indicators (MTI) with units featuring silicone sleeves and reinstate the low-level warning indication to the cockpit MTI. For certain airplanes, replace high-level, low-level, and overflow sensors and their harness connectors with fused level sensor units according to Airbus Service Bulletins A300-28-6095 or A300-28-9013.
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Compliance Time
Within 12 months of the effective date (July 23, 2012)
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Affected Aircraft
Airbus Model A300 B4-600, B4-600R, A300 F4-600R series airplanes, Model A300 C4-605R Variant F airplanes, and Model A310 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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