AD 2008-26-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes |
Unsafe Condition
Insufficient electrical bonding between the refuel/defuel shutoff valves and the aircraft structure due to a non-conductive gasket (Gask-O-Seal) and an anodic coating on the shutoff valve electrical conduit connection fitting could result in arcing and potential ignition source inside the fuel tank during lightning strikes, leading to a fuel tank explosion.
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Required Actions
Inspect and modify the refuel/defuel shutoff valves to ensure proper electrical bonding with the aircraft structure. Replace or revise the non-conductive gasket and remove or revise the anodic coating on the shutoff valve electrical conduit connection fitting as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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