AD 67-22-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron Canada Limited | 206A | Airworthiness Directives; Bell Model 206A Helicopters |
Unsafe Condition
Improperly wired electric fuel boost pumps may create a potentially explosive condition in the fuel tank due to lack of proper grounding.
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Required Actions
Before further flight, inspect the white wire connections of both fuel boost pumps to ensure they are connected to the aircraft system ground wire using specified methods. If grounding is not confirmed, correct connections using the Master Electrical Diagram. Within 25 hours' time in service, modify the fuel boost pump wiring per Bell Helicopter Company Service Letter Model 206A-No. 21, Revision A, or an approved equivalent method.
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Compliance Time
Before further flight and within the next 25 hours' time in service
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Affected Aircraft
Bell Helicopter Textron Canada Limited Model 206A Helicopters, Serial Numbers 4 through 20, 22 through 48, 50 through 56, 59, 61, and 63.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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