AD 74-26-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bendix Electrical Components Division | Magnetos | Airworthiness Directives; BENDIX ELECTRICAL COMPONENTS DIVISION: Applies To Certain Bendix (Scintilla) S-20, S-200 and S-1200 Series Magnetos Listed on Bendix Service Bulletin No. 556B |
Unsafe Condition
The magnetos may have a non-solid steel drive shaft bushing, which could result in failure of the drive shaft bushing and subsequent loss of ignition.
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Required Actions
Inspect and incorporate a solid steel drive shaft bushing by complying with Bendix Service Bulletin No. 556B or equivalent procedure approved by the FAA. Ensure all provisions of the service bulletin are followed except the compliance paragraph.
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Compliance Time
Within 200 hours in service or 90 days after the effective date of this AD, whichever occurs first
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Affected Aircraft
Bendix Electrical Components Division S-20, S-200, and S-1200 Series Magnetos listed on Bendix Service Bulletin No. 556B, excluding those with change designations in Table No. 1 or later (red nameplate), serial number 349001 or higher (blue nameplate), or black nameplate with part numbers in the Equipment Affected section.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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