AD 50-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Briggs & Stratton Corporation | Ignition Switches | Airworthiness Directives; BRIGGS AND STRATTON: Applies to All Aircraft Equipped With Army Air Force Type A-8 Ignition Switches Manufactured by Briggs and Stratton |
Unsafe Condition
Worn internal switch lever stops on Army Air Force Type A-8 Ignition Switches may allow overtravel past the 'OFF' position, breaking the magneto ground and permitting engine firing when the switch is in the 'OFF' position.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect switch lever for overtravel past the 'OFF' position by checking if the pointer projects beyond the centerline of the 'O' in 'OFF'. Replace the switch if stops are worn. Repeat inspection every 100 hours of operation.
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Compliance Time
Initial compliance required not later than March 1, 1950, and every 100 hours operation thereafter.
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Affected Aircraft
All aircraft equipped with Army Air Force Type A-8 Ignition Switches manufactured by Briggs and Stratton, identifiable by the name stamped on the rear and a formed sheet metal lever.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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