AD 46-40-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fairchild Industries, Inc. | 24 C8 | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8A | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8B | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8D | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8DS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8E | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8ES | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8F (Army UC-61J) | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8FS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24G (Army UC-61H) | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
Unsafe Condition
Engine failure due to air-lock in the fuel system when fuel is fed from more than one tank at a time.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Placard the fuel tank selector valve with a caution label stating 'CAUTION. Operate on One Tank at a Time Only.'
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
immediately
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fairchild Model 24 Series Aircraft, including models 24 C8, 24 C8A, 24 C8B, 24 C8D, 24 C8DS, 24 C8E, 24 C8ES, 24 C8F (Army UC-61J), 24 C8FS, 24G, and others as listed.
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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