AD 48-49-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Noorduyn Aviation Ltd. | Army UC-64 | Airworthiness Directives; Noorduyn Models Army UC-64, -64A, -64AS, and -64B Aircraft |
| aircraft | Noorduyn Aviation Ltd. | Army UC-64A | Airworthiness Directives; Noorduyn Models Army UC-64, -64A, -64AS, and -64B Aircraft |
| aircraft | Noorduyn Aviation Ltd. | Army UC-64AS | Airworthiness Directives; Noorduyn Models Army UC-64, -64A, -64AS, and -64B Aircraft |
| aircraft | Noorduyn Aviation Ltd. | Army UC-64B | Airworthiness Directives; Noorduyn Models Army UC-64, -64A, -64AS, and -64B Aircraft |
Unsafe Condition
Failure of the float wire brace plates, part number 16-31131, could result in structural failure of the float wire brace assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Reinforce the float brace wire plates, part number 16-31131, in accordance with Noorduyn Service Bulletin No. E5/44 or Army Air Forces Technical Order No. 01-155CB-13. Equivalent reinforcements may also be used.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
As soon as possible but not later than February 1, 1949.
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Affected Aircraft
Noorduyn Models Army UC-64, -64A, -64AS, and -64B aircraft equipped or about to be equipped with Edo Model 55-7170A floats.
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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