AD 48-43-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Martin-Marietta Corporation | 202 | Martin Model 202 Aircraft |
Unsafe Condition
Excessive hydraulic fluid leakage from system emergency and flap synchronizer bypass valves, nose gear steer-valve, hydraulic test outlet dustcaps, main and landing gear pressure relief valves, 24ST aluminum alloy tubing in hydraulic lines, and accumulator/pressure ports of the system unloading valve.
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Required Actions
Replace specified valves and dustcaps with new parts, install safety wiring on pressure relief valves, replace 24ST tubing with 61ST tubing, and install proper size AN 6246 leather backup rings at specified ports.
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Compliance Time
As soon as practicable, but not later than January 1, 1949
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Affected Aircraft
Martin-Marietta Corporation Model 202 Aircraft, all serial numbers
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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