AD 55-16-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Martin-Marietta Corporation | 202 | MARTIN Models 202, 202A, and 404 Aircraft |
| aircraft | Martin-Marietta Corporation | 202A | MARTIN Models 202, 202A, and 404 Aircraft |
| aircraft | Martin-Marietta Corporation | 404 | MARTIN Models 202, 202A, and 404 Aircraft |
Unsafe Condition
Flexible hose components of propeller feathering lines forward of the firewall may fail due to damage from a powerplant fire, compromising fire-resistance integrity.
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Required Actions
Replace all flexible hose components of propeller feathering lines forward of the firewall with fire-resistant lines and fittings meeting current requirements, using acceptable hose assemblies such as Aeroquip 680-12S with protective sleeves, Resistoflex SSFR-3800-10, or Aeroquip 309009-12S.
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Compliance Time
By first scheduled engine change after November 1, 1955, but not later than November 1, 1956.
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Affected Aircraft
Martin-Marietta Corporation Models 202, 202A, and 404 aircraft equipped with Hamilton Standard propellers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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