| AD Number | 55-16-02 | Status | Active |
| Effective Date | Not specified | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | N/A |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Martin-Marietta Corporation |
| Model(s) | 202 202A 404 |
55-16-02 MARTIN: Applies to Models 202, 202A, and 404 Aircraft Equipped With Hamilton Standard Propellers.
Compliance required by first scheduled engine change after November 1, 1955, but not later than November 1, 1956.
To increase the fire-resistance integrity of the propeller feathering system against damage by a powerplant fire, all flexible hose components of propeller feathering lines forward of the firewall must be replaced with lines and fittings which will meet current fire-resistant requirements. The following hose assemblies are considered acceptable for this application:
(a) Aeroquip 680-12S hose assemblies with Aeroquip 304 protective sleeves over end fittings (Aeroquip assembly P/N 304000-12S).
(b) Resistoflex SSFR-3800-10 hose assemblies utilizing -12 connections.
(c) Aeroquip 309009-12S hose assemblies.