AD 54-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Martin-Marietta Corporation | 202 | MARTIN Models 202 and 202A Aircraft |
| aircraft | Martin-Marietta Corporation | 202A | MARTIN Models 202 and 202A Aircraft |
Unsafe Condition
Cracks in the main landing gear trunnion fittings (P/N 2021A23307, 2021A23308, 2021A23309, 2021A23310) have been reported in the area of the boss and the web, which could lead to failure of these parts.
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Required Actions
Inspect fittings using dye penetrant method, clean thoroughly. If cracks found, rework by grinding if within 2 inches length or 0.060 inch depth; replace otherwise. Reinspections required at intervals of 250 hours ±75 hours with 8-power magnifying glass or equivalent. New parts must be inspected at first 1,000 hours and subsequent 250-hour intervals. Improved design parts (P/N -1 suffix) require visual inspections every 500 hours initially, then dye penetrant at 7,500 hours and subsequent 250-hour intervals.
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Compliance Time
As soon as practical but not later than December 10, 1954, unless already accomplished. If a crack is found, compliance required prior to return to service.
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Affected Aircraft
Martin-Marietta Corporation Models 202 and 202A Aircraft, all serial numbers.
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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