AD 76-14-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Curtiss-Wright Corporation | C632S | CURTISS-WRIGHT Model C632S Propeller |
Unsafe Condition
Blade failure due to an undetected crack in the blade surface or internal blade shank area.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove propeller from aircraft and blades from hub; remove de-icing elements; inspect blade surface and internal shank area for cracks using magnetic particle inspection and borescope/mirror-light combination; reject blades with 'Indications' as defined in service publications; replace non-compliant blades and reassemble acceptable ones.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 300 hours in service after the effective date of this AD, unless previously accomplished within 1700 hours in service prior to the effective date, and every 2000 hours in service thereafter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
CURTISS-WRIGHT Model C632S Propeller equipped with 744-6C2-() series hollow steel blades installed on but not limited to Douglas DC-6 aircraft.
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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