AD 68-17-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-200 | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-300 Series | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-300B Series | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-300C Series | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 707-400 Series | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 720 Series | BOEING Model 707/720 Series Aircraft |
| aircraft | The Boeing Company | 720B Series | BOEING Model 707/720 Series Aircraft |
Unsafe Condition
Cracking and failure of the lower wing skin at front spar station 392 emanating from fasteners of splice plate tab, front spar support fitting, and drag fitting attachments.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect lower wing skin using dye penetrant, eddy current, or approved equivalent methods for cracks at specified intervals. Repair cracks prior to further flight per specified Boeing Service Bulletins or approved modifications. Discontinue inspections after installing specified doublers or equivalent approved modifications.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required as indicated in the AD, with inspections due at intervals not exceeding 800 (720 Series) or 1200 (707 Series) hours time in service from the last inspection, adjusted per specific thresholds in paragraphs (h) through (k).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing 707/720 Series aircraft listed in Boeing Service Bulletin 1995 (Revision 5 or later FAA-approved revisions).
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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