AD 85-12-01 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-200 | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-300 Series | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-300B Series | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-300C Series | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 707-400 Series | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 720 Series | BOEING Model 707/720 Series Airplanes |
| aircraft | The Boeing Company | 720B Series | BOEING Model 707/720 Series Airplanes |
Unsafe Condition
Cracks in Significant Structural Details (SSD) listed in Boeing Document D6-44860, Revision M, could lead to structural failure.
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Required Actions
Incorporate a revision into the FAA-approved maintenance inspection program requiring inspection and repairs of listed SSDs. Inspect each SSD exceeding thresholds within 180 days after the effective date or before reaching thresholds. Repair or replace cracked parts prior to further flight.
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Compliance Time
Within 180 days after the effective date of the amendment or prior to reaching the threshold, whichever is later, and prior to further flight if cracks are found.
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Affected Aircraft
Boeing Model 707/720 series airplanes certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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