AD 71-25-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-200 | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-300 Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-300B Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-300C Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 707-400 Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 720 Series | BOEING Model 707/720 Airplanes |
| aircraft | The Boeing Company | 720B Series | BOEING Model 707/720 Airplanes |
Unsafe Condition
Water accumulation forward of the station 360 bulkhead could block or be absent drains, leading to potential structural damage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the airplane per Boeing Service Bulletin 3027 or later FAA-approved revisions. If drains are blocked or absent, modify the station 360 bulkhead, bulkhead blanket, and floor mat as described. Alternatively, perform an equivalent inspection and modification approved by the FAA.
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Compliance Time
within the next 300 hours time in service after effective date of this AD
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Affected Aircraft
Boeing Model 707/720 airplanes certified 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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