AD 85-22-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Series Airplanes |
Unsafe Condition
Cracking or punctures in the aft pressure bulkhead could lead to airplane depressurization.
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Required Actions
Perform a one-time visual inspection of the aft side of the aft pressure bulkhead for repairs or damage within 30 days after the effective date. Report findings including sketches, photos, or drawings within 30 days. Repair any cracking or punctures prior to further flight using approved methods. Repair other discrepancies according to approved procedures on an approved schedule.
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Compliance Time
within 30 days after the effective date of this AD
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Affected Aircraft
Boeing Model 747 series airplanes through Line Number 622, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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