AD 64-19-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-200 | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300B Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300C Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-400 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 720 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 720B Series | BOEING Models 707 and 720 Series Aircraft |
Unsafe Condition
Loss of air conditioning bay access doors due to lobe wear on hinges and cracks around rivets attaching hinges to doorframes.
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Required Actions
Inspect hinges for lobe wear and doorframes for cracks. Replace hinges with lobe wall thickness less than 0.030 inches before further flight. For specified serial numbers, inspect doorframes and hinges for cracks and replace cracked parts before flight. Discontinue inspections after installing reinforcement plates per Boeing Service Bulletin 879 or approved equivalent.
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Compliance Time
Within 550 hours' time in service after September 7, 1964, unless accomplished within the last 2,500 hours' time in service, and at intervals not exceeding 3,050 hours' time in service from the last inspection.
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Affected Aircraft
Boeing Models 707 and 720 Series aircraft, including specified serial numbers 17586 through 17619, 17623 through 17626, 17628 through 17652, 17658 through 17673, 17675 through 17684, 17692 through 17706, 17718 through 17720, 17722 through 17724, 17903 through 17905, 17907 through 17909, 17925 through 17927 and 18013.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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