AD 70-14-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Airplanes |
Unsafe Condition
Cracks in flap tracks can lead to flap failure.
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Required Actions
Visually inspect all flap tracks for cracks within 10 landings after the effective date unless already done within the last 90 landings. If cracks are found, replace or repair the flap track before further flight. Repeat inspections at intervals not exceeding 100 landings. Install placards indicating flap operating speeds or provide equivalent procedures, and report any flap speed exceedances in the airplane log. Replace flap tracks with redesigned ones per Boeing Service Bulletin to exempt from inspection requirements.
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Compliance Time
within the next 10 landings after the effective date of this AD, unless already accomplished within the last 90 landings and thereafter at intervals not to exceed 100 landings from the last inspections
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Affected Aircraft
Boeing Model 747 airplanes certificated in all categories, including 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, and other 747-200 series models.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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