AD 76-15-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Series Airplanes |
Unsafe Condition
Mismatch of elevator balance panel aft hinges in bays 2 and 5 could cause possible stabilizer flutter.
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Required Actions
Inspect elevator balance panel aft hinges in bays 2 and 5 for compatibility within 300 flight hours from the effective date. Replace hinges and physically rebalance if aluminum and aluminum-bronze hinges are mismatched. Airplanes needing immediate action may be flown to the nearest maintenance base under specified regulations.
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Compliance Time
within the next 300 flight hours from the effective date of this AD
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Affected Aircraft
All Model 727 series airplanes categorized as Group I and II in Boeing Service Bulletin No. 727-55-A65, or later FAA approved revisions, 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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