AD 89-07-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
Unsafe Condition
Binding of the aileron control wheel caused by internal damage in the aileron power control unit (PCU).
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Required Actions
Replace aileron power control units prior to 18,000 hours time in service since new or overhauled with new seals, or perform hydraulic bench internal leakage tests at intervals not exceeding 2,500 flight cycles. Alternate compliance may be approved by the FAA Manager.
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Compliance Time
Prior to the accumulation of 18,000 hours time in service on the PCU since new or overhauled with new seals, or within the next 3,000 hours time in service on the PCU after the effective date of this AD, whichever occurs later.
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Affected Aircraft
All Model 727 series airplanes, 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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