AD 64-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Series Aircraft |
Unsafe Condition
Failure of the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18 could result in unintended autopilot activation or malfunction.
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Required Actions
Open the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18 before further flight. Secure these circuit breakers in the off position at the first scheduled stop with available facilities and personnel. Reactivate the autopilot only after modification per Boeing Service Bulletin 22-7 or FAA-approved equivalent.
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Compliance Time
Before further flight after the effective date of this AD
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Affected Aircraft
Boeing Model 727 Series Aircraft including 727-100, 727-100C, 727-200, 727-200F, 727 Series, and 727C Series
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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