AD 91-12-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | Airworthiness Directives: BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | Airworthiness Directives: BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | Airworthiness Directives: BOEING Model 767 Series Airplanes |
Unsafe Condition
Loss of fluid in the left hydraulic system due to a specific failure mode addressed by Boeing Alert Service Bulletin 767-29A0038, Revision 1.
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Required Actions
Modify the left hydraulic system in accordance with Boeing Alert Service Bulletin 767-29A0038, Revision 1. Alternative methods of compliance may be approved by the Manager, Seattle Aircraft Certification Office.
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Compliance Time
within the next 3,600 hours time-in-service or 24 calendar months after the effective date of this AD, whichever occurs later
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Affected Aircraft
Boeing Model 767 series airplanes, line numbers 001 through 255, on which PRR 11546-2 has not been incorporated
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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