AD 90-22-07
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
Engine fires and potential in-flight engine shutdowns due to oil loss.
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Required Actions
Modify the drain system on each engine in accordance with Boeing Alert Service Bulletin 767-71A0057, dated February 22, 1990. Alternate means of compliance or adjustment of compliance time may be used if approved by the Manager, Seattle Aircraft Certification Office.
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Compliance Time
within 9 months after the effective date of this AD
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Affected Aircraft
Boeing Model 767 series airplanes equipped with Pratt and Whitney JT9D-7R4 engines, as listed in Boeing Alert Service Bulletin 767-71A0057, dated February 22, 1990.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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