AD 92-02-12
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
Halon escape through the bulk cargo ventilation flapper valve when the fire extinguishing system is activated.
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Required Actions
Remove the bulk cargo ventilation flapper valve in accordance with Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991. An alternative method of compliance or adjustment of the compliance time may be used when approved by the FAA Manager, Seattle Aircraft Certification Office.
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Compliance Time
Within 4,000 flight hours after the effective date of this AD
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Affected Aircraft
Model 767 series airplanes listed in Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991, 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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