AD 89-23-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300 and -400 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; BOEING Model 737-300 and -400 Series Airplanes |
Unsafe Condition
Engine ice ingestion jeopardizing continued safe flight and landing.
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Required Actions
Incorporate Boeing Operations Manual Bulletin 737-300-89-1 or 737-400-89-1 into the Airplane Operations Manual. An alternate means of compliance or adjustment may be used if approved by the FAA Manager, Seattle Aircraft Certification Office.
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Compliance Time
within 10 days after the effective date of this AD
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Affected Aircraft
BOEING Model 737-300 and -400 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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