AD 90-10-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
Unsafe Condition
Defective or failed rod-end bearings in the Number 3 left and right entry door girt bar mechanism could impair proper operation of the emergency evacuation slide.
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Required Actions
Within 90 days after June 4, 1990, inspect the Number 3 left and right entry door girt bar mechanism for defective rod-end bearings. Replace any defective or failed bearings with serviceable parts per Boeing Alert Service Bulletin 747-52A2217. Report all failures/defects within 7 days after inspection completion to the FAA Seattle Manufacturing Inspection District Office.
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Compliance Time
Within 90 days after the effective date of this AD
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Affected Aircraft
Boeing Model 747 series airplanes identified in Boeing Alert Service Bulletin 747-52A2217 dated October 19, 1989.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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