AD 98-11-04 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-100 Series | Airworthiness Directives; Boeing Model 737-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 737-200 Series | Airworthiness Directives; Boeing Model 737-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 737-200C Series | Airworthiness Directives; Boeing Model 737-100 and -200 Series Airplanes |
Unsafe Condition
Cracked structure in Structural Significant Items (SSI) could reduce structural integrity of Boeing Model 737-100 and -200 series airplanes.
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Required Actions
Revise FAA-approved maintenance/inspection programs to include inspections providing no less than required damage tolerance rating (DTR) for each SSI listed in SSID Revision D. Assess damage tolerance characteristics of SSIs affected by STCs and revise programs if existing inspections are ineffective. Perform initial inspections prior to specified flight cycle thresholds and repetitive inspections per SSID intervals.
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Compliance Time
Within 12 months after effective date or prior to reaching specified flight cycle thresholds (46,000 or 66,000 total flight cycles, depending on model), whichever occurs later.
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Affected Aircraft
Boeing Model 737-100, -200, and -200C series airplanes, including those modified by STC.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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