AD 69-12-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-100 Series | BOEING Model 737-100, 737-200, and 737- 200C Series Airplanes |
| aircraft | The Boeing Company | 737-200 Series | BOEING Model 737-100, 737-200, and 737- 200C Series Airplanes |
| aircraft | The Boeing Company | 737-200C Series | BOEING Model 737-100, 737-200, and 737- 200C Series Airplanes |
Unsafe Condition
Cracking in the lugs of the aileron tab mast fittings and flanges of the aileron tab hinge fittings.
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Required Actions
Within 25 hours' time in service after the effective date, visually inspect aileron tab mast fittings for cracks and excessive gaps. If cracks found, replace mast fitting before further flight. If no cracks, measure gaps, shim, and torque nuts. If gaps exceed limits, either shim/torque or repeat inspections every 25 hours. After adjustments, inspect for cracks every 160 hours until two inspections or 280 additional hours, then every 600 hours. For hinge flanges, inspect within 160 hours' time in service; replace if cracked before flight, else inspect every 600 hours. Terminate inspections when aluminum parts replace magnesium components as per service bulletins.
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Compliance Time
Within 25 hours' time in service after the effective date of this AD for mast fittings and within 160 hours' time in service for hinge fittings.
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Affected Aircraft
Boeing Model 737-100, 737-200, and 737-200C Series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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