AD 2006-12-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-100 | Airworthiness Directives; Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes |
Unsafe Condition
Excessive in-flight vibrations of the elevator tab due to wear of the hinges and control system, which can lead to loss of the elevator tab and consequent loss of controllability of the airplane.
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Required Actions
Inspect the elevator tab assembly for damage or discrepancies, including detailed inspections of the tab mechanism and tab mast fitting. Replace, repair, or rework any damaged or discrepant parts, ensuring tolerances are checked for reworked configurations. Torque certain components as applicable. All corrective actions must be completed before further flight.
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Compliance Time
Varies based on inspection type and history: initial inspections before 4,500 total flight cycles or within 1,500 flight cycles/2,000 flight hours after last inspection; repetitive inspections between 1,500/2,000 and 4,500/6,000 flight cycles/hours.
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Affected Aircraft
Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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