AD 2006-21-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737 | Airworthiness Directives; Boeing Model 737 Airplanes |
Unsafe Condition
Freeplay-induced vibration of the aileron balance tab, which could lead to excessive vibration of the airframe during flight and potentially result in loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitive measurement of the freeplay of both aileron balance tabs; repetitive lubrication of the aileron balance tab hinge bearings and rod end bearings; and related investigative and corrective actions if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 18 months after the effective date of the AD for airplanes completed before the AD's issuance, or within 24 months after the date of issuance of the original standard airworthiness certificate or original export certificate of airworthiness for airplanes completed after the AD's issuance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Boeing Model 737 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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