AD 2012-20-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Elevator vibration and bearing swage failures prompted this AD, which addresses discrepancies in the aft attach lugs for the elevator tab control mechanism. These discrepancies could result in elevator and tab vibration, potentially leading to structural failure of the elevator or horizontal stabilizer, loss of structural integrity, and loss of airplane control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
For Group 1 airplanes, inspect the left and right elevator tab control mechanisms and repair or replace as applicable, in accordance with an approved method. For Group 2 airplanes, perform a detailed inspection for discrepancies of the inboard and outboard aft attach lugs of the left and right elevator tab control mechanisms, repeating the inspection at intervals not to exceed 1,500 flight cycles or 2,000 flight hours. Replace any discrepant parts before further flight if found during inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 1,500 flight cycles or 2,000 flight hours after the effective date of this AD, whichever occurs first.
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Affected Aircraft
The Boeing Company Model 737-200 and -200C series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 737-27A1302, dated April 24, 2012.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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