AD 2006-07-23

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 757 Airplanes

AD Number
2006-07-23
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2005-22471
FR Citation
71 FR 18194

Applicability

TypeManufacturerModelDetails
aircraft Boeing 757 Airworthiness Directives; Boeing Model 757 Airplanes

Unsafe Condition

Excessive freeplay in the power control units (PCUs) that move the rudder can induce vibration of the rudder, which may lead to divergent flutter and loss of control.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Measure the freeplay of each of the three PCUs that move the rudder at specified intervals. Lubricate rudder components at specified intervals. Take corrective actions if necessary.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 9 months of the effective date for initial lubrication, and within 18 months of the effective date for initial freeplay measurement.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

All Boeing Model 757 airplanes.

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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View Official Source ↗ Find More ADs for Boeing 757

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