AD Amdt-39-9954

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 737 Series Airplanes

AD Number
Amdt-39-9954
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-NM-26-AD
FR Citation
62 FR 9679

Applicability

TypeManufacturerModelDetails
aircraft Boeing 737 Airworthiness Directives; Boeing Model 737 Series Airplanes

Unsafe Condition

Cracking of the bearing of the main rudder power control unit (PCU) due to installation of an incorrect bolt; such cracking could result in seizure of the bearing and resultant uncommanded rudder movement.

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

Required Actions

Remove the main rudder power control unit (PCU) and replace with a serviceable unit.

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

Compliance Time

Before further flight

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

Affected Aircraft

Boeing Model 737 series 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

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for Boeing 737

Related Airworthiness Directives

2011-24-12 Recurring

final rule

Airworthiness Directives; The Boeing Company Model 737-200, -200C, -300, -400, and -500 Series Airplanes

Unsafe Condition: could result in sudden fracture and failure of the fuselage skin panels, and consequent rapid decompression of the airplane.

Effective: Jan 5, 2012 Category: aircraft

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