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Airworthiness Directives (ADs)

88-737-186

The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.

Issue Date
1999/06/09
Applicability
737
Model Number
737
CAA AD Number
88-737-186
Aeronautics Authority of Original AD
FAA
Original AD Number
99-11-05
Effective Date
Subject
To prevent failure of the secondary servo valve slide in the rudder power control unit (PCU) due to cracking of the slide, and consequent rudder hardover and reduced controllability of the airplane.
Reference Publications (Revision/ATA/SB)
ASB 737-27A1221R1,737-27A1222R1
Remarks
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