Airworthiness Directives (ADs)
CAA-2006-10-012
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.
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Issue Date
- 2006/10/25
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Applicability
- Model 747-400, 777-200, and 777-300 series airplanes, certificated in any category; as identified in Boeing Service Bulletin 747-21A2414, Revision 3, dated May 12, 2006; and Boeing Service Bulletin 777-21A0048, Revision 3, dated May 12, 2006.
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Model Number
- Boeing Model 747-400, 777-200, and 777- 300 Series
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CAA AD Number
- CAA-2006-10-012
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2006-21-05
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Effective Date
- 2006/11/22
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Subject
- This AD are intended to prevent an increased pressure drop across the humidifier and consequent reduced airflow to the flight deck, which could result in the inability to clear any smoke that might appear in the flight deck. This action is intended to address the identified unsafe condition.
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Reference Publications (Revision/ATA/SB)
- Boeing Service Bulletin 747-21A2414R3, 747-21-2405R4, 777-21A0048R3, 777-21-0035R1 and 777-21-0035.
Hamilton Sundstrand Service Bulletin 816086-21-01 and Hamilton Sundstrand Service Bulletin 821486-21-01.
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Remarks
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