Airworthiness Directives (ADs)
CAA-2008-09-005
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
- 2008/09/25
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Applicability
- Harco Labs, Inc. Pitot/AOA Probes (Part Numbers 100435-39, 100435-39-001, 100435-40, and 100435-40-001)
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Model Number
- Harco Labs, Inc. Pitot/AOA Probes (Part Numbers 100435-39, 100435-39-001, 100435-40, and 100435-40-001)
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CAA AD Number
- CAA-2008-09-005
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2008--19-01
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Effective Date
- 2008/09/29
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Subject
- We are issuing this AD to detect and correct improperly performing pitot/AOA probe heaters, which could result in blockage within the pitot/AOA system from condensation freezing with consequent incorrect indication of impact air pressure (airspeed/AOA). This blockage could lead to the stall warning becoming unreliable and the stick pusher, overspeed warning, autopilot, and yaw damper to malfunction.
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Reference Publications (Revision/ATA/SB)
- Harco Labs, Inc. Service Bulletin SB-34-10-10- 001, Revision F, Harco Pitot AOA Probe Internal Tubing Heater Verification Test Procedure No. P1149 Rev: E, Eclipse Aviation Alert Service Bulletin SB 500-34-019, Rev C.
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Remarks
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