AD/INST/57 - Harco Labs, Inc. Pitot/Angle of Attack Probes (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Instruments and Automatic Pilots AD/INST/57 Harco Labs, Inc. Pitot/Angle of Attack Probes 13/2008

Applicability: Harco Labs, Inc. pitot/angle of attack (AOA) probe part numbers (P/N) 100435-39, 100435-39-001, 100435-40 and 100435-40-001, serial numbers 740000 through 799999. Note 1: Pitot/AOA probes are known to be installed on, but not limited, to Eclipse Aviation Company Model EA500 aeroplanes, as follows: a. Aeroplanes with a serial number in the range of 000001 through 000189, where the affected probe was installed at manufacture, or b. Any serial number aeroplane where an affected probe was installed in the field. Requirement: 1. Carry out a logbook check of the maintenance records to determine if any pitot/AOA probe (P/N 100435-39, 100435-39-001, 100435-40 or 100435-40-001) with any affected serial number is installed. If, as a result of this check, it is positively identified that all P/N 100435-39, 100435-39-001, 100435-40 or 100435-40-001 pitot/AOA probes installed do not have a serial number affected by this Directive, then no further action is required. The owner/operator holding at least a private pilot licence may carry out the logbook check and make an entry into the aircraft logbook showing compliance with this Requirement. 2. If, as a result of the Requirement 1 check, any pitot/AOA probe with an affected serial number is found to be installed or the serial number of any installed pitot/AOA probe cannot be positively identified, incorporate the following text into the Limitations Section of the aircraft flight manual (AFM): a. "Operate Only under Day Visual Flight Rules (VFR)"; and b. "File Only a VFR Flight Plan." Inserting a copy of this Directive into the AFM satisfies this Requirement. The owner/operator holding at least a private pilot licence may insert the above information into the AFM and make an entry into the aircraft logbook showing compliance with this Requirement.