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AD/APU/22 Amdt 1 APS 3200 APU Software Upgrade
Auxiliary Power UnitsAuxiliary Power Units
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Auxiliary Power Units
| AD/APU/22 Amdt 1 | APS 3200 APU Software Upgrade | 6/2021 |
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| Applicability: | Hamilton Sundstrand (formerly Auxiliary Power International Corporation - APIC) APS 3200 auxiliary power units (APU).Note 1: These APUs are known to be installed on, but not limited to, Airbus A319, A320 and A321 series aeroplanes. |
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| Requirement: | Determine the applicability of United States of America Federal Aviation Administration (FAA) AD 97-03-06, as in force from time to time.2. If it is determined that FAA AD 97-03-06 is applicable and has not been previously accomplished, perform the actions required by that AD.Note 2: Previous compliance with the original issue of AD/APU/22, AD/A320/199 or French Directorate General for Civil Aviation (DGAC) AD 96‑293(B) R1, constitutes compliance with this amendment. If this is the case, no further action is necessary for this Directive.Note 3: The words “as in force from time to time” require compliance with the most recent version of the referenced document. |
| Compliance: | For Requirements 1 and 2 - within 30 days after the commencement of this Directive. |
| This Airworthiness Directive commences on 31 March 2021. | |
| Background: | The original issue of AD/APU/22 required compliance with DGAC AD 96-293(B) R1 because the FAA, as the State of Design for the applicable component, had not issued a corresponding AD at that time. The FAA subsequently issued FAA AD 97‑03‑06, which addresses the same unsafe condition. The AD requires an upgrade of the APU electronic control box software, a one-time action for which the compliance date and/or period has passed.This AD may be applicable to registered Australian aircraft. AD/APU/22 was issued to ensure all applicable State of Design ADs are complied with. |
| Amendment 1 of this directive replaces reference to French DGAC AD 96‑293(B) with reference to the State of Design AD. |
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David Punshon
Delegate of the Civil Aviation Safety Authority
19 March 2021