Commonwealth legislation

AD/S-PUMA/50 - Engine Electronic Control Unit

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Eurocopter AS332 Super Puma helicopters fitted with Turbomeca Makila 1A/1A1 engines and specified electronic control units to add a POWER‑indicator check to the Aircraft Flight Manual and to perform that check at pre‑flight and at certain maintenance events. If the POWER indicator fails, or when certain components are replaced or adjusted, the anticipator potentiometer must be checked and adjusted following the manufacturer’s Alert Telex. Costs for inspections, adjustments and any replacements are borne by the aircraft owner/operator; CASA (the delegate) sets and enforces the compliance times.

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AIRWORTHINESS DIRECTIVE

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For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (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.

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Eurocopter AS 332 (Super Puma) Series Helicopters

AD/S-PUMA/50 Engine Electronic Control U

AD/S-PUMA/50 Engine Electronic Control Unit 1/2004

Applicability: AS 332 helicopters, versions C, C1, L and L1, equipped with Turbomeca Makila 1A or 1A1 engines with electronic control units (ECU) post TU 219 or TU 190 or

TU 202.

Requirement: 1. Ensure that the “POWER” indicator light check procedures, specified in paragraph 2.B.1 of Eurocopter Alert Telex 05.00.59 R2, are in the Aircraft Flight Manual (AFM).

2. Perform the “POWER” indicator light check procedures specified in paragraph

2.B.1 of Alert Telex 05.00.59 R2.

3. If the “POWER” indicator light fails either the pre flight or a Requirement 2 check procedure, check and adjust the anticipator potentiometer in accordance with the instructions in paragraph 2.B.2 of the Alert Telex.

4. If the anticipator potentiometer has not been checked and adjusted in accordance with Requirement 3, check and adjust the anticipator potentiometer in accordance with the instructions in paragraph 2.B.2 of the Alert Telex.

Note: DGAC AD F-2003-414 refers.

Compliance: For Requirement 1 - Before the next flight after the effective date of this Directive.

For Requirement 2 -

On replacement of an ECU pre-MOD TU 190 or TU 202 or TU 219 with an ECU post-MOD TU 190 or TU 202 or TU 219,

b. Each time the anticipator potentiometer is replaced,

c. Each time the AP hydraulic unit is replaced, and

d. Each time the linkage between the AP hydraulic unit and the anticipator potentiometer is adjusted.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE