Commonwealth legislation

AD/HU 369/103 - Turbine Outlet Temperature Wire Harness

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This Airworthiness Directive (AD) requires operators of specified MD Helicopters 369D, 369E, 500N and 600N with particular turbine outlet temperature (TOT) indicators to test the TOT indicating system calibration and, where readings fall outside specified ranges, carry out corrective actions set out in MD Helicopters service bulletins. For 600N helicopters the AD also requires checking the ECU/FADEC TOT sensing against a ±5 °C tolerance. CASA issued the directive; owners/operators must arrange and pay for the tests, calibration and any repairs using the prescribed procedures.

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Current sections

Direct links to the current provisions in AD/HU 369/103 - Turbine Outlet Temperature Wire Harness.

AIRWORTHINESS DIRECTIVE

View image in the official source

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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 CAR 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.

AD/HU 369/103 Turbine Outlet Temperature

AD/HU 369/103 Turbine Outlet Temperature Wire Harness 7/2000

Applicability: Model 369D, 369E and 500N series helicopters with analogue/digital turbine outlet temperature (TOT) indicator, part number (P/N) 369D24513-1, installed; and Model 600N helicopters, with analogue/digital TOT indicator, P/N 9A3420 installed.

Requirement: 1. For Model 369E, 369D, and 500N helicopters -

Test the TOT indicating system to verify correct calibration in accordance with the Accomplishment Instructions, Part I, of MD Helicopters, Inc. (MDHI) Service Bulletin SB369D-199, SB369E-093, SB500N-019, dated 11 January 2000, as applicable.

b. If, during any test required by Requirement 1.a., the TOT indicator readings for the tester setting temperatures in Table 1, Part I, of the SB are not within the indicator reading range, perform the actions specified in the Accomplishment Instructions, Part I, paragraph (6)(b) of the applicable SB.

2. For Model 600N helicopters \-

Test the TOT indicating system, including the electronic control unit (ECU) TOT sensing system, to verify correct calibration in accordance with the Accomplishment Instructions, Part I, of MDHI SB600N-026, dated 11 January 2000.

b. If, during any calibration test required by Requirement 2.a., the TOT indicator readings for the tester setting temperatures in Table 1, Part I, of the SB are not within the indicator reading range, perform the actions specified in the Accomplishment Instructions, Part I, paragraph (7)(b) of the SB.

c. If, during any test required by Requirement 2.a., the Full Authority Digital Electronic Control (FADEC) maintenance lap-top terminal does not indicate ECU TOT within ± 5 degrees Celsius of the tester setting in Table 1, Part I, of the SB, perform the actions specified in the Accomplishment Instructions, Part III, of the SB.

Note: FAA AD 2000-08-22 Amdt 39-11708 refers.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

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 39.1 (1) of CAR 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.

AD/HU 369/103 Turbine Outlet Temperature AD/HU 369/103 Turbine Outlet Temperature Wire Harness 7/2000

AD/HU 369/103 Turbine Outlet Temperature Wire Harness 7/2000

Requirement: 1. For Model 369E, 369D, and 500N helicopters -

Test the TOT indicating system to verify correct calibration in accordance with the Accomplishment Instructions, Part I, of MD Helicopters, Inc. (MDHI) Service Bulletin SB369D-199, SB369E-093, SB500N-019, dated 11 January 2000, as applicable.

b. If, during any test required by Requirement 1.a., the TOT indicator readings for the tester setting temperatures in Table 1, Part I, of the SB are not within the indicator reading range, perform the actions specified in the Accomplishment Instructions, Part I, paragraph (6)(b) of the applicable SB.

2. For Model 600N helicopters \-

Test the TOT indicating system, including the electronic control unit (ECU) TOT sensing system, to verify correct calibration in accordance with the Accomplishment Instructions, Part I, of MDHI SB600N-026, dated 11 January 2000.

b. If, during any calibration test required by Requirement 2.a., the TOT indicator readings for the tester setting temperatures in Table 1, Part I, of the SB are not within the indicator reading range, perform the actions specified in the Accomplishment Instructions, Part I, paragraph (7)(b) of the SB.

c. If, during any test required by Requirement 2.a., the Full Authority Digital Electronic Control (FADEC) maintenance lap-top terminal does not indicate ECU TOT within ± 5 degrees Celsius of the tester setting in Table 1, Part I, of the SB, perform the actions specified in the Accomplishment Instructions, Part III, of the SB.