Commonwealth legislation

AD/ENST 28/23 - RAJAY Turbocharger and Fuel Nozzle Vent Line - Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Requires Enstrom F-28C and 280C owners/operators to modify RAJAY turbochargers or the fuel-nozzle vent line according to turbocharger serial number. The work involves a compressor-housing gasket replacement or repositioning a union and reassembly, carried out per the Enstrom Maintenance Manual. Compliance is required within 100 hours after 29 February 1980. The stated purpose is to prevent turbocharger damage and possible engine power loss; direct costs (parts, labour) and compliance decisions rest with operators and maintenance personnel (Parts 1–2; Compliance).

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Direct links to the current provisions in AD/ENST 28/23 - RAJAY Turbocharger and Fuel Nozzle Vent Line - Modification.

AD/ENST 28/23 - RAJAY Turbocharger and Fuel Nozzle Vent Line - Modification

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Enstrom F-28 Series Helicopters

AD/ENST 28/23 RAJAY Turbocharger and Fuel Nozzle Vent Line - Modification

Applicability: Model F-28C and 280C.

Requirement: Part 1: For turbocharger S/Nos. less than 70484:

12/79

(a) Remove the turbocharger from the helicopter in accordance with the Enstrom Maintenance Manual.

(b) Using a 5/32 Allen wrench, remove the six countersunk cap screws that secure the compressor housing to the bearing housing assembly. If necessary, gently tap the compressor

(c) Reinstall the compressor housing by placing the turbocharger on the compressor housing using a new gasket, Rajay P/N TC6-44. Secure with six cap screws and tighten evenly and alternately to 90 + 10 inch- pounds.

(d) Reinstall the turbocharger in the helicopter in accordance with the Enstrom Maintenance Manual.

RAJAY Turbocharger and Fuel Nozzle Vent Line - Modification

Part 2: for turbocharger S/Nos. 70484 and higher:

(a) Remove the induction system air inlet filter in accordance with the Enstrom Maintenance Manual.

(b) Remove the AN815-6D union which attaches the fuel nozzle air vent installation to the induction system air inlet filter container. Save the AN924- 6D nut which was holding the union in place, for reinstallation, in accordance with step D.

(c) Install an AN832-6D union, in place of the AN815-6D union, so that the AN924-6D nut is outside of the filter container.

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

(d) Attach the fuel nozzle air vent line to the AN832-6D union.

(e) Replace the air filter in accordance with the Enstrom Maintenance Manual.

Note: FAA AD 79-02-01 AMDT. 39-3390 refers.

Compliance: Within 100 hours time in service after 29 February 1980.

Background: This Directive is issued in order to prevent damage to the turbo charger and possible engine power loss.

Source text

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

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?xml version="1.0" encoding="utf-8" standalone="no"?>

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Enstrom F-28 Series Helicopters

AD/ENST 28/23 RAJAY Turbocharger and Fuel Nozzle Vent Line - Modification

Applicability: Model F-28C and 280C.

Requirement: Part 1: For turbocharger S/Nos. less than 70484:

12/79

(a) Remove the turbocharger from the helicopter in accordance with the Enstrom Maintenance Manual.

(b) Using a 5/32 Allen wrench, remove the six countersunk cap screws that secure the compressor housing to the bearing housing assembly. If necessary, gently tap the compressor

(d) Reinstall the turbocharger in the helicopter in accordance with the Enstrom Maintenance Manual.

Part 2: for turbocharger S/Nos. 70484 and higher:

(a) Remove the induction system air inlet filter in accordance with the Enstrom Maintenance Manual.

(c) Install an AN832-6D union, in place of the AN815-6D union, so that the AN924-6D nut is outside of the filter container.

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

(d) Attach the fuel nozzle air vent line to the AN832-6D union.

(e) Replace the air filter in accordance with the Enstrom Maintenance Manual.

Note: FAA AD 79-02-01 AMDT. 39-3390 refers.