Commonwealth legislation

AD/R44/14 - Wire Harness and Fuel Line Chafing

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires owners/operators of Robinson R44 helicopters (serial numbers 0002–0462) to remove a seatback cover, inspect for contact or chafing between a specified wire harness and the fuel line above the fuel shutoff valve, replace any chafed fuel line, torque the fittings to 12.4–14.7 Nm, and install a 75 mm spiral wrap on the fuel line. The stated purpose is to prevent wire-to-fuel contact (and the associated ignition risk); operators pay for inspections, parts and labour, and maintenance staff must apply judgement on chafing and use specified torque.

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Current sections

Direct links to the current provisions in AD/R44/14 - Wire Harness and Fuel Line Chafing.

AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
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/R44/14 Wire Harness and Fuel Line Cha

AD/R44/14 Wire Harness and Fuel Line Chafing 6/2000

Applicability: Model R44 helicopters, serial numbers 0002 through 0462.

Requirement: 1. Accomplish the following actions to prevent contact between the wire harness and the fuel line assembly:

Remove the cover, part number (P/N) C474-1, from between the rear seatbacks.

b. Inspect the wire harness, P/N C059, and the fuel line assembly, P/N C726-2, above the fuel shutoff valve for contact. If the wire harness contacts the fuel line assembly, inspect for chafing.

c. If chafing has occurred between the wire harness and the fuel line assembly, replace the fuel line with an airworthy fuel line assembly. Torque the fuel line nuts to 12.4-14.7 Nm (110-130 in-lbs). Verify that clearance exists between the fuel line assembly and the wire harness.

d. Install a 75 mm (3 in) section of spiral wrap tubing, P/N B161-8, on the fuel line assembly as shown in Figure 1. Push the spiral wrap tubing down until it is against the fuel line fitting.

AL 6/2000

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/R44/14 Wire Harness and Fuel Line Cha AD/R44/14 Wire Harness and Fuel Line Chafing 6/2000

AD/R44/14 Wire Harness and Fuel Line Chafing 6/2000

Applicability: Model R44 helicopters, serial numbers 0002 through 0462.

Requirement: 1. Accomplish the following actions to prevent contact between the wire harness and the fuel line assembly:

Remove the cover, part number (P/N) C474-1, from between the rear seatbacks.

b. Inspect the wire harness, P/N C059, and the fuel line assembly, P/N C726-2, above the fuel shutoff valve for contact. If the wire harness contacts the fuel line assembly, inspect for chafing.

c. If chafing has occurred between the wire harness and the fuel line assembly, replace the fuel line with an airworthy fuel line assembly. Torque the fuel line nuts to 12.4-14.7 Nm (110-130 in-lbs). Verify that clearance exists between the fuel line assembly and the wire harness.

d. Install a 75 mm (3 in) section of spiral wrap tubing, P/N B161-8, on the fuel line assembly as shown in Figure 1. Push the spiral wrap tubing down until it is against the fuel line fitting.

AL 6/2000