AD/B767/100 Amdt 2 - Electrical Wire Bundles

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Legislation au F2006B03281 In force Legislative Instrument

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Boeing 767 Series Aeroplanes

 

AD/B767/100

Amdt 2


Electrical Wire Bundles 1/2000

 

Applicability: Model 767 aeroplanes line numbers 1 through 683 inclusive equipped with forward galley air chillers.

 

Requirement: 1. If not previously accomplished, perform a detailed visual inspection in accordance with Boeing Message Number M-7200-98-00140 dated 11 January 1998, for the following:

 

  1. damage or chafing of the electrical wiring bundles located forward of the P37 panel adjacent to the AE0218 disconnect panel, and

 

b.    adequate clearance between the wire bundles and adjacent forward galley air chiller.

 

2.    If, following the Requirement 1 inspection, no damage or chafing is detected and adequate clearance exists either:

 

  1. repeat the Requirement 1 visual inspection, or

 

b.    install protective tape or sleeve over the wire bundles in accordance with Section 20-10-11 of the Boeing Standard Wiring Practices Manual, using one of the following materials shall be used to protect the bundles: RT876 sleeve,

TFE-2X standard wall thickness sleeve, P-440 tape, Scotch 70 tape or CHR-A- 2005 tape.

 

3.    If, following the Requirement 1 inspection, inadequate clearance exists, but no damage or chafing is detected, reroute the wire bundles in accordance with the Boeing message and install protective tape or sleeve over the wire bundles in accordance with Section 20-10-11 of the Boeing Standard Wiring Practices Manual, using one of the following materials to protect the bundles: RT876 sleeve, TFE-2X standard wall thickness sleeve, P-440 tape, Scotch 70 tape or CHR-A- 2005 tape.

 

4.    If, following the requirement 1 inspection, damage or chafing is evident, but adequate clearance exists:

 

  1. repair the wire bundles in accordance with the Boeing message, and then accomplish either of the following:
  2. repeat the Requirement 1 visual inspection, or

 

c.    install protective tape or sleeve over the wire bundles in accordance with Section 20-10-11 of the Boeing Standard Wiring Practices Manual, using one of the following materials to protect the bundles: RT876 sleeve, TFE-2X standard wall thickness sleeve, P-440 tape, Scotch 70 tape or CHR-A-2005 tape.

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 

5.    If, following the Requirement 1 inspection, both inadequate clearance exists and damage or chafing is evident, repair and reroute the wire bundles in accordance with the Boeing message and then install protective tape or sleeve over the wire bundles in accordance with Section 20-10-11 of the Boeing Standard Wiring Practices Manual, using one of the following materials to protect the bundles: RT876 sleeve, TFE-2X standard wall thickness sleeve, P-440 tape, Scotch 70 tape or CHR-A-2005 tape.

 

Note: FAA AD 98-07-26 Amdt 39-10448 refers.

 

Compliance: 1. The original compliance of ‘Prior to 27 May 1998’ remains unchanged.

 

2.    a. Each time the forward galley air chiller is removed and reinstalled.

 

b. Prior to further flight immediately after the Requirement 1 inspection.

 

3.    Prior to further flight immediately after the Requirement 1 inspection.

 

4.    a. Prior to further flight immediately after the Requirement 1 inspection.

 

b. Each time the forward galley air chiller is removed and reinstalled.

 

c. Prior to further flight immediately after the Requirement 1 inspection.

 

5.    Prior to further flight immediately after the Requirement 1 inspection.

 

Note: Compliance with Requirements 2.b., 3, 4.c. or 5 are considered terminating action for the repetitive requirement 2.a. and 4.b. inspections.

 

This Amendment becomes effective on 31 December 1999.

 

Background: Amendment 1 was issued following advice from the FAA that two typographical errors in AD 98-07-26 had been identified and corrected. This amendment corrects the references to the Boeing Standard Wiring Practices Manual and the TFX-2X standard wall thickness sleeving part number.

 

Amendment 2 is issued to correct an error in the Applicability Statement.

 

The FAA has received a report that soon after take-off the engine indication and crew alerting system (EICAS) displayed several caution messages and several circuit breakers tripped. After landing, the cabin crew reported smoke coming from the forward galley air chiller, located below the forward galley door under the floor. The smoke was produced by burning wires.

 

Investigation revealed that approximately 30 wires were damaged in wire bundles W272, W656, W782 and W254, forward of the P37 panel, adjacent to the AE0218 disconnect panel, and above the aft side of the forward galley air chiller. Further investigation revealed that the wire bundles did not have protective taping or sleeving and that adequate clearance did not exist between the wire bundles and the adjacent chiller.

 

This directive introduces procedures to ensure that damage to the wire bundles is detected and repaired. Additionally, the directive provides an optional method of preventing the damage from occurring. These measures ensure that the damage to the wire bundles does not present a fire hazard to passengers and crew.

 

Amendment 1 of this Airworthiness Directive became effective on 10 September 1998.

 

The original issue of this Airworthiness Directive became effective on 29 April 1998.

Overview

The Boeing 767 Series Aeroplanes AD/B767/100 Amendment 2, issued under the Civil Aviation Regulations 1998, aims to address the risk of electrical wire bundle damage in certain Boeing 767 models, particularly those equipped with forward galley air chillers. This legislative instrument was introduced by the Commonwealth of Australia, specifically the Civil Aviation Safety Authority, to ensure the safety of passengers and crew on board these aircraft. The directive was enacted to prevent fire hazards caused by damaged electrical wire bundles that may come into contact with the forward galley air chiller, potentially leading to serious safety incidents. This amendment to the original airworthiness directive seeks to correct previous errors and enhance the safety measures related to the inspection and maintenance of these wire bundles. The policy objective is to mandate thorough inspections and appropriate repairs or protective measures for the identified wire bundles, ensuring they are adequately protected and maintained to prevent future incidents.

Scope and Application

The Boeing 767 Series Aeroplanes AD/B767/100 Amendment 2 Electrical Wire Bundles applies to model 767 aeroplanes within line numbers 1 through 683 inclusive that are equipped with forward galley air chillers. The scope of the legislation is aimed at ensuring the airworthiness of these specific aircraft models by addressing issues related to the electrical wiring bundles located forward of the P37 panel adjacent to the AE0218 disconnect panel. The directive mandates detailed visual inspections, repairs, rerouting, and the installation of protective tape or sleeving to prevent potential hazards. The requirements are enforced under the Commonwealth of Australia's Civil Aviation Regulations 1998, specifically within Part 39 - 105, which governs civil aviation safety. Compliance with these directives must be met by operators of the specified aircraft models, with inspections and actions required at various stages, such as before further flight, each time the forward galley air chiller is removed and reinstalled, and following specific repair procedures. The directive aims to mitigate fire hazards associated with damaged or inadequately protected wiring bundles, ensuring the safety of passengers and crew.

Key Provisions

The main sections of this legislative instrument, AD/B767/100 Amendment 2, focus on the mandatory procedures to be followed for inspecting, repairing, and protecting electrical wire bundles in Boeing 767 series aeroplanes, particularly those equipped with forward galley air chillers. Section 1 details the necessity of performing a visual inspection for damage, chafing, and clearance of the wire bundles (section 1(a)-(b)). If no damage is found and clearance is adequate, the directive permits either repeating the inspection or installing protective tape or sleeves over the wire bundles (section 1(b)). If clearance is inadequate but no damage is detected, the directive mandates rerouting the wire bundles and then applying protective measures (section 1(c)). If damage is detected, the directive requires repairing the bundles before either repeating the inspection or applying protective measures (section 1(d)). If both inadequate clearance and damage are found, the directive requires both repairing and rerouting the wire bundles followed by protective measures (section 1(e)). The obligations under this Airworthiness Directive (AD) are clear and specific. Operators of Boeing 767 aeroplanes, particularly those with line numbers 1 through 683, are required to conduct the visual inspections as described, and follow through with any necessary repairs, rerouting, or protective measures as identified. Compliance must occur before further flights after the initial inspection and each time the forward galley air chiller is removed and reinstalled. This includes specific actions like repeating the inspection, repairing wire bundles, and installing protective sleeves or tape using specified materials as detailed in the Boeing Standard Wiring Practices Manual (section 2). Compliance with certain actions, such as repeating inspections or applying protective measures, terminates the need for other repetitive inspections (section 2.b., 3, 4.c., and 5). Failure to comply with the requirements of this AD can result in serious safety issues, including potential fire hazards. While the AD itself does not explicitly state penalties for non-compliance, the overarching Civil Aviation Regulations 1998, under which this AD operates, provide a framework for enforcement. Non-compliance with airworthiness directives can lead to enforcement actions by the Civil Aviation Safety Authority (CASA), including fines and potential grounding of the aircraft until compliance is achieved. The severity of the penalties can vary based on the nature and extent of the non-compliance, but they are intended to ensure that all aircraft maintain the highest standards of safety and airworthiness.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.