AD/B727/209 Fuel System Airworthiness Limitations (Cth)
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 39.001(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.
Boeing 727 Series Aeroplanes
| AD/B727/209 | Fuel System Airworthiness Limitations | 5/2008 |
Applicability: | Model 727, 727C, 727-100, 727-100C, 727-200 and 727-200F series aeroplanes. |
Requirement: | 1. Revise the approved system of maintenance to incorporate the information in the following sections of Boeing 727-100/200 Airworthiness Limitations (AWLs), D6-8766-AWL, dated March 2006; except that the initial inspection required Requirement 2 of this Directive must be done at the applicable compliance time specified in that Requirement. |
| Section A, “SCOPE”, Section B, “FUEL SYSTEMS AIRWORTHINESS LIMITATIONS”, Section C, “SYSTEM AWL PAGE FORMAT”, and Section D, “AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS”. | |
| Accomplishing the revision in accordance with a later revision of Document | |
| 2. Carry out a detailed inspection of the wire bundles routed over the centre fuel tank for damaged clamps, wire chafing and wire bundles in contact with the surface of the centre fuel tank, in accordance with AWL No. 28-AWL-01 of Section D of Document D6-8766-AWL. | |
| Note 1: For the purposes of this Directive, a detailed inspection is “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.” | |
| 3. If any discrepancy is found during the Requirement 2 inspection, repair the discrepancy before further flight in accordance with AWL No. 28-AWL-01 of Section D of Document D6-8766-AWL. |
| Accomplishing the Requirement 2 or 3 actions in accordance with a later revision of Document D6-8766-AWL is an acceptable method of compliance if the revision is approved by the Manager, Seattle ACO. Accomplishing AWL No. 28-AWL-01 as part of an approved system of maintenance program prior to the applicable compliance time specified below constitutes compliance with Requirements 2 and 3. | |
| Note 2: FAA AD 2008-04-10 Amdt 39-15382 refers. | |
Compliance: | For Requirement 1 - Before 16 December 2008. |
| For Requirement 2 - At the later of the compliance times specified below: | |
| a. Prior to the accumulation of 36,000 total flight cycles, or within 120 months since the date of issue of the original standard airworthiness certificate or the date of issue of the original export certificate of airworthiness, whichever occurs first. | |
| b. Within 72 months after the effective date of this Directive. | |
| For Requirement 3 - Before further flight after the Requirement 2 inspection. | |
| This Airworthiness Directive becomes effective on 8 May 2008. | |
Background: | This Directive requires the revision of the approved system of maintenance by incorporating new AWLs for fuel tank systems to satisfy United States Special Federal Aviation Regulation No 88 (SFAR 88) requirements. The Directive also requires the initial inspection of a certain repetitive AWL inspection to phase in that inspection together with any necessary repair. |
| The Directive results from a design review of the fuel tank systems and is issued to prevent the potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which, in combination with flammable fuel vapours, could result in a fuel tank explosion and consequent loss of the aeroplane. |
David Punshon
Delegate of the Civil Aviation Safety Authority
12 March 2008
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