AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/AMD 50/20 and issues the following 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.
AMD Falcon 50 and 900 Series Aeroplanes
AD/AMD 50/20
Amdt 1
Fuel Feeder Tanks Double Skin 6/2002
Applicability: Dassault Aviation Mystere Falcon 50 Aircraft, serial numbers 222 through 286, 288,
290, and 291.
Requirement: 1. Inspect in accordance with the procedure specified in Maintenance Manual procedure 686.3/1.
2. Action in accordance with Dassault Aviation Service Bulletin F50-328 Revision 1.
Note: DGAC AD 2001-604-038(B) R1 refers.
Compliance: 1. Before 30 March 2001, and thereafter at intervals not to exceed thirteen months; until accomplishment of Requirement 2.
2. a. For aircraft serial number 253 through 286, 288, 290, and 291, within 6 years and 6 months since new.
b. For other applicable aircraft, at the next “C” check after 13 June 2002 or within 6 years and 6 months since new, whichever occurs later.
The compliance times remain unchanged for Requirement 1. This Amendment becomes effective on 13 June 2002.
Background: Inspections have revealed that the sealing of the double skins of the feeder tanks may be deficient and result in fuel fumes in the cabin.
Amendment 1 is issued in response to a new DGAC AD which expands applicability and changes Requirement 2 compliance to account for additional applicable aircraft.
AMD Falcon 50 and 900 Series Aeroplanes
AD/AMD 50/20 Amdt 1 (Continued)
The original issue of this Airworthiness Directive became effective on 7 September 2000.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 11 April 2002
The above AD is notified in the Commonwealth of Australia Gazette on 22 May 2002.
Overview
The Airworthiness Directive (AD) AD/AMD 50/20 issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Regulations 1998, addresses a safety concern related to the fuel feeder tanks of Dassault Aviation Mystere Falcon 50 aircraft, specifically those with serial numbers 222 through 286, 288, 290, and 291. This directive, amended on 13 June 2002, revokes the earlier AD/AMD 50/20 from 7 September 2000 and responds to a new directive from the French Civil Aviation Authority (DGAC) AD 2001-604-038(B) R1, which identified potential deficiencies in the sealing of the double skins of the feeder tanks that could lead to fuel fumes entering the cabin. The AD mandates specific inspection and action procedures, aligning with the requirements set by Dassault Aviation Service Bulletin F50-328 Revision 1, to ensure the safe operation of the affected aircraft.
Scope and Application
The Airworthiness Directive AD/AMD 50/20 Amdt 1 applies specifically to Dassault Aviation Mystere Falcon 50 aircraft, with serial numbers ranging from 222 through 286, 288, 290, and 291. This legislation is issued under the authority of the Civil Aviation Safety Authority (CASA) and has a Commonwealth-wide reach within Australia. The directive mandates actions to address an identified unsafe condition related to the sealing of the double skins of the fuel feeder tanks, which could potentially result in fuel fumes entering the cabin. The specified requirements necessitate inspections in accordance with the procedures outlined in Maintenance Manual procedure 686.3/1, and further actions as detailed in Dassault Aviation Service Bulletin F50-328 Revision 1, with reference to DGAC AD 2001-604-038(B) R1. Compliance with the directive is time-bound, with inspections required before 30 March 2001, and at intervals not exceeding thirteen months thereafter, until the specified corrective actions are completed. Specific compliance timelines are provided, with certain aircraft needing inspections within 6 years and 6 months since new, or at the next "C" check after 13 June 2002, whichever is later. This Airworthiness Directive was initially issued on 7 September 2000, and the amendment, effective from 13 June 2002, was published in the Commonwealth of Australia Gazette on 22 May 2002.
Key Provisions
This Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998 (CAR) pertains specifically to the Dassault Aviation Mystere Falcon 50 aircraft series, serial numbers 222 through 286, 288, 290, and 291. The directive, as outlined in section 1, requires certain actions to be taken in response to safety concerns identified in the fuel feeder tanks of these aircraft. In essence, the directive mandates inspections in accordance with Maintenance Manual procedure 686.3/1 and requires subsequent action as specified in Dassault Aviation Service Bulletin F50-328 Revision 1, referencing DGAC AD 2001-604-038(B) R1.
The obligations imposed by this directive are clear and specific. Firstly, the directive requires that inspections be conducted in line with the specified maintenance manual procedure (section 1(a)). Secondly, following the inspection, actions must be taken according to the detailed instructions provided in the Dassault Aviation Service Bulletin (section 1(b)). The compliance section (section 2) further clarifies the timing of these inspections and actions. For aircraft serial numbers 253 through 286, 288, 290, and 291, the inspections must occur within 6 years and 6 months since the aircraft were new. For other applicable aircraft, inspections must take place at the next "C" check following 13 June 2002 or within 6 years and 6 months since the aircraft were new, whichever occurs later. Moreover, the directive specifies that inspections must be conducted before 30 March 2001 and thereafter at intervals not exceeding thirteen months until the specified actions are completed.
Failure to comply with the requirements of this Airworthiness Directive could result in severe consequences. Although the specific penalties or consequences for non-compliance are not detailed in the AD itself, under the Civil Aviation Act 1988 and the Civil Aviation Regulations 1998, non-compliance with ADs can lead to enforcement actions, including fines and potential grounding of the aircraft. The seriousness of such consequences underscores the importance of adhering to the directive to maintain airworthiness and safety standards.