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AD/SF340/102 - Fuel Quantity Indication System - Modification 3163
SAAB SF340 Series AeroplanesSAAB SF340 Series Aeroplanes
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SAAB SF340 Series Aeroplanes
| AD/SF340/102 | Fuel Quantity IndicationSystem - Modification 3163 | 9/2007 |
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| Applicability: | SF340A and 340B aeroplanes. |
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| Requirement: | 1. If not previously accomplished, modify the fuel quantity indication system (FQIS) wiring by incorporating Modification 3163 in accordance with SAAB Service Bulletin SB-340-28-025 dated 26 February 2007 or later revision approved by the European Aviation Safety Agency (EASA). |
| 2. Perform an operational and functional test of the fuel measuring indication system in accordance with SB-340-28-025 dated 26 February 2007 or later revision approved by the EASA. | |
| Note: EASA AD 2007-0169 refers. | |
| Compliance: | For Requirement 1 - Within 72 months after the effective date of this Directive. |
| For Requirement 2 - Before further flight, after accomplishing the Requirement 1 modifications. | |
| This Airworthiness Directive becomes effective on 30 August 2007. | |
| Background: | Subsequent to accidents involving Fuel Tank System explosions in flight (Boeing 747-131 flight TWA800) and on the ground, the United States Federal Aviation Administration (FAA) published Special Federal Aviation Regulation 88 (SFAR 88) in June 2001.In their Letters referenced 04/00/02/07/01-L296 dated 4 March 2002 and 04/00/02/07/03-L024, dated 3 February 2003, the European Joint Aviation Authorities (JAA) recommended the application of a similar regulation to the European National Aviation Authorities (NAA).Under this regulation, all holders of type certificates for passenger transport aircraft with either a passenger capacity of 30 or more, or a payload capacity of 7,500 pounds (3402 kg) or more, which have received their certification since 1 January 1958, were required to conduct a design review against explosion risks. |
| This Directive requires the modification of the FQIS signal conditioner 28 VDC wiring to ensure separation and is a consequence of the design review. |
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David Punshon
Delegate of the Civil Aviation Safety Authority