SAAB SF340 Series Aeroplanes
SAAB SF340 Series Aeroplanes
SAAB SF340 Series Aeroplanes
| AD/SF340/97 | DC Generating System - Undervoltage Protection | 2/2005 |
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| Applicability: | SAAB SF340A Serial No. 004 to 159 inclusive, SAAB 340B Serial No. 160 to 367 inclusive. |
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| Requirement: | Install a Generator Control Unit (GCU) model 51539-007B in accordance with SAAB AB Service Bulletin 340-24-026 Rev 2 dated 29 October 2004 or later revision. |
| Note 1: Installation of GCU model 51539-007B terminates the repetitive brush inspection required by AD/SF340/96. | |
| Note 2: LFV AD No 1-197 (EASA Approval 2004-10860) refers. | |
| Compliance: | No later than three years after the effective date of this Directive. |
| This Airworthiness Directive becomes effective on 17 February 2005. | |
| Background: | A premature failure of the generator can cause a low voltage situation in flight, if the aircraft is not equipped with the GCU 51539-007B. This GCU was included in the type design from serial number 368 and has been available as an option for earlier manufactured aeroplanes. Service experience has shown that installation of the new GCU is needed in order to meet the requirements of continued airworthiness in accordance with EC regulation 1702/2003 Part 21A.3B and associated guidance material. |
View image in the official source
James Coyne
Delegate of the Civil Aviation Safety Authority
13 December 2004
The above AD is notified in the Commonwealth of Australia Gazette on 26 January 2005.