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Recommendation issued to: Luftfartsverket

Recommendation details
Output No: R20030015
Date issued: 26 February 2004
Safety action status:
Background:

Output text

Safety Recommendation

The Australian Transport Safety Bureau recommends that the Aviation safety Authority of Sweden (Luftfartsverket) assess the safety benefit of mandating Saab Aircraft AB Service Bulletin 340-24-026 incorporating generator control unit modification number 2533.

Initial response
Date issued: 08 July 2004
Response from: Luftfartsverket
Action status: Monitor
Response text:

The Aviation Safety Authority of Sweden (Luftfartsverket) advised that they issued Swedish Airworthiness Directive (SAD) number 1-196 R1 on 7 July 2004.

That airworthiness directive requires a repetitive inspection of brushes fitted to Saab 340 DC generators overhauled in accordance with MRB Task 243104. This action is to be conducted until terminating action, scheduled for October 2004, had been defined.

ATSB Note: The airworthiness directive is an interim measure until an improvement is mandated. The ATSB will monitor the response until the termination action is completed.

Further correspondence
Date issued: 10 November 2004
Response from: Luftfartsverket
Response status: Closed - Accepted
Response text:

The Aviation Safety Authority of Sweden (Luftfartsverket) advised that they issued Swedish Airworthiness Directive (SAD) number 1-197 effective from 5 November 2004. That airworthiness directive requires:

(a) Installation of a Generator Control Unit (GCU) model 51539-007B in accordance with Saab Aircraft AB Service Bulletin SB 340-24-026 Rev 2 dated 29 October 2004 or later revision.

(b) Continuation of brush inspection and wear measurement in accordance with Service Bulletin SAAB 340-24-035 Revision 1 dated 10 September 2004 or later revision until the new GCU is installed.

The new GCU must be installed within three years after the effective date of this SAD.

 
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Last update 03 April 2012