smoc/bh,
we initially thought it was 2 loop faults within 20 seconds. But then with some experimenting on a good engine proved bananaheads correct knowledge. It seems though that we had a very interesting defect, to get a full ENG FIRE (red) we needed a chafe through both loops at the same place going to ground.
Interestingly we actually had the softwire of one loop chafing on the connector screw of the other loop - so we thought this was our defect. Utnil we realised the softwire was 'unshieled' at the point of chafing, and we actually had a 2nd chafe in a completely different part of the system that then took both loops to ground.
A precautionary tale - never assume you've nailed an avionics defect when you find ony ONE chafe!
Regards,
N1 VIbes
Last edited by N1 Vibes; 19th Oct 2008 at 02:18.