Looking through the ATSB reports today and found this incident. This happened on the 29 May 2007 in a B300. Incident No: 200703363
Quote "During a runway 12 RNAV approach to Lockhart River in IMC, the aircraft's EGPWS activated a momentary terrain warning. The crew carried out a missed approach and elected to carry out the approach again. During the second approach, at the same position as in the first approach, the EGPWS activated momentarily before returning to normal. The crew established visual reference and landed safely.
The investigation is continuing."