It was closer to two years.
And now the new Bristow (nee OLOG) is starting the phase out of their single engined ships by selling half off (53) in the GOM one go, and moving the rest of their GOM fleet to closer to where BOH would be today if the time had been right to operate to proper standards.
No great surprise when one of the first major decisions of the new CEO was to take PAAN out from the control of New Iberia.
If the Bristow GOM operation (
is it still called Air Logistics?) doesn't make the leap now, you can look back to September 1981 and this press cutting I shown by one of the Bristow Houston staff at what might happen in Louisiana:
http://www.flightglobal.com/pdfarchi...istow%20wessex
Apparently some of Alan Bristow's thinking on safety lives on in Houston.