Something similar happened on a Herc' in 72/73 - the nav'; applied grivation east instead of west ( or was it the other way round? My brain hurts! ) lo and behold landfall was IIRC Greenland and not Newfoundland or Labrador. On arrival at either Gander/Goose the skipper sent a signal outlining what had happened, including that the nav' had realised and owned up to his error.
An d the VC10 around 1968 but he didn't own up.