HELI PLT FLIES ACFT WITH QUESTIONABLE MAINT LOG ENTRY.

Narrative

A POSSIBLE VIOLATION OCCURRED THROUGH AN INADVERTENT OVERFLT OF A COMPANY REQUIRED INSPECTION LISTED IN THE FAR 135 OPS SPECS. 4 PLTS OVERFLEW A 50 HR PMI INSPECTION ON ACFT XYZ. A LOGBOOK ENTRY WAS MADE ON OCT/XX/95 REFLECTING THE INSPECTION COMPLETED. HOWEVER; AT SOME POINT; THE MECH CROSSED OUT THE ENTRY AND MARKED IT 'ENTERED IN ERROR.' IT IS APPARENT THE MECH CONDUCTED THE INSPECTION; LISTED IT IN THE LOGBOOKS; THEN UPON SECOND REVIEW MISREAD THE INSPECTION DATE AND OPTED TO ELIMINATE THE WRITE-UP IN FAVOR OF THE FUTURE DATE WHEN HE WOULD RE-ENTER THE INSPECTION. EVENTS: I WAS DIRECTED TO FLY A REPLACEMENT ACFT TO GARDEN BANKS 189; GULF OF MEXICO; AND RETURN WITH ACFT XYZ TO PATTERSON; LA; FOR MAJOR MAINT. ON ARR AT GB189; I SPOKE WITH THE OFFSHORE PLT WHO WAS FLYING XYZ THAT DAY FOR 1.2 HRS. A CHK OF THE LOGBOOK ENTRIES APPEARED VALID. PREFLT; AND TALK WITH PLT SHOWED NO PROBS WITH ACFT XYZ. I DEPARTED FOR PATTERSON 1.8 HR FLT. ON OCT/FRI/95 I WAS ADVISED OF A POSSIBLE VIOLATION ALONG WITH THE OTHER PLTS. THE SIT IS UNDER REVIEW.