0000950134-03-002354 SC 13G/A 1 20030213 CLAYTON MANAGEMENT CO JOHN D WEIL WOODBOURNE PARTNERS L P 0001048869 MO 1231 SC 13G/A 200 N BROADWAY SUITE 825 ST LOUIS MO 63102 3144214600 200 N BROADWAY SUITE 825 ST LOUIS MO 63102 PETROLEUM HELICOPTERS INC 0000350403 4522 720395707 LA 1231 SC 13G/A 34 005-33163 03557381 2001 SE EVANGELINE THRUWAY - LAFAYETTE LA 70508 - PO BOX 90808 LAFAYETTE LA 70509 SC 13G/A 1 c74728a4sc13gza.htm AMENDMENT NO. 4 TO SCHEDULE 13G