What was found
FLT#159, BOS-PHL. (REJECT TO TAKEOFF) 'DOOR PAX AFT OPEN INDICATION ON TAKE OFF ROLL, REJECTED TAKE OFF AT 60 KNOTS. RTO DOOR INDICATION INOP ( DOOR POS IND ON MFD & ASSC EICAS-PAX (L1/L2) AND SERVICE (R1/R2) ).' (SUPPLEMENTAL TO FOLLOW)