What was found
AFTER TAKE OFF FROM LAS VEGAS, NM, WE HAD A RAPID DECOMPRESSION AT FL260 WITH AIRFLOW HEARD AT THE CABIN DOOR FOLLOWED BY CABIN ALT HI ANNUNCIATOR AND MASTER WARNING. WE DONNED OUR O2 MASKS AND DESCENDED TO 15K' AND DIVERTED TO ABQ. MAINTENANCE FOUND PASSENGER DOOR SEAL DAMAGED. REPLACED DOOR SEAL, OPS CHECK GOOD.