As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE, R-1 WINDOW SEAL CAME LOOSE, SEAL WAS VISIBLE AND AIR COULD BE HEARD ESCAPING. RESEALED WINDOW, PRESSURIZED CABIN TO 4.0. NO LEAKS NOTED. RECOMMENDATION: REMAIN OPEN AND MONITOR. WINDOW WAS REPLACED 10 APR 00 ON LP7637470.