As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORF/DCA - FLT 3144 - THE AIRCRAFT RETURNED TO THE GATE PRIOR TO TAKEOFF BECAUSE THE AIRSTAIR DOOR SEAL AND EMERGENCY DOOR SEAL, PN 75210458109, WOULD NOT INFLATE. REPAIRED THE BROKEN PRESSURE LINE INSIDE THE RIGHT REAR EMERGENCY EXIT DOOR. LATER IN THE DAY, REMOVED AND REPLACED THE UPPER AIRSTAIR DOOR END PLATE SEALS.