As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAF - FLIGHT 3752, THE CREW REPORTED AN ATTCS NO MARGIN WARNING ON TAKE OFF ROLL. THE TAKE OFF WAS ABORTED, AND THE AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NUMBER ONE ENGINE LOWER COMPRESSOR BLEED VALVE, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.