As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - FLT 15 - EN ROUTE JFK-LAX - SHORTLY AFTER TAKEOFF EICAS MESSAGE INDICATED NO NR 1 AND 2 CABIN ALTIMETER INDICATION. MANUAL MODE ALLOWED LIMITED VALVE CONTROL. RETURNED TO JFK AND LANDED WITHOUT FURTHER INCIDENT. REPLACED NR 1 AUTO PRESSURE CONTROLLER. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)