Medium Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 43; Flight Crew Total 43; Flight Crew Type 43
Troubleshooting; Distraction; Human-Machine Interface; Workload
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Aircraft; Equipment / Tooling
Approximately 10 to 20 seconds after take off; we noted an amber RA (Radio Altimeter) flag on the Captain's PFD.  All other systems and indications were normal; and the First Officer's radio altimeter continued to function normally. The RA flag lasted for approximately 15 seconds; and then all indications and functions returned to normal. We reported the anomaly to Houston; sent a maintenance report; and reported the event to dispatch. The rest of the flight was conducted normally; and without further incident.
An air carrier Captain reported on departure from IAH the Captain's side Radio Altimeter failed for about 15 seconds.