B737-700
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 188
Situational Awareness; Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Flight Crew FLC complied w / Automation / Advisory
Human Factors
The First Officer was flying a left base leg direct to the FAF for Runway 10 at BWI. The First Officer set 1;500 feet in MCP window and started a slow Vertical Speed descent from 3;000 feet. At approximately 1;800 MSL the Obstacle Alert sounded. The First Officer leveled [the] aircraft. I then took manual control and initiated a climb. The EGPWS changed to a PULL UP Alert. I pitched up and rapidly increased thrust to correct the flight path (go-around started). Once we climbed to approximately 2;300 FT; conditions returned to normal. We then decided to restart the [descent]; the First Officer became flying pilot again and continued the approach to landing.
While descending to 1;500 MSL (the FAF alt) on an extended left base to a visual approach for Runway 10; we received an Obstacle Alert.After climbing approximately 300 FT; the alerts subsided and the approach was continued uneventfully. Simultaneously; as we were executing the procedure; we noticed several towers in our vicinity and assume that was the cause of our alert.A more detailed chart review would have revealed the towers' existence and resulted in an intermediate level off until they were visually identified.
While descending on a base leg direct to the FAF; cleared for a visual approach to Runway 10 at BWI and planning to cross the FAF at the ILS charted 1;500 MSL the flight crew of a B737NG experienced an EGPWS terrain warning and directive to 'pull up'. They did so and; when the alarm silenced continued to a safe landing.