Air carrier crew reported receiving an ATC alert of a ground obstacle from ATC while descending below the FAF altitude on a visual approach at night prior to a published segment of the approach. The First Officer climbed to the FAF altitude then continued the approach to a landing.
Synopsis
Air carrier crew reported receiving an ATC alert of a ground obstacle from ATC while descending below the FAF altitude on a visual approach at night prior to a published segment of the approach. The First Officer climbed to the FAF altitude then continued the approach to a landing.
Narrative
We were just cleared for a visual approach into 15 right. It was nighttime and clear. We could see the runway from 20 miles out. After being cleared for the visual approach to 15 right we set the altitude to the final approach fix which was 2000 feet and armed the APPCH. About 2 miles from KEVVN still in the left turn to join; we got a radio call from ATC saying we were close to antennas that are to the left of the approach at 1464 feet. At no point did we get a terrain alert. As soon as we got the radio call; my FO who is flying immediately spun the altitude up to 2500 feet and we climbed to that altitude. At no point where we unstable and we continued the visual person to 15 right. We landed with no further issue.Suggestions: I think the 10-7 page could be more clear on the arrival section. It does say something about expect to maintain 3000 feet until 10 DME from Baltimore; VOR; but it doesn't say which runway. I think that could be clarified and I will submit a report to update that for the visual for 15 right at night to be aware of antennas to the left of the final approach course.
Second reporter narrative
We had been cleared for the visual approach for 15R at 2500 feet. It was clear and nighttime. We had visual on the airport and runway 15-20 miles out. After being cleared for the approach I set the final approach fix at 2000; CAMI (Confirm; Activate; Monitor and Intervene) with Captain. As the plane started to turn base to final roughly 2-3 miles from KEVVN with a decent we were notified about being close to antennas left of the approach course; Captain responded insight which we both saw. We hadn't received any terrain alert from the plane. I immediately initiated a climb back to 2500 feet. We became stable on the approach and continued visually 15R with no additional issues.Suggestions: The 10-7 for BWI could use more clarity on being cleared for visual approaches especially for the 15s. It does specify expect 3000 feet 10 DME from the VOR but doesn't clarify why or which runways to use caution for at night.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.