Narrative:

I was pilot flying and the first officer (first officer) was pilot monitoring. We were receiving vectors from potomac approach into charlottesville. We were downwind from runway 3 at 3;000 feet. We received a terrain warning passing over an obstacle chartered at 1;795 feet.while receiving vectors; we briefly passed over the obstacle of 1;795 ft at 3;000 feet. The aircraft terrain warning sounded once. We were not yet configured to land and were at a lower power setting. We both noticed that immediately after the warning had occurred; our RA was briefly at 1;160 feet.on vectors from potomac approach; we passed over the obstacle of 1;795 feet at 3;000 feet. We had briefed the obstacle on the approach plate prior to beginning our descent into charlottesville. We were at a lower thrust setting because we were in level flight; receiving radar vectors; and not yet configured for the approach. We received the terrain warning and it stopped almost as soon as it had occurred; after one warning. I was preparing to respond; but it subsided before I could react to the condition. We both noticed that right after the warning; that our RA was briefly at 1;160 feet.I heard the terrain warning and I was in the process of beginning to perform the terrain escape maneuver per the aom 1; by disengaging the autopilot and following the profile; however; the warning had stopped. The warning was very brief and only alarmed once. I noticed that when I was going to disconnect the autopilot and the warning had stopped; that our RA was briefly at 1;160 feet. We were both aware of the obstacle through the briefing of the approach chart and were above our MSA for our sector. We maintained 3;000 feet; contacted approach to make sure we had the correct altimeter setting of 30.24 and that we were showing level at 3;000 feet. The controller confirmed that the altimeter setting of 30.24 was correct and that we were level at 3;000 feet. The crew was completely situationally aware of all obstacles and terrain in the area.possibly quicker to respond to a terrain warning upon hearing the initial warning.

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Original NASA ASRS Text

Title: EMB-145 flight crew reported a terrain warning while flying over an antennae at ATC assigned safe altitude.

Narrative: I was Pilot Flying and the FO (First Officer) was Pilot Monitoring. We were receiving vectors from Potomac Approach into Charlottesville. We were downwind from Runway 3 at 3;000 feet. We received a terrain warning passing over an obstacle chartered at 1;795 feet.While receiving vectors; we briefly passed over the obstacle of 1;795 ft at 3;000 feet. The aircraft terrain warning sounded once. We were not yet configured to land and were at a lower power setting. We both noticed that immediately after the warning had occurred; our RA was briefly at 1;160 feet.On vectors from Potomac Approach; we passed over the obstacle of 1;795 feet at 3;000 feet. We had briefed the obstacle on the approach plate prior to beginning our descent into Charlottesville. We were at a lower thrust setting because we were in level flight; receiving radar vectors; and not yet configured for the approach. We received the terrain warning and it stopped almost as soon as it had occurred; after one warning. I was preparing to respond; but it subsided before I could react to the condition. We both noticed that right after the warning; that our RA was briefly at 1;160 feet.I heard the terrain warning and I was in the process of beginning to perform the terrain escape maneuver per the AOM 1; by disengaging the autopilot and following the profile; however; the warning had stopped. The warning was very brief and only alarmed once. I noticed that when I was going to disconnect the autopilot and the warning had stopped; that our RA was briefly at 1;160 feet. We were both aware of the obstacle through the briefing of the approach chart and were above our MSA for our sector. We maintained 3;000 feet; contacted approach to make sure we had the correct altimeter setting of 30.24 and that we were showing level at 3;000 feet. The Controller confirmed that the altimeter setting of 30.24 was correct and that we were level at 3;000 feet. The crew was completely situationally aware of all obstacles and terrain in the area.Possibly quicker to respond to a terrain warning upon hearing the initial warning.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.