Medium Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter CFTT / CFIT
General None Reported / Taken
Aircraft
We were cleared for the ILS 17 into MHT; when we were descended to; 2500 ft given heading 140 to intercept; and cleared for the approach. We were passing a scattered layer when we got the field in sight. As the aircraft turned from heading 140 and intercepted the localizer; we received 1 'Terrain' aural annunciation. I immediately reached to turn off the autopilot; asked the FO (First Officer) to look for terrain; and scanned around myself. We saw no terrain and received no further warnings. I left the autopilot on and had the aircraft continue the approach and land in a normal; stabilized fashion. I believe this was an anomaly.
[Report narrative contained no additional information.]
Air carrier flight crew reported receiving what was suspected to be an erroneous aural terrain warning while intercepting the Runway 17 localizer at MHT.