Narrative:

We were given vectors to join localizer for runway xx on a heading of 080. Once on assigned heading we were cleared for the ILS runway xx. The captain (pilot not flying); noting a 'NAVAID untuneable' message in the scratch pad of the mcdu said; 'we're gonna have to go-around.' at that point the aircraft was at 3;000 ft; heading 080 degrees; at an airspeed of 180 KIAS with flaps 18. The aircraft was bouncing around pretty good in moderate turbulence. I (pilot flying) initiated the go-around procedure by pressing the go-around button; calling for flaps 13 and starting a climb. I missed ATC's call shortly thereafter to maintain 3;000 ft on the go-around. At approx 4;200 feet ATC asked if we needed any assistance and that we were told to maintain 3;000 ft. The aircraft reached an altitude of approximately 4;800 ft before returning to the assigned altitude of 3;000 ft. ATC then gave us a new clearance for vectors for the ILS runway xr. Once again the captain noted a 'NAVAID untuneable' message on the mcdu. However; on this approach the localizer captured and we were able to successfully shoot the ILS approach.this incident highlights the importance of verifying the localizer; as well as paying close attention to ATC go-around instructions; especially during IMC and/or unusual situations. In training in the simulator we are always in a position that we must climb during the go-around/missed approach ('positive rate'/'gear up'). Since I don't perform many actual go-arounds (this was my second in almost 6 yrs); in this instance I immediately reverted to 'training mentality' and started a climb. Lesson learned: during future go-arounds I will assess the situation to determine whether or not a climb is necessary.

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Original NASA ASRS Text

Title: A B717 crew executed a go-around after a MCDU NAVAID UNTUNEABLE alert and on the go-around were cleared to 3;000 FT but climbed to 4;800 FT. The second approach was successful after the LOC frequency was verified.

Narrative: We were given vectors to join localizer for Runway XX on a heading of 080. Once on assigned heading we were cleared for the ILS Runway XX. The Captain (pilot not flying); noting a 'NAVAID UNTUNEABLE' MSG in the scratch pad of the MCDU said; 'We're gonna have to go-around.' At that point the aircraft was at 3;000 FT; heading 080 degrees; at an airspeed of 180 KIAS with Flaps 18. The aircraft was bouncing around pretty good in moderate turbulence. I (pilot flying) initiated the go-around procedure by pressing the go-around button; calling for Flaps 13 and starting a climb. I missed ATC's call shortly thereafter to maintain 3;000 FT on the go-around. At approx 4;200 feet ATC asked if we needed any assistance and that we were told to maintain 3;000 FT. The aircraft reached an altitude of approximately 4;800 FT before returning to the assigned altitude of 3;000 FT. ATC then gave us a new clearance for vectors for the ILS Runway XR. Once again the Captain noted a 'NAVAID UNTUNEABLE' message on the MCDU. However; on this approach the localizer captured and we were able to successfully shoot the ILS approach.This incident highlights the importance of verifying the localizer; as well as paying close attention to ATC go-around instructions; especially during IMC and/or unusual situations. In training in the simulator we are always in a position that we must climb during the go-around/missed approach ('positive rate'/'gear up'). Since I don't perform many actual go-arounds (this was my second in almost 6 yrs); in this instance I immediately reverted to 'training mentality' and started a climb. Lesson learned: during future go-arounds I will assess the situation to determine whether or not a climb is necessary.

Data retrieved from NASA's ASRS site as of July 2013 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.