An MD80 flight crew initiated a go around from an ILS approach when the localizer reacted anomalousl...

Attributes
ACN	945285
Time
Date	201104
Local Time Of Day	1801-2400
Place
Locale Reference	LIT.Airport
State Reference	AR
Environment
Light	Night
Aircraft 1
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Component
Aircraft Component	ILS/VOR
Person 1
Function	First Officer Pilot Flying
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

I was pilot flying; captain was pilot not flying during ILS approach to 22R at lit. Visibility reported from approach was 4;200 RVR at check in. Autopilot was engaged during approach. While on approach we were switched to tower. At approximately 1;500 ft AGL tower cleared another aircraft for takeoff on 22R. Left localizer deviation occurred at approximately 750 AGL then quickly re-centered. The autopilot did not correct very quickly so I disconnected the autopilot as the pilot not flying was calling for a go around. Go around was executed per procedure and we set up for another approach; which was executed to touchdown with no instrument deviations. We saw approach lights at minimums and the touchdown zone approximately 50 ft below that; indicating the actual RVR was likely far below 4;200 ft. We debriefed the tower via radio about the likely cause of our localizer deviation; which in our view was from the departing aircraft while we were inside the FAF.

Original NASA ASRS Text

Title: An MD80 flight crew initiated a go around from an ILS approach when the LOC reacted anomalously; perhaps due to an aircraft departing on their runway of intended landing and disrupting the signal.

Narrative: I was pilot flying; Captain was pilot not flying during ILS approach to 22R at LIT. Visibility reported from Approach was 4;200 RVR at check in. Autopilot was engaged during approach. While on approach we were switched to Tower. At approximately 1;500 FT AGL Tower cleared another aircraft for takeoff on 22R. Left LOC deviation occurred at approximately 750 AGL then quickly re-centered. The autopilot did not correct very quickly so I disconnected the autopilot as the pilot not flying was calling for a go around. Go around was executed per procedure and we set up for another approach; which was executed to touchdown with no instrument deviations. We saw approach lights at minimums and the touchdown zone approximately 50 FT below that; indicating the actual RVR was likely far below 4;200 FT. We debriefed the Tower via radio about the likely cause of our LOC deviation; which in our view was from the departing aircraft while we were inside the FAF.

Data retrieved from NASA's ASRS site as of April 2012 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.

An MD80 flight crew initiated a go around from an ILS approach when the localizer reacted anomalously; perhaps due to an aircraft departing on their runway of intended landing and disrupting the signal.