A B737-800 on approach at 1500 ft made go around; declared emergency due to trailing edge flaps stuc...

Attributes
ACN	724934
Time
Date	200701
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 3000
Environment
Weather Elements	Rain
Light	Night
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	724934
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : flap position indication other flight crewa other flight crewb
Resolutory Action	flight crew : executed go around flight crew : declared emergency flight crew : overcame equipment problem
Consequence	other other
Supplementary
Problem Areas	Aircraft Weather
Primary Problem	Aircraft

Narrative:

On ILS final approach in ZZZ WX was 600 ft overcast; 5 mi in light rain. Copilot was flying and had just started configuring for landing. With the flaps at 2; he called for gear down and flaps 15. At this point we noticed the flaps stuck at 2 with the handle at 15. We tried resetting the handle back to 2 and then to 15; but the flaps stayed at 2. We were at approximately 1500 ft at this point and I directed the copilot to go around. While we were going around and I was pulling out the checklist; I directed the copilot to declare an emergency based on the possibility of landing at flaps 2 on a wet runway. We ran the checklist and were able to get the flaps extended to 15 with alternate extension. From this point we landed without incident and taxied to the gate. Callback conversation with reporter revealed the following information: the first officer was flying and the trailing edge flaps stuck at 2. Had selected 15. Ordered go around and declared an emergency due to wet runway and possibility of landing at flaps 2. The alternate extension was performed and flaps extended to 15. Landed uneventfully. Maintenance has not released any information on the maintenance action taken or the failed component.

Original NASA ASRS Text

Title: A B737-800 ON APCH AT 1500 FT MADE GAR; DECLARED EMER DUE TO TRAILING EDGE FLAPS STUCK AT 2 UNITS WITH 15 UNITS SELECTED. FLAPS EXTENDED IN ALTERNATE MODE.

Narrative: ON ILS FINAL APCH IN ZZZ WX WAS 600 FT OVCST; 5 MI IN LIGHT RAIN. COPLT WAS FLYING AND HAD JUST STARTED CONFIGURING FOR LNDG. WITH THE FLAPS AT 2; HE CALLED FOR GEAR DOWN AND FLAPS 15. AT THIS POINT WE NOTICED THE FLAPS STUCK AT 2 WITH THE HANDLE AT 15. WE TRIED RESETTING THE HANDLE BACK TO 2 AND THEN TO 15; BUT THE FLAPS STAYED AT 2. WE WERE AT APPROX 1500 FT AT THIS POINT AND I DIRECTED THE COPLT TO GO AROUND. WHILE WE WERE GOING AROUND AND I WAS PULLING OUT THE CHKLIST; I DIRECTED THE COPLT TO DECLARE AN EMER BASED ON THE POSSIBILITY OF LNDG AT FLAPS 2 ON A WET RWY. WE RAN THE CHKLIST AND WERE ABLE TO GET THE FLAPS EXTENDED TO 15 WITH ALTERNATE EXTENSION. FROM THIS POINT WE LANDED WITHOUT INCIDENT AND TAXIED TO THE GATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE FO WAS FLYING AND THE TRAILING EDGE FLAPS STUCK AT 2. HAD SELECTED 15. ORDERED GAR AND DECLARED AN EMER DUE TO WET RWY AND POSSIBILITY OF LNDG AT FLAPS 2. THE ALTERNATE EXTENSION WAS PERFORMED AND FLAPS EXTENDED TO 15. LANDED UNEVENTFULLY. MAINT HAS NOT RELEASED ANY INFO ON THE MAINT ACTION TAKEN OR THE FAILED COMPONENT.

Data retrieved from NASA's ASRS site as of January 2009 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.

A B737-800 on approach at 1500 ft made go around; declared emergency due to trailing edge flaps stuck at 2 units with 15 units selected. Flaps extended in alternate mode.