On final approach a B757 executed a go around due to a flap disagreement indication at bda.

Attributes
ACN	405900
Time
Date	199806
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bda
State Reference	FO
Altitude	msl bound lower : 1000 msl bound upper : 1500
Aircraft 1
Controlling Facilities	tower : bda
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	405900
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other other
Consequence	Other Other
Supplementary
Primary Problem	Aircraft

Narrative:

XA30Z, 1000 ft, bda tower, ILS runway 30 bda. On short final to bda, at about 1500 ft and selecting flaps 25 degrees from 20 degrees, EICAS displayed 'trailing edge flaps disagree.' flaps indicated 20 degrees. At about 1000 ft, a go around was initiated with concurrence of tower. On downwind, the trailing edge flap disagree checklist was accomplished and an emergency was declared. Reference 20 speed was 140 KTS and winds were 270 degrees at 14 KTS. Landing was in touchdown zone with autobrakes at 4. Taxi speed attained 1/2 way down runway. Emergency vehicles were released and we taxied to gate uneventfully.

Original NASA ASRS Text

Title: ON FINAL APCH A B757 EXECUTED A GAR DUE TO A FLAP DISAGREEMENT INDICATION AT BDA.

Narrative: XA30Z, 1000 FT, BDA TWR, ILS RWY 30 BDA. ON SHORT FINAL TO BDA, AT ABOUT 1500 FT AND SELECTING FLAPS 25 DEGS FROM 20 DEGS, EICAS DISPLAYED 'TRAILING EDGE FLAPS DISAGREE.' FLAPS INDICATED 20 DEGS. AT ABOUT 1000 FT, A GAR WAS INITIATED WITH CONCURRENCE OF TWR. ON DOWNWIND, THE TRAILING EDGE FLAP DISAGREE CHKLIST WAS ACCOMPLISHED AND AN EMER WAS DECLARED. REF 20 SPD WAS 140 KTS AND WINDS WERE 270 DEGS AT 14 KTS. LNDG WAS IN TOUCHDOWN ZONE WITH AUTOBRAKES AT 4. TAXI SPD ATTAINED 1/2 WAY DOWN RWY. EMER VEHICLES WERE RELEASED AND WE TAXIED TO GATE UNEVENTFULLY.

Data retrieved from NASA's ASRS site as of July 2007 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.