B757 captain reports apparent split flaps during approach during approach with no EICAS messages. Cr...

Narrative:

Flaps selected from 5 to 15. Left needle stayed at 5 and the right needle went to 15 as selected. Asked for and got vectors to figure out problem. No te asym or le lights. No other indications of problem. No control problems. Nothing in the QRH that really applies to this problem. Elected to operate flaps normally. No problems at 20; 25 or 30 flaps. Declared an emergency as a precaution and although inconvenient for ATC; landed on longest runway. Did not want to be making turns low to ground on runway in case something else went wrong with flaps. First officer landed normally. Entered in maintenance log. Maintenance met aircraft and confirmed indicator malfunction.

Original NASA ASRS Text

Title: B757 Captain reports apparent split flaps during approach during approach with no EICAS messages. Crew determined indicator failure and continues to landing after declaring an emergency.

Narrative: Flaps selected from 5 to 15. Left needle stayed at 5 and the right needle went to 15 as selected. Asked for and got vectors to figure out problem. No TE ASYM or LE lights. No other indications of problem. No control problems. Nothing in the QRH that really applies to this problem. Elected to operate flaps normally. No problems at 20; 25 or 30 flaps. Declared an emergency as a precaution and although inconvenient for ATC; landed on longest runway. Did not want to be making turns low to ground on Runway in case something else went wrong with flaps. First Officer landed normally. Entered in maintenance log. Maintenance met aircraft and confirmed indicator malfunction.

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.

Attributes
ACN	843115
Time
Date	200907
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Flap/Slat Indication
Person 1
Function	Captain Pilot Not Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe

B757 captain reports apparent split flaps during approach during approach with no EICAS messages. Crew determined indicator failure and continues to landing after declaring an emergency.