Air carrier medium large transport experiences flap indication problem on approach to las.

Attributes
ACN	148070
Time
Date	199006
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : las
State Reference	NV
Altitude	msl bound lower : 1000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : las tracon : oak
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 9000 flight time type : 3000
ASRS Report	148070
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On visibility approach into las runway 25, above 1000' AGL, first officer noticed the flap gauge was stuck in the up position with slight needle split. Flap handle in 15 degree position, gear down. Action taken: level off and accelerated to 0 degree flap maneuvering speed (approximately 185 KTS). Gentle climb on go around to 7000'. First officer made visibility inspection and estimated flap os to be 15 degrees. At 185 KTS aircraft buffeted as if flaps were down past 5 degrees. Also leading edge flap indicator on overhead indicated that leading edge devices were fully extended. Gear was left extended on go around for stability nd to reduce chance of compounding any hydraulic problems. Completed asymmetric flap checklist at 7000' MSL. During visibility inspection left flap needle went to 5 degrees and right stayed at 0 degrees. Flight characteristics remained stable with no asymmetry noted. Reduced speed to flap 15 degrees maneuvering and made shallow turns at 7000' MSL. Characteristics normal and buffeting ceased. Made normal 15 degree flap visibility approach and landing west/O incident. No emergency declared! Mechanic pulled and rest flap indicator circuit breaker and flap indicated 15 degrees. Flap had been left in 15 degree position for inspection.

Original NASA ASRS Text

Title: ACR MLG EXPERIENCES FLAP INDICATION PROBLEM ON APCH TO LAS.

Narrative: ON VIS APCH INTO LAS RWY 25, ABOVE 1000' AGL, F/O NOTICED THE FLAP GAUGE WAS STUCK IN THE UP POS WITH SLIGHT NEEDLE SPLIT. FLAP HANDLE IN 15 DEG POS, GEAR DOWN. ACTION TAKEN: LEVEL OFF AND ACCELERATED TO 0 DEG FLAP MANEUVERING SPD (APPROX 185 KTS). GENTLE CLB ON GAR TO 7000'. F/O MADE VIS INSPECTION AND ESTIMATED FLAP OS TO BE 15 DEGS. AT 185 KTS ACFT BUFFETED AS IF FLAPS WERE DOWN PAST 5 DEGS. ALSO LEADING EDGE FLAP INDICATOR ON OVERHEAD INDICATED THAT LEADING EDGE DEVICES WERE FULLY EXTENDED. GEAR WAS LEFT EXTENDED ON GAR FOR STABILITY ND TO REDUCE CHANCE OF COMPOUNDING ANY HYD PROBS. COMPLETED ASYMMETRIC FLAP CHKLIST AT 7000' MSL. DURING VIS INSPECTION LEFT FLAP NEEDLE WENT TO 5 DEGS AND RIGHT STAYED AT 0 DEGS. FLT CHARACTERISTICS REMAINED STABLE WITH NO ASYMMETRY NOTED. REDUCED SPD TO FLAP 15 DEGS MANEUVERING AND MADE SHALLOW TURNS AT 7000' MSL. CHARACTERISTICS NORMAL AND BUFFETING CEASED. MADE NORMAL 15 DEG FLAP VIS APCH AND LNDG W/O INCIDENT. NO EMER DECLARED! MECH PULLED AND REST FLAP INDICATOR CB AND FLAP INDICATED 15 DEGS. FLAP HAD BEEN LEFT IN 15 DEG POS FOR INSPECTION.

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.