Flight crew experiences flap extension problem with hydraulic service valve in 'B' position.

Attributes
ACN	315775
Time
Date	199509
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : alb
State Reference	NY
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : alb
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 90 flight time total : 15100 flight time type : 1800
ASRS Report	315775
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	aircraft : equipment problem dissipated flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Flaps selected to 5 degrees. Left extended to 2 degrees, right to 5 degrees. Asymmetric protection shut down system. Read handbook, performed checklist. Flew in circles for 15 mins while calling company and doing checklist. Flaps would not extend further or retract. Checklist called for selecting flaps to lowest indicated position. Selected 2 degrees after above mentioned 15 mins, right flap retracted to 2 degrees. Attempted extension successfully, performed normal landing. Found hydraulic service valve in 'B' position, rather than off. Replaced flap gauge as precautionary.

Original NASA ASRS Text

Title: FLC EXPERIENCES FLAP EXTENSION PROB WITH HYD SVC VALVE IN 'B' POS.

Narrative: FLAPS SELECTED TO 5 DEGS. L EXTENDED TO 2 DEGS, R TO 5 DEGS. ASYMMETRIC PROTECTION SHUT DOWN SYS. READ HANDBOOK, PERFORMED CHKLIST. FLEW IN CIRCLES FOR 15 MINS WHILE CALLING COMPANY AND DOING CHKLIST. FLAPS WOULD NOT EXTEND FURTHER OR RETRACT. CHKLIST CALLED FOR SELECTING FLAPS TO LOWEST INDICATED POS. SELECTED 2 DEGS AFTER ABOVE MENTIONED 15 MINS, R FLAP RETRACTED TO 2 DEGS. ATTEMPTED EXTENSION SUCCESSFULLY, PERFORMED NORMAL LNDG. FOUND HYD SVC VALVE IN 'B' POS, RATHER THAN OFF. REPLACED FLAP GAUGE AS PRECAUTIONARY.

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.