Unable to retract wing flaps. When they were selected to up, they went down further.

Attributes
ACN	105192
Time
Date	198902
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	msl bound lower : 500 msl bound upper : 500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : initial climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 225 flight time total : 3600 flight time type : 1450
ASRS Report	105192
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After takeoff I (captain) called for flaps to be brought from 10 to 0 degrees. Subsequently the flaps went to 20 degrees. The gear horn was blaring. It took the copilot about 2 mins to find the circuit breaker to cancel the horn. I requested priority handling into ewr with no incident. I think if the circuit breaker were a different color or something the situation would have been easier and more safe. Callback conversation with reporter revealed the following: when flaps were retracted from 10 degrees to 0, they instead went down further to 20 degrees. Fortunately, they did not go all the way to 50 degrees. His first officer could not find the gear warning horn circuit breaker and the horn was very disconcerting. Reporter later checked with maintenance and the cause of the problem was an internal leak in the flap selector valve. If this is a chronic problem with this airplane, he is unaware of it.

Original NASA ASRS Text

Title: UNABLE TO RETRACT WING FLAPS. WHEN THEY WERE SELECTED TO UP, THEY WENT DOWN FURTHER.

Narrative: AFTER TKOF I (CAPT) CALLED FOR FLAPS TO BE BROUGHT FROM 10 TO 0 DEGS. SUBSEQUENTLY THE FLAPS WENT TO 20 DEGS. THE GEAR HORN WAS BLARING. IT TOOK THE COPLT ABOUT 2 MINS TO FIND THE CB TO CANCEL THE HORN. I REQUESTED PRIORITY HANDLING INTO EWR WITH NO INCIDENT. I THINK IF THE CB WERE A DIFFERENT COLOR OR SOMETHING THE SITUATION WOULD HAVE BEEN EASIER AND MORE SAFE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: WHEN FLAPS WERE RETRACTED FROM 10 DEGS TO 0, THEY INSTEAD WENT DOWN FURTHER TO 20 DEGS. FORTUNATELY, THEY DID NOT GO ALL THE WAY TO 50 DEGS. HIS F/O COULD NOT FIND THE GEAR WARNING HORN CIRCUIT BREAKER AND THE HORN WAS VERY DISCONCERTING. RPTR LATER CHKED WITH MAINT AND THE CAUSE OF THE PROB WAS AN INTERNAL LEAK IN THE FLAP SELECTOR VALVE. IF THIS IS A CHRONIC PROB WITH THIS AIRPLANE, HE IS UNAWARE OF IT.

Data retrieved from NASA's ASRS site as of August 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.