Aircraft equipment problem of controls mandates a return land.

Attributes
ACN	210439
Time
Date	199205
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 19000
ASRS Report	210439
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After takeoff from runway 22L we were given an initial turn to 080 degrees. During the rollout, the first officer's ailerons went into the electric standby control mode of operation. The breakaway pin in his yoke broke off as if the ailerons had jammed. The first officer was able to control the aircraft with some restrictive forces to an uneventful landing on runway 22R at ord. An emergency was declared with ord ATC and the equipment (crash fire rescue) was called out. This particular aircraft had 2 previous write-ups on the scs. Both write-ups had been cleared.

Original NASA ASRS Text

Title: ACFT EQUIP PROBLEM OF CTLS MANDATES A RETURN LAND.

Narrative: AFTER TKOF FROM RWY 22L WE WERE GIVEN AN INITIAL TURN TO 080 DEGS. DURING THE ROLLOUT, THE FO'S AILERONS WENT INTO THE ELECTRIC STANDBY CTL MODE OF OP. THE BREAKAWAY PIN IN HIS YOKE BROKE OFF AS IF THE AILERONS HAD JAMMED. THE FO WAS ABLE TO CTL THE ACFT WITH SOME RESTRICTIVE FORCES TO AN UNEVENTFUL LNDG ON RWY 22R AT ORD. AN EMER WAS DECLARED WITH ORD ATC AND THE EQUIP (CRASH FIRE RESCUE) WAS CALLED OUT. THIS PARTICULAR ACFT HAD 2 PREVIOUS WRITE-UPS ON THE SCS. BOTH WRITE-UPS HAD BEEN CLRED.

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.