Flight control problem when ailerons are literally frozen in neutral position in-flight.

Attributes
ACN	234092
Time
Date	199302
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iah
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude landing other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 3950 flight time type : 2000
ASRS Report	234092
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 270 flight time total : 8000 flight time type : 4000
ASRS Report	233577
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation other

Narrative:

Departed iah for btr. Passing through 3000 ft MSL noticed a vibration, slowed, first officer looked outside and noticed engine #2 cowling loose and vibrating in the wind. Returned to iah for landing. Safe landing and maintenance inspected aircraft. Supplemental information from acn 233577: outboard access door of #2 engine cowling came open during flight. Returned to iah and landed.

Original NASA ASRS Text

Title: FLT CTL PROB WHEN AILERONS ARE LITERALLY FROZEN IN NEUTRAL POS INFLT.

Narrative: DEPARTED IAH FOR BTR. PASSING THROUGH 3000 FT MSL NOTICED A VIBRATION, SLOWED, FO LOOKED OUTSIDE AND NOTICED ENG #2 COWLING LOOSE AND VIBRATING IN THE WIND. RETURNED TO IAH FOR LNDG. SAFE LNDG AND MAINT INSPECTED ACFT. SUPPLEMENTAL INFO FROM ACN 233577: OUTBOARD ACCESS DOOR OF #2 ENG COWLING CAME OPEN DURING FLT. RETURNED TO IAH AND LANDED.

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.