Aircraft equipment problem, severe.

Attributes
ACN	96607
Time
Date	198810
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : tol
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 1500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 1300
ASRS Report	96607
Person 2
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 14000
ASRS Report	96783
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On takeoff and immediately upon rotation, stick shaker activated simultaneously with illumination of stall warning, stall identify, followed by the aileron/elevator disconnect lights. We quickly determined that the aircraft was maintaining the proper climb profile and was fully ctlable. We decided to remain below the overcast, and requested a return to the airport. After performing the appropriate checklists, the stick shaker was disabled, and we performed a normal approach and landing without further difficulty. Callback conversation with reporter revealed the following: reporter states never did really determine what was wrong. Maintenance spent all night checking. Finally pulled all black boxes related to the systems involved and replaced them. NTSB representative present because tower incorrectly reported aileron flutter. Switch to SOP stall warning is stick shaker release. Aileron disconnect actually allows cable to stretch so pilot gets proper feel. Reporter feels disconnect occurred because of excess vibration of airframe. Otherwise airplane flew well. Flight attendant's knew something was wrong because of vibration and remained seated.

Original NASA ASRS Text

Title: ACFT EQUIPMENT PROBLEM, SEVERE.

Narrative: ON TAKEOFF AND IMMEDIATELY UPON ROTATION, STICK SHAKER ACTIVATED SIMULTANEOUSLY WITH ILLUMINATION OF STALL WARNING, STALL IDENT, FOLLOWED BY THE AILERON/ELEVATOR DISCONNECT LIGHTS. WE QUICKLY DETERMINED THAT THE ACFT WAS MAINTAINING THE PROPER CLIMB PROFILE AND WAS FULLY CTLABLE. WE DECIDED TO REMAIN BELOW THE OVERCAST, AND REQUESTED A RETURN TO THE AIRPORT. AFTER PERFORMING THE APPROPRIATE CHECKLISTS, THE STICK SHAKER WAS DISABLED, AND WE PERFORMED A NORMAL APPROACH AND LANDING WITHOUT FURTHER DIFFICULTY. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: RPTR STATES NEVER DID REALLY DETERMINE WHAT WAS WRONG. MAINT SPENT ALL NIGHT CHECKING. FINALLY PULLED ALL BLACK BOXES RELATED TO THE SYSTEMS INVOLVED AND REPLACED THEM. NTSB REPRESENTATIVE PRESENT BECAUSE TWR INCORRECTLY REPORTED AILERON FLUTTER. SWITCH TO SOP STALL WARNING IS STICK SHAKER RELEASE. AILERON DISCONNECT ACTUALLY ALLOWS CABLE TO STRETCH SO PLT GETS PROPER FEEL. RPTR FEELS DISCONNECT OCCURRED BECAUSE OF EXCESS VIBRATION OF AIRFRAME. OTHERWISE AIRPLANE FLEW WELL. FA'S KNEW SOMETHING WAS WRONG BECAUSE OF VIBRATION AND REMAINED SEATED.

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.