CL65 first officer discovered a problem with the stick shaker wiring.

Attributes
ACN	479497
Time
Date	200007
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cvg.airport
State Reference	KY
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 240 flight time total : 2400 flight time type : 850
ASRS Report	479497
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : company policies non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Aircraft Company Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

I noticed that the stall/stick shaker motor, which is mounted on the back of the control column appeared to be missing a ground wire. I noticed this because the captain's motor had a ground wire but the first officer's did not. Maintenance was already on board dealing with another issue, so I queried the mechanic about the missing wire. He performed a normal stall test and explained to both the captain and I that the first officer's motor did not require a ground wire. Therefore, the discrepancy was never documented and the flight proceeded to the destination without incident. It was later that I discovered that the mechanic was incorrect. Both motors must have a ground wire otherwise the defective motor must be replaced. It's my belief that had we written the discrepancy in the log, the mechanic would have acted correctly by investigating the matter instead of 'guessing.' due to increased 'pushing' from company management, the captain was unwilling to document the apparent discrepancy.

Original NASA ASRS Text

Title: CL65 FO DISCOVERED A PROB WITH THE STICK SHAKER WIRING.

Narrative: I NOTICED THAT THE STALL/STICK SHAKER MOTOR, WHICH IS MOUNTED ON THE BACK OF THE CTL COLUMN APPEARED TO BE MISSING A GND WIRE. I NOTICED THIS BECAUSE THE CAPT'S MOTOR HAD A GND WIRE BUT THE FO'S DID NOT. MAINT WAS ALREADY ON BOARD DEALING WITH ANOTHER ISSUE, SO I QUERIED THE MECH ABOUT THE MISSING WIRE. HE PERFORMED A NORMAL STALL TEST AND EXPLAINED TO BOTH THE CAPT AND I THAT THE FO'S MOTOR DID NOT REQUIRE A GND WIRE. THEREFORE, THE DISCREPANCY WAS NEVER DOCUMENTED AND THE FLT PROCEEDED TO THE DEST WITHOUT INCIDENT. IT WAS LATER THAT I DISCOVERED THAT THE MECH WAS INCORRECT. BOTH MOTORS MUST HAVE A GND WIRE OTHERWISE THE DEFECTIVE MOTOR MUST BE REPLACED. IT'S MY BELIEF THAT HAD WE WRITTEN THE DISCREPANCY IN THE LOG, THE MECH WOULD HAVE ACTED CORRECTLY BY INVESTIGATING THE MATTER INSTEAD OF 'GUESSING.' DUE TO INCREASED 'PUSHING' FROM COMPANY MGMNT, THE CAPT WAS UNWILLING TO DOCUMENT THE APPARENT DISCREPANCY.

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.