E145 crew had an unresponsive aircraft pitch trim system.

Attributes
ACN	497348
Time
Date	200101
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : clt.airport
State Reference	NC
Altitude	msl single value : 12000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : hornet 1
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 9500 flight time type : 300
ASRS Report	497348
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 40 flight time total : 1100 flight time type : 40
ASRS Report	497360
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On departure from clt on jan/xa/01, flight abcd, the first officer's pitch trim failed to respond to nose down pitch commands. The captain then attempted nose down commands from his yoke with no response. The appropriate checklists were called for. After using the back-up pitch trim control, the captain's and first officer's trim controls returned to normal function. The remainder of the flight was uneventful. The uncommanded pitch trim in-flight was written up in the aircraft logbook upon arrival at mgm.

Original NASA ASRS Text

Title: E145 CREW HAD AN UNRESPONSIVE ACFT PITCH TRIM SYS.

Narrative: ON DEP FROM CLT ON JAN/XA/01, FLT ABCD, THE FO'S PITCH TRIM FAILED TO RESPOND TO NOSE DOWN PITCH COMMANDS. THE CAPT THEN ATTEMPTED NOSE DOWN COMMANDS FROM HIS YOKE WITH NO RESPONSE. THE APPROPRIATE CHKLISTS WERE CALLED FOR. AFTER USING THE BACK-UP PITCH TRIM CTL, THE CAPT'S AND FO'S TRIM CTLS RETURNED TO NORMAL FUNCTION. THE REMAINDER OF THE FLT WAS UNEVENTFUL. THE UNCOMMANDED PITCH TRIM INFLT WAS WRITTEN UP IN THE ACFT LOGBOOK UPON ARR AT MGM.

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.