Air carrier flight crew and ARTCC radar controller note altimeter reading problem.

Attributes
ACN	464000
Time
Date	200002
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	msl bound lower : 29000 msl bound upper : 29500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : multi engine pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6400 flight time type : 600
ASRS Report	464000
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Cruising at FL290 ATC advised we were at FL295 and climbing. We were at FL291 and descending. I reported we would have altimeter looked at by maintenance.

Original NASA ASRS Text

Title: ACR FLC AND ARTCC RADAR CTLR NOTE ALTIMETER READING PROB.

Narrative: CRUISING AT FL290 ATC ADVISED WE WERE AT FL295 AND CLBING. WE WERE AT FL291 AND DSNDING. I RPTED WE WOULD HAVE ALTIMETER LOOKED AT BY MAINT.

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.