Altitude deviation altitude overshot during climb procedure. Altimeter reading discrepancy.

Attributes
ACN	346201
Time
Date	199609
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 10150 msl bound upper : 10150
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	346201
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	346200
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	flight crew : became reoriented flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Location: wbound direct millsap VOR off dfw. Leveling in perf mode aircraft showed perf cruise and leveled off at 10150 ft, while the center altimeter showed 10350 ft. Center altimeter showed 250-275 ft discrepancy throughout the entire flight. At that time departure called and said we were through 10000 ft and to turn to 300 degrees. At that time the first officer flying disconnected the autoplt and descended to 10000 ft on the center altimeter. Shortly thereafter we were assigned 17000 ft. No further problems were encountered. Maintenance found the center altimeter out of limits and replaced it.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT DURING CLB PROC. ALTIMETER READING DISCREPANCY.

Narrative: LOCATION: WBOUND DIRECT MILLSAP VOR OFF DFW. LEVELING IN PERF MODE ACFT SHOWED PERF CRUISE AND LEVELED OFF AT 10150 FT, WHILE THE CTR ALTIMETER SHOWED 10350 FT. CTR ALTIMETER SHOWED 250-275 FT DISCREPANCY THROUGHOUT THE ENTIRE FLT. AT THAT TIME DEP CALLED AND SAID WE WERE THROUGH 10000 FT AND TO TURN TO 300 DEGS. AT THAT TIME THE FO FLYING DISCONNECTED THE AUTOPLT AND DSNDED TO 10000 FT ON THE CTR ALTIMETER. SHORTLY THEREAFTER WE WERE ASSIGNED 17000 FT. NO FURTHER PROBS WERE ENCOUNTERED. MAINT FOUND THE CTR ALTIMETER OUT OF LIMITS AND REPLACED IT.

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.