Flight crew of an MD80 overshot altitude on climb due to main altimeter system error.

Attributes
ACN	374389
Time
Date	199707
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 17000 msl bound upper : 17400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
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 airway : zfw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	374389
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	374390
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Approximately 350 ft disparity between captain and first officer altimeters at 17000 ft leveloff. DFGS audible sounded for altitude. Captain and first officer at 17030 ft indicated while standby altimeter indicated 17400 ft. ATC handed off to another frequency without comment. Do not know if a deviation registered in the control room.

Original NASA ASRS Text

Title: FLC OF AN MD80 OVERSHOT ALT ON CLB DUE TO MAIN ALTIMETER SYS ERROR.

Narrative: APPROX 350 FT DISPARITY BTWN CAPT AND FO ALTIMETERS AT 17000 FT LEVELOFF. DFGS AUDIBLE SOUNDED FOR ALT. CAPT AND FO AT 17030 FT INDICATED WHILE STANDBY ALTIMETER INDICATED 17400 FT. ATC HANDED OFF TO ANOTHER FREQ WITHOUT COMMENT. DO NOT KNOW IF A DEV REGISTERED IN THE CTL ROOM.

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.