Wrong altimeter setting on light transport creates an altitude deviation altitude undershot in climb. ARTCC radar controller alerts crew to this fact.

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Attributes
ACN	358010
Time
Date	199701
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ggt airport : roc
State Reference	NY
Altitude	msl bound lower : 20700 msl bound upper : 21000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 75 flight time total : 7000 flight time type : 3100
ASRS Report	358010
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : undershoot non adherence : clearance non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : became reoriented other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were climbing out of roc and the assigned altitude was FL210. During the climb we were discussing various things and we failed to reset the altimeter to 29.92. After we leveled off, the center asked us whether we were flying on 29.92. We acknowledged that we were not and corrected the altimeter setting. Because the distances we usually fly are fairly short, we don't get to fly a lot at flight levels. Because of this, it is easy to forget to reset the altimeter.

Original NASA ASRS Text

Title: WRONG ALTIMETER SETTING ON LTT CREATES AN ALTDEV ALT UNDERSHOT IN CLB. ARTCC RADAR CTLR ALERTS CREW TO THIS FACT.

Narrative: WE WERE CLBING OUT OF ROC AND THE ASSIGNED ALT WAS FL210. DURING THE CLB WE WERE DISCUSSING VARIOUS THINGS AND WE FAILED TO RESET THE ALTIMETER TO 29.92. AFTER WE LEVELED OFF, THE CTR ASKED US WHETHER WE WERE FLYING ON 29.92. WE ACKNOWLEDGED THAT WE WERE NOT AND CORRECTED THE ALTIMETER SETTING. BECAUSE THE DISTANCES WE USUALLY FLY ARE FAIRLY SHORT, WE DON'T GET TO FLY A LOT AT FLT LEVELS. BECAUSE OF THIS, IT IS EASY TO FORGET TO RESET THE ALTIMETER.

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.