Beech 200 flight crew suffer altitude deviation when altimeters are not set correctly.

Attributes
ACN	814048
Time
Date	200812
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl bound lower : 6000 msl bound upper : 6900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	Super King Air 200 HDC
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 70 flight time total : 2200 flight time type : 750
ASRS Report	814048
Person 2
Affiliation	government : faa
Function	controller : departure
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : far
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude flight crew : overcame equipment problem
Supplementary
Problem Areas	Flight Crew Human Performance Weather Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During the pre-taxi checks the co-captain (PF) called out the local altimeter setting and it was set on the right side. The PF missed setting the correct altimeter setting on the left side (the altimeter that the autoplt operates off of) despite having called it out and being observed setting the altimeter. After departure we were assigned a heading and given 6000 ft for the altitude. The autoplt was engaged and upon leveling off at 6000 ft we were advised by departure control that we were shown at 6900 ft. We immediately saw the cause of the improper altitude (the incorrect altimeter setting) and corrected the altimeter and altitude deviation. The flight was completed without further incident. Due to the exact discrepancy between the left and right altimeters; they were almost exactly 1000 ft different. This caused both pilots to miss the discrepancy prior to departure as the left altimeter looked to be at field elevation. In the future more care needs to be taken in setting and verifying correct altimeter settings.

Original NASA ASRS Text

Title: BEECH 200 FLT CREW SUFFER ALTITUDE DEVIATION WHEN ALTIMETERS ARE NOT SET CORRECTLY.

Narrative: DURING THE PRE-TAXI CHKS THE CO-CAPT (PF) CALLED OUT THE LCL ALTIMETER SETTING AND IT WAS SET ON THE R SIDE. THE PF MISSED SETTING THE CORRECT ALTIMETER SETTING ON THE L SIDE (THE ALTIMETER THAT THE AUTOPLT OPERATES OFF OF) DESPITE HAVING CALLED IT OUT AND BEING OBSERVED SETTING THE ALTIMETER. AFTER DEP WE WERE ASSIGNED A HDG AND GIVEN 6000 FT FOR THE ALT. THE AUTOPLT WAS ENGAGED AND UPON LEVELING OFF AT 6000 FT WE WERE ADVISED BY DEP CTL THAT WE WERE SHOWN AT 6900 FT. WE IMMEDIATELY SAW THE CAUSE OF THE IMPROPER ALT (THE INCORRECT ALTIMETER SETTING) AND CORRECTED THE ALTIMETER AND ALTDEV. THE FLT WAS COMPLETED WITHOUT FURTHER INCIDENT. DUE TO THE EXACT DISCREPANCY BTWN THE L AND R ALTIMETERS; THEY WERE ALMOST EXACTLY 1000 FT DIFFERENT. THIS CAUSED BOTH PLTS TO MISS THE DISCREPANCY PRIOR TO DEP AS THE L ALTIMETER LOOKED TO BE AT FIELD ELEVATION. IN THE FUTURE MORE CARE NEEDS TO BE TAKEN IN SETTING AND VERIFYING CORRECT ALTIMETER SETTINGS.

Data retrieved from NASA's ASRS site as of May 2009 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.