Pilot of an small transport turboprop overshot climb altitude due to the wrong altimeter setting.

Attributes
ACN	306277
Time
Date	199505
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : emp
State Reference	KS
Altitude	msl bound lower : 17000 msl bound upper : 17900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dsm
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : zkc
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 85 flight time total : 7600 flight time type : 152
ASRS Report	306277
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	faa : investigated faa : reviewed incident with flight crew
Miss Distance	horizontal : 17950 vertical : 600
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ZKC assigned me FL190. When passing through 16500 ft center asked me to stop at 17000 ft. I leveled off at 17000 ft and confirmed level. Center said my mode C indicated 17900 ft. I was giving an altimeter setting of 29.93, my altimeter setting was set at 28.93. I immediately descended to 17000 ft. There was confusion between center, the other aircraft and myself about what aircraft was being called and assigned what altitude. The next controller asked me to call center when I landed. When I called, I was told that there would be a pilot deviation filed because aircraft clearance was 600 ft vertical and 2.96 mi horizontal. 2 contributing factors were fatigue and equipment. I had flown from nassau, bahamas to miami, fl, back to nassau to wichita, ks, in another aircraft that day. On the collins altimeter it is hard to set the barometric pressure setting. The knob is very sensitive, the last 2 numbers FLIP over after you stop turning the knob. I guess I was concentrating so much on getting the last 2 numbers right I failed to consider a large pressure change from the last time aircraft was flown. Corrective action is to be more aware of my physical limitations and taking more time and concentrating better on what I'm doing.

Original NASA ASRS Text

Title: PLT OF AN SMT TURBOPROP OVERSHOT CLB ALT DUE TO THE WRONG ALTIMETER SETTING.

Narrative: ZKC ASSIGNED ME FL190. WHEN PASSING THROUGH 16500 FT CTR ASKED ME TO STOP AT 17000 FT. I LEVELED OFF AT 17000 FT AND CONFIRMED LEVEL. CTR SAID MY MODE C INDICATED 17900 FT. I WAS GIVING AN ALTIMETER SETTING OF 29.93, MY ALTIMETER SETTING WAS SET AT 28.93. I IMMEDIATELY DSNDED TO 17000 FT. THERE WAS CONFUSION BTWN CTR, THE OTHER ACFT AND MYSELF ABOUT WHAT ACFT WAS BEING CALLED AND ASSIGNED WHAT ALT. THE NEXT CTLR ASKED ME TO CALL CTR WHEN I LANDED. WHEN I CALLED, I WAS TOLD THAT THERE WOULD BE A PLTDEV FILED BECAUSE ACFT CLRNC WAS 600 FT VERT AND 2.96 MI HORIZ. 2 CONTRIBUTING FACTORS WERE FATIGUE AND EQUIP. I HAD FLOWN FROM NASSAU, BAHAMAS TO MIAMI, FL, BACK TO NASSAU TO WICHITA, KS, IN ANOTHER ACFT THAT DAY. ON THE COLLINS ALTIMETER IT IS HARD TO SET THE BAROMETRIC PRESSURE SETTING. THE KNOB IS VERY SENSITIVE, THE LAST 2 NUMBERS FLIP OVER AFTER YOU STOP TURNING THE KNOB. I GUESS I WAS CONCENTRATING SO MUCH ON GETTING THE LAST 2 NUMBERS RIGHT I FAILED TO CONSIDER A LARGE PRESSURE CHANGE FROM THE LAST TIME ACFT WAS FLOWN. CORRECTIVE ACTION IS TO BE MORE AWARE OF MY PHYSICAL LIMITATIONS AND TAKING MORE TIME AND CONCENTRATING BETTER ON WHAT I'M DOING.

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.