Wrong altimeter setting results in an altitude deviation, an altitude overshoot near 7a4, il.

Attributes
ACN	509840
Time
Date	200104
Day	Sun
Local Time Of Day	0601 To 1200
Place
State Reference	IL
Altitude	msl single value : 5000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 310/T310C
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : multi engine pilot : cfi
Experience	flight time last 90 days : 35 flight time total : 1735 flight time type : 200
ASRS Report	509840
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : published procedure other anomaly other
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude flight crew : overcame equipment problem
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Departed on instrument clearance from 7a4 with no local altimeter setting available. On climb, cleared to 5000 ft by center controller, no current altimeter setting was given. On leveling at 5000 ft, controller indicated mode C altitude readout of 5500 ft momentarily, then lower. We requested current altimeter and noted that using field elevation to set initial altimeter on ground had resulted in 300 ft error in altitude. This situation would have been avoided had we obtained local altimeter setting from nearby field during our initial WX briefing or had we requested the local altimeter setting from the center controller on initial contact. Contributing to this error was the fact that we do not typically file IFR out of uncontrolled fields.

Original NASA ASRS Text

Title: WRONG ALTIMETER SETTING RESULTS IN AN ALTDEV, AN ALT OVERSHOOT NEAR 7A4, IL.

Narrative: DEPARTED ON INST CLRNC FROM 7A4 WITH NO LCL ALTIMETER SETTING AVAILABLE. ON CLB, CLRED TO 5000 FT BY CTR CTLR, NO CURRENT ALTIMETER SETTING WAS GIVEN. ON LEVELING AT 5000 FT, CTLR INDICATED MODE C ALT READOUT OF 5500 FT MOMENTARILY, THEN LOWER. WE REQUESTED CURRENT ALTIMETER AND NOTED THAT USING FIELD ELEVATION TO SET INITIAL ALTIMETER ON GND HAD RESULTED IN 300 FT ERROR IN ALT. THIS SIT WOULD HAVE BEEN AVOIDED HAD WE OBTAINED LCL ALTIMETER SETTING FROM NEARBY FIELD DURING OUR INITIAL WX BRIEFING OR HAD WE REQUESTED THE LCL ALTIMETER SETTING FROM THE CTR CTLR ON INITIAL CONTACT. CONTRIBUTING TO THIS ERROR WAS THE FACT THAT WE DO NOT TYPICALLY FILE IFR OUT OF UNCTLED FIELDS.

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.