Flight crew failed to correctly set altimeters.

Attributes
ACN	429801
Time
Date	199902
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : c90.tracon
State Reference	IL
Altitude	msl single value : 7000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	429801
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
ASRS Report	429800
Events
Anomaly	altitude deviation : undershoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to original clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While descending into ord, new first officer was having difficulty in making crossing restr and during my intervention, I failed to switch altimeters over to local setting. The first officer still having difficulty the altimeters were never switched till ord approach asked our altitude as we leveled off 350 ft off assigned altitude. Nothing was mentioned by approach. We corrected immediately and no further events. Supplemental information from acn 429800: while descending into ord trying to make crossing restr late switch of altimeters to local qnh caused a descent below assigned altitude. Corrected immediately no conflict encountered. No comment by ord approach.

Original NASA ASRS Text

Title: FLC FAILED TO CORRECTLY SET ALTIMETERS.

Narrative: WHILE DSNDING INTO ORD, NEW FO WAS HAVING DIFFICULTY IN MAKING XING RESTR AND DURING MY INTERVENTION, I FAILED TO SWITCH ALTIMETERS OVER TO LCL SETTING. THE FO STILL HAVING DIFFICULTY THE ALTIMETERS WERE NEVER SWITCHED TILL ORD APCH ASKED OUR ALT AS WE LEVELED OFF 350 FT OFF ASSIGNED ALT. NOTHING WAS MENTIONED BY APCH. WE CORRECTED IMMEDIATELY AND NO FURTHER EVENTS. SUPPLEMENTAL INFO FROM ACN 429800: WHILE DSNDING INTO ORD TRYING TO MAKE XING RESTR LATE SWITCH OF ALTIMETERS TO LCL QNH CAUSED A DSCNT BELOW ASSIGNED ALT. CORRECTED IMMEDIATELY NO CONFLICT ENCOUNTERED. NO COMMENT BY ORD APCH.

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.