EMB145 altitude deviation ord.

Attributes
ACN	443230
Time
Date	199907
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 6600 msl bound upper : 7000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 120 flight time total : 1490 flight time type : 110
ASRS Report	443230
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : returned to assigned altitude none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The problem of descending 400 ft below an assigned altitude was caused by the fact the PF was briefing the approach into O'hare while also flying the aircraft. This could have been avoided by xferring the controls to the PNF. As we descended through 7000 ft we noticed the continued descent and corrective action was taken to climb back to 7000 ft.

Original NASA ASRS Text

Title: EMB145 ALTDEV ORD.

Narrative: THE PROB OF DSNDING 400 FT BELOW AN ASSIGNED ALT WAS CAUSED BY THE FACT THE PF WAS BRIEFING THE APCH INTO O'HARE WHILE ALSO FLYING THE ACFT. THIS COULD HAVE BEEN AVOIDED BY XFERRING THE CTLS TO THE PNF. AS WE DSNDED THROUGH 7000 FT WE NOTICED THE CONTINUED DSCNT AND CORRECTIVE ACTION WAS TAKEN TO CLB BACK TO 7000 FT.

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.