On descent flight crew overshot assigned altitude due to wrong altimeter setting.

Attributes
ACN	491560
Time
Date	200011
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : roc.vortac
State Reference	NY
Altitude	msl bound lower : 10500 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 140 flight time total : 16490 flight time type : 850
ASRS Report	491560
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 3600 flight time type : 150
ASRS Report	491559
Events
Anomaly	altitude deviation : overshoot non adherence : company policies non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Descending into roc, ZOB gave us a crossing restr to cross 30 NM south of roc at 11000 ft and maintain 11000 ft. We acknowledged the restr and altitude. Out of FL180, a descent checklist was completed and the altimeter setting of 29.54 as per roc ATIS was set into both captain's and first officer's pfd's as well as the standby altimeter. Then the captain was the PNF and had left the #1 radio to use the #2 radio to call in range to roc operations. When I came back up on the #1 radio, ZOB was alerting us of being below 11000 ft MSL. The captain's pfd read 10500 ft MSL at 29.54. The first officer's pfd read 11500 ft MSL with an incorrect altimeter setting of 30.54. I asked ZOB what the altimeter setting was. Center read back 29.54. I read back 29.54 and explained that 30.54 had somehow got set in. ZOB then informed us to maintain 10000 ft MSL and that he had cleared it with roc approach and to maintain 10000 ft and to contact roc approach.

Original NASA ASRS Text

Title: ON DSCNT FLC OVERSHOT ASSIGNED ALT DUE TO WRONG ALTIMETER SETTING.

Narrative: DSNDING INTO ROC, ZOB GAVE US A XING RESTR TO CROSS 30 NM S OF ROC AT 11000 FT AND MAINTAIN 11000 FT. WE ACKNOWLEDGED THE RESTR AND ALT. OUT OF FL180, A DSCNT CHKLIST WAS COMPLETED AND THE ALTIMETER SETTING OF 29.54 AS PER ROC ATIS WAS SET INTO BOTH CAPT'S AND FO'S PFD'S AS WELL AS THE STANDBY ALTIMETER. THEN THE CAPT WAS THE PNF AND HAD LEFT THE #1 RADIO TO USE THE #2 RADIO TO CALL IN RANGE TO ROC OPS. WHEN I CAME BACK UP ON THE #1 RADIO, ZOB WAS ALERTING US OF BEING BELOW 11000 FT MSL. THE CAPT'S PFD READ 10500 FT MSL AT 29.54. THE FO'S PFD READ 11500 FT MSL WITH AN INCORRECT ALTIMETER SETTING OF 30.54. I ASKED ZOB WHAT THE ALTIMETER SETTING WAS. CTR READ BACK 29.54. I READ BACK 29.54 AND EXPLAINED THAT 30.54 HAD SOMEHOW GOT SET IN. ZOB THEN INFORMED US TO MAINTAIN 10000 FT MSL AND THAT HE HAD CLRED IT WITH ROC APCH AND TO MAINTAIN 10000 FT AND TO CONTACT ROC 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.