Altitude deviation overshoot on descent.

Attributes
ACN	114373
Time
Date	198906
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : yyz
State Reference	ON
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : czyz tower : pwm
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival : profile descent arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 500
ASRS Report	114373
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 163 flight time total : 19200 flight time type : 918
ASRS Report	114652
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : clearance
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flight xx cle to yyz, began brany four arrival and then cleared for a profile descent runway 24L and right. Reviewed procedures and set commercial charts to my right side on flight bag. Crossed brany at 13,000', next fix 25 DME from yyz at 11,000 250 KTS. Having my approach plates opened I misread the toronto profile for runway 33, which is 25 DME at 10,000 and 250 KTS. Controller asked our altitude and we read back 10,000. He advised us that we should be at 11,000. Captain also misread profile for runway 33.

Original NASA ASRS Text

Title: ALT DEVIATION OVERSHOOT ON DESCENT.

Narrative: FLT XX CLE TO YYZ, BEGAN BRANY FOUR ARR AND THEN CLRED FOR A PROFILE DSCNT RWY 24L AND R. REVIEWED PROCS AND SET COMMERCIAL CHARTS TO MY RIGHT SIDE ON FLT BAG. CROSSED BRANY AT 13,000', NEXT FIX 25 DME FROM YYZ AT 11,000 250 KTS. HAVING MY APCH PLATES OPENED I MISREAD THE TORONTO PROFILE FOR RWY 33, WHICH IS 25 DME AT 10,000 AND 250 KTS. CTLR ASKED OUR ALT AND WE READ BACK 10,000. HE ADVISED US THAT WE SHOULD BE AT 11,000. CAPT ALSO MISREAD PROFILE FOR RWY 33.

Data retrieved from NASA's ASRS site as of August 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.