Flight crew of large transport departing ord missed the 8 mile 4000' restriction.

Attributes
ACN	149702
Time
Date	199006
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 3500 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 170 flight time total : 5000 flight time type : 530
ASRS Report	149702
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On climb out from ord runway 22L with an assigned heading of 180 degree and an assigned altitude of 5000', departure control asked us to increase our rate of climb, departure then stated we had missed the 4000'/8 DME crossing altitude of the O'hare eight departure (ord 8. Ord). We did not understand the 4000' restriction applied to our departure because it follows the narrative for aircraft departing on a 'heading from 330 clockwise through 060.' our assigned heading was 180 degree. The narrative would be clrer if the statement, 'all other aircraft cross chicago O'hare 8 DME at or above 4000', dropped the word 'other' and then the statement moved up to follow, 'all aircraft expect radar vectors to appropriate NAVAID/fix.'

Original NASA ASRS Text

Title: FLT CREW OF LGT DEPARTING ORD MISSED THE 8 MILE 4000' RESTRICTION.

Narrative: ON CLB OUT FROM ORD RWY 22L WITH AN ASSIGNED HDG OF 180 DEG AND AN ASSIGNED ALT OF 5000', DEP CTL ASKED US TO INCREASE OUR RATE OF CLB, DEP THEN STATED WE HAD MISSED THE 4000'/8 DME XING ALT OF THE O'HARE EIGHT DEP (ORD 8. ORD). WE DID NOT UNDERSTAND THE 4000' RESTRICTION APPLIED TO OUR DEP BECAUSE IT FOLLOWS THE NARRATIVE FOR ACFT DEPARTING ON A 'HDG FROM 330 CLOCKWISE THROUGH 060.' OUR ASSIGNED HDG WAS 180 DEG. THE NARRATIVE WOULD BE CLRER IF THE STATEMENT, 'ALL OTHER ACFT CROSS CHICAGO O'HARE 8 DME AT OR ABOVE 4000', DROPPED THE WORD 'OTHER' AND THEN THE STATEMENT MOVED UP TO FOLLOW, 'ALL ACFT EXPECT RADAR VECTORS TO APPROPRIATE NAVAID/FIX.'

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.