Large transport unable to comply with SID climb restriction.

Attributes
ACN	138272
Time
Date	199002
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 3700 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Dawn
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 : noise abatement departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp
Experience	flight time last 90 days : 105 flight time total : 18100 flight time type : 2700
ASRS Report	138272
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance non adherence : published procedure
Independent Detector	other controllera other flight crewa
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:

On departure runway 22L using our company noise abatement/quiet EPR/standard departure we were unable to attain a climb gradient that would comply with the 4000' by 8 DME departure restriction. Although I was aware of the restriction, I was distracted by heavy radio traffic and my personal attempt to make the departure as quiet as possible due to the early morning hour. I believe this departure to be climb gradient attainable at ord from all runways at ord except for 22L, its des end being more than 2 1/2 mi from the VOR. I was in the process of advising ATC when we were cleared to expedite through 4000' (we were at 3700' at the time--at this point back to normal climb power).I have informed my company of this problem so they may make note on the departure page of our manual not to make quiet EPR departures on runway 22L west/O informing ATC.

Original NASA ASRS Text

Title: LGT UNABLE TO COMPLY WITH SID CLIMB RESTRICTION.

Narrative: ON DEP RWY 22L USING OUR COMPANY NOISE ABATEMENT/QUIET EPR/STANDARD DEP WE WERE UNABLE TO ATTAIN A CLB GRADIENT THAT WOULD COMPLY WITH THE 4000' BY 8 DME DEP RESTRICTION. ALTHOUGH I WAS AWARE OF THE RESTRICTION, I WAS DISTRACTED BY HEAVY RADIO TFC AND MY PERSONAL ATTEMPT TO MAKE THE DEP AS QUIET AS POSSIBLE DUE TO THE EARLY MORNING HR. I BELIEVE THIS DEP TO BE CLB GRADIENT ATTAINABLE AT ORD FROM ALL RWYS AT ORD EXCEPT FOR 22L, ITS DES END BEING MORE THAN 2 1/2 MI FROM THE VOR. I WAS IN THE PROCESS OF ADVISING ATC WHEN WE WERE CLRED TO EXPEDITE THROUGH 4000' (WE WERE AT 3700' AT THE TIME--AT THIS POINT BACK TO NORMAL CLB PWR).I HAVE INFORMED MY COMPANY OF THIS PROB SO THEY MAY MAKE NOTE ON THE DEP PAGE OF OUR MANUAL NOT TO MAKE QUIET EPR DEPS ON RWY 22L W/O INFORMING ATC.

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.