<< >> NASA ASRS Report 382750, October 1997

An medium large transport descending into dtw, mi, misses his crossing altitude as the flight crew is busy performing other duties.

Attributes
ACN	382750
Time
Date	199710
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : dxo
State Reference	MI
Altitude	msl bound lower : 12000 msl bound upper : 16000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 65 flight time total : 9000 flight time type : 1900
ASRS Report	382750
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On descent into dtw, we were kept high for traffic going into ord. Shortly after returning to center frequency, I had been off talking to the passenger, getting ATIS, and preparing to do the descent checklist, we were given a crossing restr of 12000 ft and 250 KTS at mizar intersection. After accepting the clearance, I realized that we were not going to be able to make the restr. The center frequency was very busy and I was unable to get through to the controller to communicate the problem. Center passed us over to dtw approach. On initial contact I notified the controller that we would not be able to meet the restr. The controller did not seem to be too concerned and he did not issue us a new clearance. We did our best, but did not meet the restr. I don't believe that we caused any problems. However, it would be helpful if controllers would realize the situation that they put us in by giving us restr, they know we can't make.

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Original NASA ASRS Text

Title: AN MLG DSNDING INTO DTW, MI, MISSES HIS XING ALT AS THE FLC IS BUSY PERFORMING OTHER DUTIES.

Narrative: ON DSCNT INTO DTW, WE WERE KEPT HIGH FOR TFC GOING INTO ORD. SHORTLY AFTER RETURNING TO CTR FREQ, I HAD BEEN OFF TALKING TO THE PAX, GETTING ATIS, AND PREPARING TO DO THE DSCNT CHKLIST, WE WERE GIVEN A XING RESTR OF 12000 FT AND 250 KTS AT MIZAR INTXN. AFTER ACCEPTING THE CLRNC, I REALIZED THAT WE WERE NOT GOING TO BE ABLE TO MAKE THE RESTR. THE CTR FREQ WAS VERY BUSY AND I WAS UNABLE TO GET THROUGH TO THE CTLR TO COMMUNICATE THE PROB. CTR PASSED US OVER TO DTW APCH. ON INITIAL CONTACT I NOTIFIED THE CTLR THAT WE WOULD NOT BE ABLE TO MEET THE RESTR. THE CTLR DID NOT SEEM TO BE TOO CONCERNED AND HE DID NOT ISSUE US A NEW CLRNC. WE DID OUR BEST, BUT DID NOT MEET THE RESTR. I DON'T BELIEVE THAT WE CAUSED ANY PROBS. HOWEVER, IT WOULD BE HELPFUL IF CTLRS WOULD REALIZE THE SIT THAT THEY PUT US IN BY GIVING US RESTR, THEY KNOW WE CAN'T MAKE.

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.