Lear 25 crew misses crossing altitude restr on STAR in ZDC airspace.

Attributes
ACN	404160
Time
Date	199806
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dqo airport : phl
State Reference	DE
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pen
Operator	common carrier : air taxi
Make Model Name	Learjet 35
Operating Under FAR Part	Part 135
Flight Phase	descent other
Route In Use	arrival star : star enroute airway : zdc
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 3000
ASRS Report	404160
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were told to cross stefe intersection at 12000 ft MSL. I looked at the chart and determined that stefe was 24 DME on the 053 degree radial of dqo. Then later the first officer looked at chart and said stefe was 37 DME on the 053 degree radial. I glanced at chart and agreed with him. Stefe and somto are very close together and it is a very busy chart and we somehow idented stefe to be where somto is. Center came on and questioned our rate of descent and we replied 2000 FPM. He then said we had passed the stefe intersection. I immediately applied spoilers and we descended rapidly and reached 12000 ft approximately 4 mi past stefe.

Original NASA ASRS Text

Title: LEAR 25 CREW MISSES XING ALT RESTR ON STAR IN ZDC AIRSPACE.

Narrative: WE WERE TOLD TO CROSS STEFE INTXN AT 12000 FT MSL. I LOOKED AT THE CHART AND DETERMINED THAT STEFE WAS 24 DME ON THE 053 DEG RADIAL OF DQO. THEN LATER THE FO LOOKED AT CHART AND SAID STEFE WAS 37 DME ON THE 053 DEG RADIAL. I GLANCED AT CHART AND AGREED WITH HIM. STEFE AND SOMTO ARE VERY CLOSE TOGETHER AND IT IS A VERY BUSY CHART AND WE SOMEHOW IDENTED STEFE TO BE WHERE SOMTO IS. CTR CAME ON AND QUESTIONED OUR RATE OF DSCNT AND WE REPLIED 2000 FPM. HE THEN SAID WE HAD PASSED THE STEFE INTXN. I IMMEDIATELY APPLIED SPOILERS AND WE DSNDED RAPIDLY AND REACHED 12000 FT APPROX 4 MI PAST STEFE.

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.