Large transport crossing restr not met over bdf.

Attributes
ACN	447330
Time
Date	199908
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bdf.airport
State Reference	IL
Altitude	msl bound lower : 24000 msl bound upper : 25000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	descent : intermediate altitude descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 13000 flight time type : 610
ASRS Report	447330
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance non adherence : far
Independent Detector	aircraft equipment : altitude alert other flight crewa
Resolutory Action	controller : issued new clearance none taken : insufficient time
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Descent from FL330 to FL270 with instructions to cross bdf VOR at FL240. Clearance was pilot's discretion out of FL270. This was the 4TH leg of the day, the 7TH flight hour and the 10TH hour of duty time. Descended aircraft to FL270, leveled off with intention of continuing descent to FL240 approximately 12 mi from bdf VOR. Leveloff at FL270 was about 40 NM from bdf. Copilot and I noticed we had not started down at about 6 NM from bdf. Autoplt was on. I initiated descent immediately to FL240. Crossed bdf VOR at FL250 descending. ATC issued clearance at bdf to continue descent to 11000 ft. Flight continued uneventful. I am not sure what caused the distraction and late descent. Normal preparation for approach duties and conversation. Lesson learned: sooner is better than later. Now is better than never.

Original NASA ASRS Text

Title: LGT XING RESTR NOT MET OVER BDF.

Narrative: DSCNT FROM FL330 TO FL270 WITH INSTRUCTIONS TO CROSS BDF VOR AT FL240. CLRNC WAS PLT'S DISCRETION OUT OF FL270. THIS WAS THE 4TH LEG OF THE DAY, THE 7TH FLT HR AND THE 10TH HR OF DUTY TIME. DSNDED ACFT TO FL270, LEVELED OFF WITH INTENTION OF CONTINUING DSCNT TO FL240 APPROX 12 MI FROM BDF VOR. LEVELOFF AT FL270 WAS ABOUT 40 NM FROM BDF. COPLT AND I NOTICED WE HAD NOT STARTED DOWN AT ABOUT 6 NM FROM BDF. AUTOPLT WAS ON. I INITIATED DSCNT IMMEDIATELY TO FL240. CROSSED BDF VOR AT FL250 DSNDING. ATC ISSUED CLRNC AT BDF TO CONTINUE DSCNT TO 11000 FT. FLT CONTINUED UNEVENTFUL. I AM NOT SURE WHAT CAUSED THE DISTR AND LATE DSCNT. NORMAL PREPARATION FOR APCH DUTIES AND CONVERSATION. LESSON LEARNED: SOONER IS BETTER THAN LATER. NOW IS BETTER THAN NEVER.

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.