Air carrier descending to cross with speed and altitude restriction. Misses both.

Attributes
ACN	223679
Time
Date	199210
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	arrival other enroute airway : bos
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	223679
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	other anomaly
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The first officer was flying and descending to cross bronc intersection (15 mi east of gardner VOR). At 11000 at 250 KTS as assigned by ATC. It was early in the morning and little traffic, or at least little ATC talking. We were going to be early and the flight attendants advised they were still picking up the cabin. The first officer slowed down since we were early. After the flight attendants left the flight deck we realized that we were high. Since there was little radio traffic, and we had one of the few aircraft without TCASII the first officer picked up speed to make crossing altitude. The omega's showed the fix to be further than it was according to DME. When center handed off to bos approach he asked speed we were reducing through on the way to 250. It was 265 and rapidly coming back but the omega showed us 2 mi to go. Then I realized the DME showed us past bronc. Nothing more was said regarding speed but it made me realize how much we had come to use TCASII for spacing into hub/high density areas, (ie, if noone was 15 or 20 mi in front of us we know we can usually get approval to keep speed up). Factors: distrs. Conflicting information. Dependence on equipment/technology.

Original NASA ASRS Text

Title: ACR DSNDING TO CROSS WITH SPD AND ALT RESTRICTION. MISSES BOTH.

Narrative: THE FO WAS FLYING AND DSNDING TO CROSS BRONC INTXN (15 MI E OF GARDNER VOR). AT 11000 AT 250 KTS AS ASSIGNED BY ATC. IT WAS EARLY IN THE MORNING AND LITTLE TFC, OR AT LEAST LITTLE ATC TALKING. WE WERE GOING TO BE EARLY AND THE FLT ATTENDANTS ADVISED THEY WERE STILL PICKING UP THE CABIN. THE FO SLOWED DOWN SINCE WE WERE EARLY. AFTER THE FLT ATTENDANTS LEFT THE FLT DECK WE REALIZED THAT WE WERE HIGH. SINCE THERE WAS LITTLE RADIO TFC, AND WE HAD ONE OF THE FEW ACFT WITHOUT TCASII THE FO PICKED UP SPD TO MAKE XING ALT. THE OMEGA'S SHOWED THE FIX TO BE FURTHER THAN IT WAS ACCORDING TO DME. WHEN CTR HANDED OFF TO BOS APCH HE ASKED SPD WE WERE REDUCING THROUGH ON THE WAY TO 250. IT WAS 265 AND RAPIDLY COMING BACK BUT THE OMEGA SHOWED US 2 MI TO GO. THEN I REALIZED THE DME SHOWED US PAST BRONC. NOTHING MORE WAS SAID REGARDING SPD BUT IT MADE ME REALIZE HOW MUCH WE HAD COME TO USE TCASII FOR SPACING INTO HUB/HIGH DENSITY AREAS, (IE, IF NOONE WAS 15 OR 20 MI IN FRONT OF US WE KNOW WE CAN USUALLY GET APPROVAL TO KEEP SPD UP). FACTORS: DISTRS. CONFLICTING INFO. DEPENDENCE ON EQUIP/TECHNOLOGY.

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.