Jetstream 32 cruising at 9000 ft was given an altitude crossing restr of 8000 ft but forgot to desce...

Attributes
ACN	352020
Time
Date	199611
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ftz
State Reference	MO
Altitude	msl bound lower : 8000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc
Operator	common carrier : air carrier
Make Model Name	Jetstream 32
Operating Under FAR Part	Part 135
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 3700 flight time type : 114
ASRS Report	352020
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 250 flight time total : 5500 flight time type : 600
ASRS Report	352017
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared to cross 15 mi southwest of foristell VOR at 8000 ft. There was some confusion during the readback, the controller thought I said 115 mi southwest. Because of this confusion, I didn't put 8000 ft into the altitude alert. This may be one of the factors, why the captain didn't start his descent to cross the fix at 8000 ft. As we were approaching 15 mi from the VOR, I was talking to company calling in-range and didn't think about having to descend. At about 11 mi from the VOR, the controller told us to descend to 8000 ft and we realized we forgot the crossing restr. We then descended to 8000 ft without further incident.

Original NASA ASRS Text

Title: JETSTREAM 32 CRUISING AT 9000 FT WAS GIVEN AN ALT XING RESTR OF 8000 FT BUT FORGOT TO DSND.

Narrative: WE WERE CLRED TO CROSS 15 MI SW OF FORISTELL VOR AT 8000 FT. THERE WAS SOME CONFUSION DURING THE READBACK, THE CTLR THOUGHT I SAID 115 MI SW. BECAUSE OF THIS CONFUSION, I DIDN'T PUT 8000 FT INTO THE ALT ALERT. THIS MAY BE ONE OF THE FACTORS, WHY THE CAPT DIDN'T START HIS DSCNT TO CROSS THE FIX AT 8000 FT. AS WE WERE APCHING 15 MI FROM THE VOR, I WAS TALKING TO COMPANY CALLING IN-RANGE AND DIDN'T THINK ABOUT HAVING TO DSND. AT ABOUT 11 MI FROM THE VOR, THE CTLR TOLD US TO DSND TO 8000 FT AND WE REALIZED WE FORGOT THE XING RESTR. WE THEN DSNDED TO 8000 FT WITHOUT FURTHER INCIDENT.

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.

Jetstream 32 cruising at 9000 ft was given an altitude crossing restr of 8000 ft but forgot to descend.