Large transport flight crew fails to meet crossing restriction on STAR to bwi.

Attributes
ACN	130540
Time
Date	198912
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mrb airport : bwi
State Reference	WV
Altitude	msl bound lower : 15000 msl bound upper : 17500
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 200
ASRS Report	130540
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted none taken : insufficient time none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On 12/xx/89, I was acting as so from den to bwi. Approaching bwi we were cleared for and conducting the westminster 1 arrival (mgw.EMI 1). WX at bwi was heavy snow showers with RVR 3500'. We were told by bwi approach to cross mumsy intersection at 15000'. We actually crossed it at about 17500' in descent. All 3 crew members became somewhat preoccupied with reviewing winter operations in our flight handbook and reviewing the approach plate for the runway in use. As far as I know, there was no near miss or absence of sep. I believe we could have prevented this altitude deviation if we had exercised better crew coordination and started to review all procedures and WX information much further out.

Original NASA ASRS Text

Title: LGT FLT CREW FAILS TO MEET CROSSING RESTRICTION ON STAR TO BWI.

Narrative: ON 12/XX/89, I WAS ACTING AS SO FROM DEN TO BWI. APCHING BWI WE WERE CLRED FOR AND CONDUCTING THE WESTMINSTER 1 ARR (MGW.EMI 1). WX AT BWI WAS HEAVY SNOW SHOWERS WITH RVR 3500'. WE WERE TOLD BY BWI APCH TO CROSS MUMSY INTXN AT 15000'. WE ACTUALLY CROSSED IT AT ABOUT 17500' IN DSCNT. ALL 3 CREW MEMBERS BECAME SOMEWHAT PREOCCUPIED WITH REVIEWING WINTER OPS IN OUR FLT HANDBOOK AND REVIEWING THE APCH PLATE FOR THE RWY IN USE. AS FAR AS I KNOW, THERE WAS NO NEAR MISS OR ABSENCE OF SEP. I BELIEVE WE COULD HAVE PREVENTED THIS ALT DEVIATION IF WE HAD EXERCISED BETTER CREW COORD AND STARTED TO REVIEW ALL PROCS AND WX INFO MUCH FURTHER OUT.

Data retrieved from NASA's ASRS site as of August 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.