<< >> NASA ASRS Report 492580, November 2000

Flight crew of a B727-100 failed to make crossing restr during descent on STAR arrival due to misinterp of the STAR procedures chart.

Attributes
ACN	492580
Time
Date	200011
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : esl.vortac
State Reference	WV
Altitude	msl single value : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	B727-100
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : jasen two
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 170 flight time total : 3400 flight time type : 2300
ASRS Report	492580
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued alert none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was flying and given clearance to cross bucko at FL250. I was at FL290. I was supposed to fly the jasen 2 into iad. When I was given the FL250 crossing restr, I looked on the arrival and saw the 'X' 25 NM west of esl that says to expect clearance to cross at FL250. This is not bucko, but the word bucko is written just above it. I planned my descent to cross this fix at FL250. However, bucko is 14 mi to the west of where I was planning to cross. As we came up on bucko and were not at FL250, center asked what we were doing. This is when I realized the mistake I had made. I should have read the arrival more carefully. The only thing I think might help is if crossing restr on arrs are named intxns rather than an unnamed X on the arrival.

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Original NASA ASRS Text

Title: FLC OF A B727-100 FAILED TO MAKE XING RESTR DURING DSCNT ON STAR ARR DUE TO MISINTERP OF THE STAR PROCS CHART.

Narrative: I WAS FLYING AND GIVEN CLRNC TO CROSS BUCKO AT FL250. I WAS AT FL290. I WAS SUPPOSED TO FLY THE JASEN 2 INTO IAD. WHEN I WAS GIVEN THE FL250 XING RESTR, I LOOKED ON THE ARR AND SAW THE 'X' 25 NM W OF ESL THAT SAYS TO EXPECT CLRNC TO CROSS AT FL250. THIS IS NOT BUCKO, BUT THE WORD BUCKO IS WRITTEN JUST ABOVE IT. I PLANNED MY DSCNT TO CROSS THIS FIX AT FL250. HOWEVER, BUCKO IS 14 MI TO THE W OF WHERE I WAS PLANNING TO CROSS. AS WE CAME UP ON BUCKO AND WERE NOT AT FL250, CTR ASKED WHAT WE WERE DOING. THIS IS WHEN I REALIZED THE MISTAKE I HAD MADE. I SHOULD HAVE READ THE ARR MORE CAREFULLY. THE ONLY THING I THINK MIGHT HELP IS IF XING RESTR ON ARRS ARE NAMED INTXNS RATHER THAN AN UNNAMED X ON THE ARR.

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.