A C550 pilot stays at original altitude after cleared for the skebr RNAV 1 STAR arrival clearance. ATC later wonders why he hadn't started his descent in accordance with the profile 50 mi northeast of dag, ca.

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Attributes
ACN	535770
Time
Date	200201
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : dag.vortac
State Reference	CA
Altitude	msl bound lower : 19000 msl bound upper : 25000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	general aviation : personal
Make Model Name	Citation II S2/Bravo
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	arrival star : skebr 1
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 50 flight time total : 2950 flight time type : 900
ASRS Report	535770
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued advisory controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Level at FL250 and receiving ATIS from las airport, I was cleared for the skebr RNAV 1 arrival. Read back clearance but did not hear nor read back 'cleared to descend' via the skebr RNAV 1 arrival. Thus, I remained at FL250 awaiting descent instructions. About 10 mi southwest of skebr, controller said 'you've missed your descent profile, turn right heading 165 degrees and descend to FL190' and then continued me around for a right 360 degree turn to allow room for the descent to the mandatory crossing restr of 12000 ft (at 250 KTS) at skebr. I was distraction by ATIS and read back what I thought I heard but was uncertain. I was unfamiliar with this type of STAR with mandatory crossing restrs as opposed to the more common 'expect to' crossing advisories. Commercial charts should state that these type of stars are mandatory crossing restrs if descend to 'descend via' unless otherwise cleared.

Original NASA ASRS Text

Title: A C550 PLT STAYS AT ORIGINAL ALT AFTER CLRED FOR THE SKEBR RNAV 1 STAR ARR CLRNC. ATC LATER WONDERS WHY HE HADN'T STARTED HIS DSCNT IN ACCORDANCE WITH THE PROFILE 50 MI NE OF DAG, CA.

Narrative: LEVEL AT FL250 AND RECEIVING ATIS FROM LAS ARPT, I WAS CLRED FOR THE SKEBR RNAV 1 ARR. READ BACK CLRNC BUT DID NOT HEAR NOR READ BACK 'CLRED TO DSND' VIA THE SKEBR RNAV 1 ARR. THUS, I REMAINED AT FL250 AWAITING DSCNT INSTRUCTIONS. ABOUT 10 MI SW OF SKEBR, CTLR SAID 'YOU'VE MISSED YOUR DSCNT PROFILE, TURN R HDG 165 DEGS AND DSND TO FL190' AND THEN CONTINUED ME AROUND FOR A R 360 DEG TURN TO ALLOW ROOM FOR THE DSCNT TO THE MANDATORY XING RESTR OF 12000 FT (AT 250 KTS) AT SKEBR. I WAS DISTR BY ATIS AND READ BACK WHAT I THOUGHT I HEARD BUT WAS UNCERTAIN. I WAS UNFAMILIAR WITH THIS TYPE OF STAR WITH MANDATORY XING RESTRS AS OPPOSED TO THE MORE COMMON 'EXPECT TO' XING ADVISORIES. COMMERCIAL CHARTS SHOULD STATE THAT THESE TYPE OF STARS ARE MANDATORY XING RESTRS IF DSND TO 'DSND VIA' UNLESS OTHERWISE CLRED.

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.