B737-700 flight crew has a speed deviation during the chins 5 arrival to sea.

Attributes
ACN	722760
Time
Date	200701
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : raddy
State Reference	WA
Altitude	msl single value : 20000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse.artcc
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival star : chins
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 210 flight time type : 5500
ASRS Report	72276
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance other anomaly
Independent Detector	other controllera
Resolutory Action	controller : issued advisory
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Aircraft Company Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

The event happened after we were cleared to descend via the chins 5 arrival into sea. The arrival has a restr of 280 KTS at 16000 ft at raddy. ATC asked our indicated airspeed approximately 15 NM prior to raddy. I responded and noted that we were about 250 KIAS and asked what speed they needed. They directed us to comply with the 280 KIAS restr at raddy. We increased airspeed to 280 degrees and continued the arrival; approach and landing. Once on the ground; tower advised us to call ZSE area supervisor. Our discussion afterwards centered on the fact that our new lower cost index 15 in the B737NG descends at 256 KIAS which is slower than the arrival requires. Even though both pilots reviewed and verified the speed and altitude restrs on the arrival and in the aircraft database; the aircraft slowed in VNAV to match the lower cost index 15 speed.

Original NASA ASRS Text

Title: B737-700 FLT CREW HAS A SPD DEV DURING THE CHINS 5 ARR TO SEA.

Narrative: THE EVENT HAPPENED AFTER WE WERE CLRED TO DSND VIA THE CHINS 5 ARR INTO SEA. THE ARR HAS A RESTR OF 280 KTS AT 16000 FT AT RADDY. ATC ASKED OUR INDICATED AIRSPEED APPROX 15 NM PRIOR TO RADDY. I RESPONDED AND NOTED THAT WE WERE ABOUT 250 KIAS AND ASKED WHAT SPD THEY NEEDED. THEY DIRECTED US TO COMPLY WITH THE 280 KIAS RESTR AT RADDY. WE INCREASED AIRSPD TO 280 DEGS AND CONTINUED THE ARR; APCH AND LNDG. ONCE ON THE GND; TWR ADVISED US TO CALL ZSE AREA SUPVR. OUR DISCUSSION AFTERWARDS CTRED ON THE FACT THAT OUR NEW LOWER COST INDEX 15 IN THE B737NG DSNDS AT 256 KIAS WHICH IS SLOWER THAN THE ARR REQUIRES. EVEN THOUGH BOTH PLTS REVIEWED AND VERIFIED THE SPD AND ALT RESTRS ON THE ARR AND IN THE ACFT DATABASE; THE ACFT SLOWED IN VNAV TO MATCH THE LOWER COST INDEX 15 SPD.

Data retrieved from NASA's ASRS site as of January 2009 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.