B727 crew had track and speed deviation in bwi class B.

Attributes
ACN	490700
Time
Date	200011
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bwi.airport
State Reference	MD
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi.tracon
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : bwi.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 5000
ASRS Report	490700
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	other anomaly other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued alert controller : issued new clearance none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

While on vector for visual approach to runway 33L at bwi, controller turned us to 270 degrees and slow to 210 KTS. All 3 crew members heard this instruction. Heading selections were changed to 270 degrees and airspeed bugs set to 210 KTS. Controller called us and told us to turn back to 180 degrees to sequence behind arriving B737 and slow to 170 KTS. We completed the turn, slowed down and landed without further problems. Afterwards, we discussed the situation on the ground and believed he meant to say, 'turn to 210 degrees and slow to 170 KTS.' no further problems noted. We read back the original instructions of 270 degree heading and 210 KT airspeed.

Original NASA ASRS Text

Title: B727 CREW HAD TRACK AND SPD DEV IN BWI CLASS B.

Narrative: WHILE ON VECTOR FOR VISUAL APCH TO RWY 33L AT BWI, CTLR TURNED US TO 270 DEGS AND SLOW TO 210 KTS. ALL 3 CREW MEMBERS HEARD THIS INSTRUCTION. HEADING SELECTIONS WERE CHANGED TO 270 DEGS AND AIRSPD BUGS SET TO 210 KTS. CTLR CALLED US AND TOLD US TO TURN BACK TO 180 DEGS TO SEQUENCE BEHIND ARRIVING B737 AND SLOW TO 170 KTS. WE COMPLETED THE TURN, SLOWED DOWN AND LANDED WITHOUT FURTHER PROBS. AFTERWARDS, WE DISCUSSED THE SIT ON THE GND AND BELIEVED HE MEANT TO SAY, 'TURN TO 210 DEGS AND SLOW TO 170 KTS.' NO FURTHER PROBS NOTED. WE READ BACK THE ORIGINAL INSTRUCTIONS OF 270 DEG HDG AND 210 KT AIRSPD.

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.