<< >> NASA ASRS Report 387376, December 1997

An air carrier B727 flight crew started the turn to an assigned heading too soon. The alert controller corrected them.

Attributes
ACN	387376
Time
Date	199712
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : dxo
State Reference	MI
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 50 flight time total : 5400 flight time type : 2000
ASRS Report	387376
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance non adherence : far non adherence : published procedure other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

First officer was plting the aircraft while captain managed the radio communications. Aircraft was established on the dxo 147 degree radial 39 DME at 12000 ft MSL as outlined on the cetus 2 arrival into dtw. Captain had just checked in with dtw approach control on 134.3 VHF. The controller gave our aircraft the following instructions (this statement is a verbatim quote of what he said). '(Call sign) expect runway 21L, runway 21R closed. At gloze, fly heading 030 degrees.' first officer immediately turned off the arrival to heading 030 degrees. The dtw controller issued an immediate left turn to 300 degrees. After a couple of moments of cockpit discussion to determine what had actually happened, captain explained to controller the cockpit misunderstood 'runway 21R closed' versus 'gloze, turn....' aircraft landed without further incident.

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Original NASA ASRS Text

Title: AN ACR B727 FLC STARTED THE TURN TO AN ASSIGNED HDG TOO SOON. THE ALERT CTLR CORRECTED THEM.

Narrative: FO WAS PLTING THE ACFT WHILE CAPT MANAGED THE RADIO COMS. ACFT WAS ESTABLISHED ON THE DXO 147 DEG RADIAL 39 DME AT 12000 FT MSL AS OUTLINED ON THE CETUS 2 ARR INTO DTW. CAPT HAD JUST CHKED IN WITH DTW APCH CTL ON 134.3 VHF. THE CTLR GAVE OUR ACFT THE FOLLOWING INSTRUCTIONS (THIS STATEMENT IS A VERBATIM QUOTE OF WHAT HE SAID). '(CALL SIGN) EXPECT RWY 21L, RWY 21R CLOSED. AT GLOZE, FLY HDG 030 DEGS.' FO IMMEDIATELY TURNED OFF THE ARR TO HDG 030 DEGS. THE DTW CTLR ISSUED AN IMMEDIATE L TURN TO 300 DEGS. AFTER A COUPLE OF MOMENTS OF COCKPIT DISCUSSION TO DETERMINE WHAT HAD ACTUALLY HAPPENED, CAPT EXPLAINED TO CTLR THE COCKPIT MISUNDERSTOOD 'RWY 21R CLOSED' VERSUS 'GLOZE, TURN....' ACFT LANDED WITHOUT FURTHER INCIDENT.

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.