<< >> NASA ASRS Report 398320, April 1998

An air carrier MD80 flight crew requested that the speed restr be removed at karla. The controller was unable, but the captain thought that he had approved the request, so he kept the speed up. The alert controller corrected him in time to prevent a conflict.

Attributes
ACN	398320
Time
Date	199804
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	398320
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence : clearance non adherence : far other anomaly
Independent Detector	other controllera
Resolutory Action	other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On the bonham arrival, I requested the speed restr at karla be deleted. Approach said they were unable to waive the restr, cross at 250 KTS. Captain was flying the aircraft and misunderstood the controller. He thought controller said the restr was waived. Meanwhile, I became busy with the approach plate and did not xchk his compliance with the restr. After crossing karla, controller asked for our airspeed, which was in excess of 250 KTS. The captain slowed the aircraft promptly. There did not seem to be any traffic conflicts as a result of the excess speed. Lesson learned: always xchk to ensure compliance even if the other guy seems to understand the clearance.

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Original NASA ASRS Text

Title: AN ACR MD80 FLC REQUESTED THAT THE SPD RESTR BE REMOVED AT KARLA. THE CTLR WAS UNABLE, BUT THE CAPT THOUGHT THAT HE HAD APPROVED THE REQUEST, SO HE KEPT THE SPD UP. THE ALERT CTLR CORRECTED HIM IN TIME TO PREVENT A CONFLICT.

Narrative: ON THE BONHAM ARR, I REQUESTED THE SPD RESTR AT KARLA BE DELETED. APCH SAID THEY WERE UNABLE TO WAIVE THE RESTR, CROSS AT 250 KTS. CAPT WAS FLYING THE ACFT AND MISUNDERSTOOD THE CTLR. HE THOUGHT CTLR SAID THE RESTR WAS WAIVED. MEANWHILE, I BECAME BUSY WITH THE APCH PLATE AND DID NOT XCHK HIS COMPLIANCE WITH THE RESTR. AFTER XING KARLA, CTLR ASKED FOR OUR AIRSPD, WHICH WAS IN EXCESS OF 250 KTS. THE CAPT SLOWED THE ACFT PROMPTLY. THERE DID NOT SEEM TO BE ANY TFC CONFLICTS AS A RESULT OF THE EXCESS SPD. LESSON LEARNED: ALWAYS XCHK TO ENSURE COMPLIANCE EVEN IF THE OTHER GUY SEEMS TO UNDERSTAND THE CLRNC.

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.