<< >> NASA ASRS Report 364840, April 1997

Air carrier MD80 is given a descent clearance to cross tammy at 10000 ft 25 mi from tammy. Reporter twice told the controller they were unable tammy at 10000 ft. Controller queried flight crew as to their plans and were told to stand by when flight crew asked for a new clearance. Flight crossed tammy at 12500 ft. Reporter alleges the controller never came back with a different crossing restr.

Attributes
ACN	364840
Time
Date	199704
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mem
State Reference	TN
Altitude	msl bound lower : 10000 msl bound upper : 12500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme tower : pia
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
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	364840
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Cleared to cross tammy at 10000 ft, 25 mi from tammy at FL240. Advised unable. Controller asked why and what we were planning. I said unable tammy at 10000 ft. Controller ignored us and asked a second time what we had been planning. I told him unable tammy at 10000 ft. Controller never released or gave us a new restr. We crossed tammy at 12500 ft. After I had told controller twice that we were unable to cross tammy at 10000 ft I asked for a new clearance and the controller said stand by, and he never came back with a different crossing restr.

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Original NASA ASRS Text

Title: ACR MD80 IS GIVEN A DSCNT CLRNC TO CROSS TAMMY AT 10000 FT 25 MI FROM TAMMY. RPTR TWICE TOLD THE CTLR THEY WERE UNABLE TAMMY AT 10000 FT. CTLR QUERIED FLC AS TO THEIR PLANS AND WERE TOLD TO STAND BY WHEN FLC ASKED FOR A NEW CLRNC. FLT CROSSED TAMMY AT 12500 FT. RPTR ALLEGES THE CTLR NEVER CAME BACK WITH A DIFFERENT XING RESTR.

Narrative: CLRED TO CROSS TAMMY AT 10000 FT, 25 MI FROM TAMMY AT FL240. ADVISED UNABLE. CTLR ASKED WHY AND WHAT WE WERE PLANNING. I SAID UNABLE TAMMY AT 10000 FT. CTLR IGNORED US AND ASKED A SECOND TIME WHAT WE HAD BEEN PLANNING. I TOLD HIM UNABLE TAMMY AT 10000 FT. CTLR NEVER RELEASED OR GAVE US A NEW RESTR. WE CROSSED TAMMY AT 12500 FT. AFTER I HAD TOLD CTLR TWICE THAT WE WERE UNABLE TO CROSS TAMMY AT 10000 FT I ASKED FOR A NEW CLRNC AND THE CTLR SAID STAND BY, AND HE NEVER CAME BACK WITH A DIFFERENT XING RESTR.

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.