Acknowledged descent to 10000', controller says cleared to 11000'.

Attributes
ACN	133930
Time
Date	199001
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : etx
State Reference	PA
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
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 : 200 flight time total : 7400 flight time type : 2300
ASRS Report	133930
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 5000 flight time type : 300
ASRS Report	133908
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ZNY on frequency 135.75 issued a descent clearance from cruise to cross etx at 10000' and 250 KTS. As we leveled at 10000', center called back and said the crossing restriction was etx at 11000' and 250 KTS. First officer restated the clearance as we had received it and as he had originally read it back, which was 'east tx at 1-0-thousand at 200 and 50 KTS.' center stated: 'no problem, climb and maintain 11000,' which we did. No traffic incursion or conflict. As long as there is verbal communication between human beings with no hard copy verification (such as an ACARS message perhaps) these problems are sure to occur.

Original NASA ASRS Text

Title: ACKNOWLEDGED DESCENT TO 10000', CTLR SAYS CLEARED TO 11000'.

Narrative: ZNY ON FREQ 135.75 ISSUED A DSCNT CLRNC FROM CRUISE TO CROSS ETX AT 10000' AND 250 KTS. AS WE LEVELED AT 10000', CENTER CALLED BACK AND SAID THE XING RESTRICTION WAS ETX AT 11000' AND 250 KTS. F/O RESTATED THE CLRNC AS WE HAD RECEIVED IT AND AS HE HAD ORIGINALLY READ IT BACK, WHICH WAS 'E TX AT 1-0-THOUSAND AT 200 AND 50 KTS.' CENTER STATED: 'NO PROB, CLB AND MAINTAIN 11000,' WHICH WE DID. NO TFC INCURSION OR CONFLICT. AS LONG AS THERE IS VERBAL COM BTWN HUMAN BEINGS WITH NO HARD COPY VERIFICATION (SUCH AS AN ACARS MESSAGE PERHAPS) THESE PROBS ARE SURE TO OCCUR.

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.