ZDC controller alerts C560 flight crew of altitude overshoot.

Attributes
ACN	523152
Time
Date	200108
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : mol.vortac
State Reference	VA
Altitude	msl bound lower : 23000 msl bound upper : 24000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	general aviation : corporate
Make Model Name	Citation V
Operating Under FAR Part	Part 91
Navigation In Use	other other vortac
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 100
ASRS Report	523152
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 9500 flight time type : 1200
ASRS Report	523338
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I understood that we were cleared to descend to FL230. I dialed in FL230 in the altitude selector. The controller came back after we leveled at FL230 and asked us our altitude. We responded FL230. She said that we had been cleared to descend to FL240. She asked us to climb back to FL240, which we did. I thought that I read back to her FL230 in the initial clearance. I may have misunderstood.

Original NASA ASRS Text

Title: ZDC CTLR ALERTS C560 FLC OF ALT OVERSHOOT.

Narrative: I UNDERSTOOD THAT WE WERE CLRED TO DSND TO FL230. I DIALED IN FL230 IN THE ALT SELECTOR. THE CTLR CAME BACK AFTER WE LEVELED AT FL230 AND ASKED US OUR ALT. WE RESPONDED FL230. SHE SAID THAT WE HAD BEEN CLRED TO DSND TO FL240. SHE ASKED US TO CLB BACK TO FL240, WHICH WE DID. I THOUGHT THAT I READ BACK TO HER FL230 IN THE INITIAL CLRNC. I MAY HAVE MISUNDERSTOOD.

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.