Commuter mdt altitude deviation overshot during climb out from dca.

Attributes
ACN	134975
Time
Date	199001
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dca
State Reference	DC
Altitude	msl bound lower : 22000 msl bound upper : 24000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : zdc
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 7000 flight time type : 2000
ASRS Report	134975
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation Operational Deviation

Narrative:

Climbing to FL240, ZDC advised us to expedite to FL220. The clearance was read back to expedite through FL220 to FL240. After passing through FL225, center advised us we were cleared only to FL220 per his last instructions. The last instructions from the center controller were very weak and garbled. This quality of transmission is very common from ZDC in that area.

Original NASA ASRS Text

Title: COMMUTER MDT ALT DEVIATION OVERSHOT DURING CLIMB OUT FROM DCA.

Narrative: CLBING TO FL240, ZDC ADVISED US TO EXPEDITE TO FL220. THE CLRNC WAS READ BACK TO EXPEDITE THROUGH FL220 TO FL240. AFTER PASSING THROUGH FL225, CENTER ADVISED US WE WERE CLRED ONLY TO FL220 PER HIS LAST INSTRUCTIONS. THE LAST INSTRUCTIONS FROM THE CENTER CTLR WERE VERY WEAK AND GARBLED. THIS QUALITY OF XMISSION IS VERY COMMON FROM ZDC IN THAT AREA.

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.