Air carrier medium large transport altitude deviation overshot during climb.

Attributes
ACN	100027
Time
Date	198812
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : gso
State Reference	NC
Altitude	msl bound lower : 10000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : gso
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
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 : 5300
ASRS Report	100027
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation Operational Deviation

Narrative:

After contacting gso departure we were cleared up to 12000'. I read back 12000' as 'one, two thousand' and dialed it in the preselect. Climbing through 10300', gso departure said 'maintain 10000'.' I read back 10000' and reset preselect while sic flying stopped climb at 10500' and went back down. I told controller that I had read back 12000'. He apologized for missing the readback and said his airspace only went to 10000'. Incidentally, there had been a loud background squelch on both tower and ground. On an earlier leg from bwi to gso I forgot to set new transponder code. Should have dialed it in immediately when cleared.

Original NASA ASRS Text

Title: ACR MLG ALT DEVIATION OVERSHOT DURING CLIMB.

Narrative: AFTER CONTACTING GSO DEP WE WERE CLRED UP TO 12000'. I READ BACK 12000' AS 'ONE, TWO THOUSAND' AND DIALED IT IN THE PRESELECT. CLBING THROUGH 10300', GSO DEP SAID 'MAINTAIN 10000'.' I READ BACK 10000' AND RESET PRESELECT WHILE SIC FLYING STOPPED CLB AT 10500' AND WENT BACK DOWN. I TOLD CTLR THAT I HAD READ BACK 12000'. HE APOLOGIZED FOR MISSING THE READBACK AND SAID HIS AIRSPACE ONLY WENT TO 10000'. INCIDENTALLY, THERE HAD BEEN A LOUD BACKGROUND SQUELCH ON BOTH TWR AND GND. ON AN EARLIER LEG FROM BWI TO GSO I FORGOT TO SET NEW TRANSPONDER CODE. SHOULD HAVE DIALED IT IN IMMEDIATELY WHEN CLRED.

Data retrieved from NASA's ASRS site as of August 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.