Lear LJ60 flight crew has altitude deviation during departure from mdw.

Attributes
ACN	723105
Time
Date	200701
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mdw.airport
State Reference	IL
Altitude	msl single value : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	general aviation : corporate
Make Model Name	Learjet 60
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 7600 flight time type : 800
ASRS Report	723105
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On departure there was significant engine vibration. As we were climbing out first officer received clearance to 17000 ft; which was read back to controller. Controller supervisor advised us that clearance was only to 13000 ft as we were passing through 13500 ft; 170 was a heading assignment. Workload was heavy because first officer was also trying to determine source of engine noise as well as prepare plane for approach back to mdw as it was decided on climb out to return to airport.

Original NASA ASRS Text

Title: LEAR LJ60 FLT CREW HAS ALTDEV DURING DEP FROM MDW.

Narrative: ON DEP THERE WAS SIGNIFICANT ENG VIBRATION. AS WE WERE CLBING OUT FO RECEIVED CLRNC TO 17000 FT; WHICH WAS READ BACK TO CTLR. CTLR SUPVR ADVISED US THAT CLRNC WAS ONLY TO 13000 FT AS WE WERE PASSING THROUGH 13500 FT; 170 WAS A HDG ASSIGNMENT. WORKLOAD WAS HVY BECAUSE FO WAS ALSO TRYING TO DETERMINE SOURCE OF ENG NOISE AS WELL AS PREPARE PLANE FOR APCH BACK TO MDW AS IT WAS DECIDED ON CLBOUT TO RETURN TO ARPT.

Data retrieved from NASA's ASRS site as of January 2009 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.