Air carrier fails to level at assigned altitude during departure.

Attributes
ACN	453120
Time
Date	199910
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pbi.airport
State Reference	FL
Altitude	msl bound lower : 4000 msl bound upper : 4500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : pbi.tracon
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : n/s
Aircraft 2
Controlling Facilities	tracon : pbi.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Route In Use	arrival other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 9500 flight time type : 2000
ASRS Report	453120
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On departure, I became distraction flying the SID, and as the PF, I let the aircraft 'balloon up' approximately 500 ft before correcting back down towards my assigned altitude of 4000 ft. At approximately 4300 ft, I received a clearance to climb to FL230 and resumed a climb. Another aircraft on a perpendicular course was descending behind me. Our TCASII indicated a separation of 400-500 ft, 4-5 NM. No TCASII warning was indicated.

Original NASA ASRS Text

Title: ACR FAILS TO LEVEL AT ASSIGNED ALT DURING DEP.

Narrative: ON DEP, I BECAME DISTR FLYING THE SID, AND AS THE PF, I LET THE ACFT 'BALLOON UP' APPROX 500 FT BEFORE CORRECTING BACK DOWN TOWARDS MY ASSIGNED ALT OF 4000 FT. AT APPROX 4300 FT, I RECEIVED A CLRNC TO CLB TO FL230 AND RESUMED A CLB. ANOTHER ACFT ON A PERPENDICULAR COURSE WAS DSNDING BEHIND ME. OUR TCASII INDICATED A SEPARATION OF 400-500 FT, 4-5 NM. NO TCASII WARNING WAS INDICATED.

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.