A departure C172 private pilot enters the class B airspace of mia without authority/authorized.

Attributes
ACN	424326
Time
Date	199812
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : opf airport : hwo
State Reference	FL
Altitude	msl bound lower : 2000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Route In Use	departure other enroute : on vectors
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument
Experience	flight time last 90 days : 35 flight time total : 1100 flight time type : 1000
ASRS Report	424326
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	inflight encounter : weather other anomaly other other anomaly other
Independent Detector	other controllera
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

I departed hwo airport VFR. The tower gave me a heading to depart and told me to contact opf tower. There were numerous scattered cumulus in the area which I was circumnaving in the climb. Opf tower alerted me of an aircraft which just departed and was climbing in my direction. I wanted to get above the scattered layer to be able to see any conflicting traffic. I thought I was 'close' to mia's class B airspace, so after 2500 ft, I asked opf tower for a frequency change and called mia approach. No longer concerned about the traffic, I glanced at the sectional and realized I had probably entered mia class B. I turned wbound to exit as quickly as possible and began a descent. The mia approach controller informed me I was in the class B and told me to descend to 2000 ft. The problem was caused by thinking I was more familiar with the airspace than I was. I fly in the area occasionally, but almost never out of north perry (first departure from there in about 2 yrs). I failed to adequately study the sectional before departing and when my attention was distraction by clouds and traffic I forgot about airspace temporarily. I have learned to thoroughly familiarize myself with surrounding airspace before departing, and to be aware at all times of airspace.

Original NASA ASRS Text

Title: A DEP C172 PVT PLT ENTERS THE CLASS B AIRSPACE OF MIA WITHOUT AUTH.

Narrative: I DEPARTED HWO ARPT VFR. THE TWR GAVE ME A HDG TO DEPART AND TOLD ME TO CONTACT OPF TWR. THERE WERE NUMEROUS SCATTERED CUMULUS IN THE AREA WHICH I WAS CIRCUMNAVING IN THE CLB. OPF TWR ALERTED ME OF AN ACFT WHICH JUST DEPARTED AND WAS CLBING IN MY DIRECTION. I WANTED TO GET ABOVE THE SCATTERED LAYER TO BE ABLE TO SEE ANY CONFLICTING TFC. I THOUGHT I WAS 'CLOSE' TO MIA'S CLASS B AIRSPACE, SO AFTER 2500 FT, I ASKED OPF TWR FOR A FREQ CHANGE AND CALLED MIA APCH. NO LONGER CONCERNED ABOUT THE TFC, I GLANCED AT THE SECTIONAL AND REALIZED I HAD PROBABLY ENTERED MIA CLASS B. I TURNED WBOUND TO EXIT AS QUICKLY AS POSSIBLE AND BEGAN A DSCNT. THE MIA APCH CTLR INFORMED ME I WAS IN THE CLASS B AND TOLD ME TO DSND TO 2000 FT. THE PROB WAS CAUSED BY THINKING I WAS MORE FAMILIAR WITH THE AIRSPACE THAN I WAS. I FLY IN THE AREA OCCASIONALLY, BUT ALMOST NEVER OUT OF NORTH PERRY (FIRST DEP FROM THERE IN ABOUT 2 YRS). I FAILED TO ADEQUATELY STUDY THE SECTIONAL BEFORE DEPARTING AND WHEN MY ATTN WAS DISTR BY CLOUDS AND TFC I FORGOT ABOUT AIRSPACE TEMPORARILY. I HAVE LEARNED TO THOROUGHLY FAMILIARIZE MYSELF WITH SURROUNDING AIRSPACE BEFORE DEPARTING, AND TO BE AWARE AT ALL TIMES OF AIRSPACE.

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.