Small transport climbed into TCA without ATC clearance.

Attributes
ACN	142302
Time
Date	199004
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : sfo airport : oak
State Reference	CA
Altitude	msl bound lower : 2000 msl bound upper : 2300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : oak
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 180 flight time total : 1700
ASRS Report	142302
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : exited penetrated airspace other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Climbed approximately 300' into sfo TCA on a VFR departure from oak. Was observed and informed by oak tower. Caused by not checking visibility and DME distance from sfo VOR. Corrective action, descended back below TCA.

Original NASA ASRS Text

Title: SMT CLIMBED INTO TCA WITHOUT ATC CLRNC.

Narrative: CLBED APPROX 300' INTO SFO TCA ON A VFR DEP FROM OAK. WAS OBSERVED AND INFORMED BY OAK TWR. CAUSED BY NOT CHKING VIS AND DME DISTANCE FROM SFO VOR. CORRECTIVE ACTION, DSNDED BACK BELOW TCA.

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.