A high time instructor pilot was not sure he remained outside lax class B airspace.

Attributes
ACN	413210
Time
Date	199809
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lgb
State Reference	CA
Altitude	msl bound lower : 5500 msl bound upper : 7500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 20 flight time total : 25000
ASRS Report	413210
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : private
Events
Anomaly	other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other

Narrative:

We left lgb from runway 25R with a downwind departure, climbing to 5500 ft MSL, leveled off and flew to the edge of class B airspace on an east heading. When I figured that we were clear of class B airspace, we started a climb to 7500 ft on an east heading to do some airwork. I don't believe that we got into class B airspace. This is just in case that we did.

Original NASA ASRS Text

Title: A HIGH TIME INSTRUCTOR PLT WAS NOT SURE HE REMAINED OUTSIDE LAX CLASS B AIRSPACE.

Narrative: WE LEFT LGB FROM RWY 25R WITH A DOWNWIND DEP, CLBING TO 5500 FT MSL, LEVELED OFF AND FLEW TO THE EDGE OF CLASS B AIRSPACE ON AN E HDG. WHEN I FIGURED THAT WE WERE CLR OF CLASS B AIRSPACE, WE STARTED A CLB TO 7500 FT ON AN E HDG TO DO SOME AIRWORK. I DON'T BELIEVE THAT WE GOT INTO CLASS B AIRSPACE. THIS IS JUST IN CASE THAT WE DID.

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.