Skydiving pilot and TRACON controller reported the skydiving aircraft entered class B clearance with...

Attributes
ACN	1445176
Time
Date	201705
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Transport Low Wing 2 Turboprop Eng
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	None
Person 1
Function	Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 300 Flight Crew Total 27000 Flight Crew Type 30
Person 2
Function	Approach Supervisor / CIC
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 17.3
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

I departed for a skydiving climb in class B airspace. I called approach twice and got ignored both times. I assumed the controller was busy and that he would see my permanent squawk code and reply since he asked if I would be back up and I told him that I would be back up in 10 minutes. We have a letter of agreement (LOA) with TRACON to operate in their class B as long as we stay on our designated squawk code; stay south east of the extended runway centerlines below 14;000 feet. It was my understanding that this LOA was authorized would act as our class B clearance in writing. I saw this LOA in person and felt that I was authorized to enter class B airspace so when the controller failed to respond to my two previous calls I did not keep calling him because I thought that he may have more pressing traffic to tend to and that he would see my discreet squawk code and know that I would be climbing to the west away from the airport as usual. This all happened during shift change. The male controller did notice me about a minute after my last call to him and he was then replaced by a lady controller that asked me to contact TRACON about a possible deviation. We are blessed to have the best controllers. I am not sure what was going on with this controller today but I will be more persistent in establishing contact from now on.

Original NASA ASRS Text

Title: Skydiving pilot and TRACON Controller reported the skydiving aircraft entered Class B clearance without a clearance from ATC.

Narrative: I departed for a skydiving climb in Class B airspace. I called approach twice and got ignored both times. I assumed the controller was busy and that he would see my permanent squawk code and reply since he asked if I would be back up and I told him that I would be back up in 10 minutes. We have a Letter Of Agreement (LOA) with TRACON to operate in their Class B as long as we stay on our designated squawk code; stay south east of the extended runway centerlines below 14;000 feet. It was my understanding that this LOA was authorized would act as our Class B clearance in writing. I saw this LOA in person and felt that I was authorized to enter Class B airspace so when the controller failed to respond to my two previous calls I did not keep calling him because I thought that he may have more pressing traffic to tend to and that he would see my discreet squawk code and know that I would be climbing to the west away from the airport as usual. This all happened during shift change. The male controller did notice me about a minute after my last call to him and he was then replaced by a lady controller that asked me to contact TRACON about a possible deviation. We are blessed to have the best controllers. I am not sure what was going on with this controller today but I will be more persistent in establishing contact from now on.

Data retrieved from NASA's ASRS site 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.

Skydiving pilot and TRACON controller reported the skydiving aircraft entered class B clearance without a clearance from ATC.