J3 cub pilot reported an near midair collision in the pattern at the non-towered airport.

Narrative:

While attempting to fuel my plane; I noticed a C-152 land; taxi back to runway 36; and takeoff. Because of problems with the card reader on the pump; I was unable to get gas and decided to fly a few patterns while the line crew sorted out the problem. During this time I didn't notice any aircraft in the pattern; and figured the C-152 had departed. I taxied out and after my before takeoff checks; I scanned the pattern and took off. I flew a standard crosswind; downwind and base; announcing my position using standard reports. I heard someone making traffic reports on CTAF but I couldn't understand what they were saying because of their accent. I figured they were at one of the nearby airports that use [similar frequency] because I didn't see anyone in the pattern. When I turned final; I saw the 152 I had previously seen slightly below and ahead of me (perhaps 3 aircraft lengths ahead of me) as I was in a descending left turn. I broke out of the pattern to the right; performing a 270 degree turn to achieve safe spacing on the cessna and land. Human factors: I should have been more curious about which airport this aircraft was flying the pattern. I don't know if I would have understood or gotten a response; but I could have asked the pilot where they were directly.

Original NASA ASRS Text

Title: J3 Cub pilot reported an NMAC in the pattern at the non-towered airport.

Narrative: While attempting to fuel my plane; I noticed a C-152 land; taxi back to RWY 36; and takeoff. Because of problems with the card reader on the pump; I was unable to get gas and decided to fly a few patterns while the line crew sorted out the problem. During this time I didn't notice any aircraft in the pattern; and figured the C-152 had departed. I taxied out and after my before takeoff checks; I scanned the pattern and took off. I flew a standard crosswind; downwind and base; announcing my position using standard reports. I heard someone making traffic reports on CTAF but I couldn't understand what they were saying because of their accent. I figured they were at one of the nearby airports that use [similar frequency] because I didn't see anyone in the pattern. When I turned final; I saw the 152 I had previously seen slightly below and ahead of me (perhaps 3 aircraft lengths ahead of me) as I was in a descending left turn. I broke out of the pattern to the right; performing a 270 degree turn to achieve safe spacing on the Cessna and land. Human Factors: I should have been more curious about which airport this aircraft was flying the pattern. I don't know if I would have understood or gotten a response; but I could have asked the pilot where they were directly.

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.

Attributes
ACN	1734013
Time
Date	202003
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	J3 Cub
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Flight Plan	None
Aircraft 2
Make Model Name	Cessna 152
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Multiengine Flight Crew Flight Engineer Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 15 Flight Crew Total 7500 Flight Crew Type 50
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 30 Vertical 20