Date: 201509
Local time of day: 1201-1800
Location: MYBS.Airport, FO
Flight conditions: VMC
Weather elements / visibility: 10
Light: Daylight
Aircraft: PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operator: Personal
Operating under: Part 91
Flight plan: None
Mission: Personal
Flight phase: Final Approach
ATC / advisory: CTAF MYBS
Second aircraft: DA40 Diamond Star
Reporter organization: Personal
Reporter function: Pilot Flying; Single Pilot
Reporter qualification: Flight Crew Private
Human factors: Situational Awareness
Anomaly: Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Took Evasive Action
Contributing factors: Human Factors
Primary problem: Human Factors

Narrative: I was on short final for Runway 10 at MYBS. I had established communication over CTAF 122.80 10 miles out; announcing my intentions to land on 10. Several times; I asked whether there was 'any landing or departing traffic in the area of Bimini' and I heard no traffic reports from any aircraft from 10 miles out until I landed my aircraft on 10. Unbeknownst to me; the pilot of the DA40 was on short final at the same time but was not transmitting over 122.8 at all. When my aircraft was about 400 feet AGL and short final I saw; below me; the DA40 fly under my airplane at about 200 feet AGL and then veer off to the north when he was about 300 feet in front of me. At this point he still did not communicate at all over 122.8. He made no attempt to communicate over 122.8 and ask for 'any traffic in the area.' I landed my aircraft and he went around; and landed his aircraft after mine. When we were on the tarmac; one of the occupants of the [other] aircraft walked over to my plane. I assumed since he explained what happened that he was the pilot in command. I told him that I did not hear him declare his intentions to land at all on 122.8. I asked him why he had not established communication. I told him that he 'came out of nowhere and almost hit me.' He said that he was talking to me the entire time but he said that I was not responding. He also said he was in constant communicating 'with Miami'. I asked him why 'would you be in communication with Miami and not Bimini's CTAF; 122.8' he was very unclear and could not give me a straight answer. I do not believe that he had established any communication at all with 122.8 because he said he was instead in communication with Miami Approach. I told him that it's customary here to establish communication on 122.8 at least 10 miles from the airport. I told him that if indeed he believed that I was not hearing him over 122.8; then he should have departed the airspace since it was unsafe for two aircraft to land on the same airport if they are not in communication. After ten minutes of speaking with this gentlemen; I discovered that he was not the pilot in command. I asked who the pilot in command was and he pointed to another person. I tried speaking with this person but he did not speak English and the person I was previously speaking with tried translating but I became upset and stopped talking to them entirely. [I spoke to a] representative of the Bimini airport administration [who] was in the airport and listening in on CTAF. She said she did not hear the other pilot on CTAF at all. She said she only heard me.




Synopsis: PA28 pilot reported an NMAC on approach to MYBS; and stated that the other aircraft did not appear to be using CTAF.