First officer reported not knowing the airport had an operational control tower until tower controll...

Narrative:

Company charts and NOTAM's did not reflect an operational control tower/ground control/ATIS. We canceled IFR with miami center around 5;000 feet when we had the field in sight. I was making position reports on CTAF (common traffic advisory frequency) and was contacted by tower over CTAF with a frequency for tower. We were approximately 15 miles out and performing a left 360 for separation at the time. Tower ask us to report established on final. When we were back on final they cleared us to land. On short final I noticed that the rotating beacon was on. After landing and taxiing in; I discovered that the tower had been operational for the past two weeks. On flight after departing VFR and getting back into ACARS range we received the missing NOTAM for the first time; which reflected the information about the new tower and that the arff (aircraft rescue and firefighting) had been downgraded. At this time we realized that the fire department on the field may not have been able to handle the amount of passengers our aircraft is able to carry.lack of communication between the company and ATC. Previous [company] pilots not reporting changes over the past few weeks of flying into the airport.

Original NASA ASRS Text

Title: First Officer reported not knowing the airport had an operational Control Tower until Tower Controller called the crew on CTAF and advised them of the correct frequency to be on.

Narrative: Company charts and NOTAM's did not reflect an operational Control Tower/Ground Control/ATIS. We canceled IFR with Miami Center around 5;000 feet when we had the field in sight. I was making position reports on CTAF (Common Traffic Advisory Frequency) and was contacted by Tower over CTAF with a frequency for Tower. We were approximately 15 miles out and performing a left 360 for separation at the time. Tower ask us to report established on final. When we were back on final they cleared us to land. On short final I noticed that the rotating beacon was on. After landing and taxiing in; I discovered that the Tower had been operational for the past two weeks. On flight after departing VFR and getting back into ACARS range we received the missing NOTAM for the first time; which reflected the information about the new Tower and that the ARFF (Aircraft Rescue and Firefighting) had been downgraded. At this time we realized that the fire department on the field may not have been able to handle the amount of passengers our aircraft is able to carry.Lack of communication between the company and ATC. Previous [company] pilots not reporting changes over the past few weeks of flying into the airport.

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	1618904
Time
Date	201902
Local Time Of Day	0601-1200
Place
Locale Reference	MYAM.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Medium Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Person 1
Function	First Officer
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

First officer reported not knowing the airport had an operational control tower until tower controller called the crew on CTAF and advised them of the correct frequency to be on.