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HISTORY OF FLIGHTOn February 16, 2023, about 2059 eastern standard time, Air Canada Rouge flight 1633

(ROU1633), an Airbus 321-200, registration C-GKFB, was cleared to take-off on runway 14 at Sarasota-Bradenton International Airport (SRQ), Sarasota, Florida, and American Airlines flight 2172 (AAL2172), a Boeing 737-800, registration N826NN, was cleared to land on the same runway. AAL2172’s crew self-initiated a go-around. Of the 2 pilots, 4 flight attendants, and 188 passengers on board ROU1633, and the 2 pilots, 4 flight attendants, and 172 passengers aboard AAL2172, there were no injuries. There was no damage to either airplane.

ROU1633 was a 14 Code of Federal Regulations (CFR) Part 129 foreign scheduled international passenger flight from SRQ to Lester B. Pearson International Airport (CYYZ), Toronto, Canada. AAL2172 was a 14 CFR Part 121 scheduled domestic passenger flight from Charlotte/Douglas International Airport (CLT), Charlotte, North Carolina to SRQ. Night visual meteorological conditions prevailed at the time of the incident.

The flight crew of AA2172 stated that while on the approach, about 3 nautical miles from Runway 14, Sarasota tower cleared ROU1633 for takeoff on runway 14 and notified them of the departing traffic ahead. The crew said that they saw the flight ahead of them as a potential threat and said that their threat mitigation plan was to go-around if the departing ROU1633 was still on the runway when they transitioned from the approach to landing phase. The crew further stated that as they approached the threshold of runway 14, it appeared that ROU1633 was still on the takeoff roll and not yet airborne. They executed the go-around and notified SRQ ATCT and then complied with heading and altitude instructions and returned for a subsequent uneventful approach and landing on runway 14.

The NTSB reviewed a summary of ATC communication services provided to ROU1633 and AAL2172 while operating in Tampa International Airport terminal radar approach control (TPA TRACON) and SRQ Air Traffic Control Tower (ATCT). The communications with TPA TRACON were routine and uneventful. The runway incursion occurred while both flight crews were in communications with and operating in the SRQ ATCT airspace. Two FAA controllers were on duty at the time, but one was on break, and the local control (LC) controller was the only person in the tower at that time. All ATCT positions including that of the operational supervisor were combined, and the workload was stated as normal for the time of day and for one controller being in the ATCT cab.

At 2050:20, the crew of ROU1633 advised the LC controller that he was ready to taxi. The LC controller instructed the crew to taxi to runway 14 via taxiway A, and cross runway 22. The crew readback the instructions as issued.

At 2052:13, the crew of ROU1633 asked the LC controller to confirm they were cleared to cross runway 22. The LC controller responded affirmative and instructed the crew to cross runway 22.

At 2054:09, the crew of AAL2172 contacted SRQ ATCT and reported they were on a visual approach to runway 14. The LC controller provided the crew the wind and cleared them to land on runway 14. Automatic Dependent Surveillance–Broadcast (ADS-B) data indicated that AAL2172 was approximately 12 nautical miles (nm) northwest of SRQ airport.

At 2057:01, the LC controller asked the crew of ROU1633 if they were ready. The crew responded that they were ready.

At 2057:07, the LC controller instructed the crew of ROU1633 to fly runway heading, cleared the flight for takeoff runway 14, and advised them that traffic (AAL2172) was on a 3-mile final. The crew read back “cleared for takeoff runway 14”, and at the time ADS-B data indicated that AAL2172 was about 4.1 nm from the threshold of runway 14, see figure 2.

Figure 2. Graphic depicts the location of AAL2172 and ROU1633 during noted times.

At 2057:20, the LC controller informed the crew of AAL2172 that an Airbus will be departing runway 14. The crew then acknowledged by stating their call sign. ADS-B data indicated that AAL2172 was about 3.4 nm from the threshold of runway 14.

At 2057:39, the crew of ROU1633 asked the LC controller to confirm they were to fly runway heading. The LC controller stated, “affirmative, fly runway heading”. ADS-B data showed that at the time AAL2172 was about 2.5 nm from the threshold of runway 14.

At 2058:35, the crew of AAL2172 stated they were “going around”. The LC controller stated “roger”. At that time, ADS-B data indicated that AAL2172 had crossed the threshold of runway 14 and was abeam taxiway A3, and ROU1633 was airborne from runway 14 and abeam taxiway B and subsequently departed the airport environment uneventfully.

AAL2172 was then given instructions to turn right to a heading of 270 degrees and to contact the TPA TRACON for re-sequencing. AAL2172 subsequently landed uneventfully. ROU1633 continued to CYYZ and landed uneventfully. METEOROLOGICAL INFORMATIONThe SRQ weather at 2053 EST, was wind from 230 degrees at 4 knots, 10 statute miles visibility, clear skies below 12,000 ft agl, temperature 22 degrees C, dew point temperature 18 degrees C, altimeter 30.09 inHg. ADDITIONAL INFORMATIONFAA Order JO 7110.65Z, Air Traffic Control

Chapter 2, Section 1, paragraph 2-1-1, ATC Service, stated in part:

a. The primary purpose of the ATC system is to prevent a collision involving aircraft operating in the system.

Chapter 2, Section 1, paragraph 2-1-2, Duty Priority, stated in part:

a. Give first priority to separating aircraft and issuing safety alerts as required in this order. Good judgement must be used in prioritizing all other provisions of this order based on the requirements of the situation at hand.

Chapter 3, Section 10, paragraph 3-10-3, Same Runway Separation, stated in part:

a. Separate an arriving aircraft from another aircraft using the same runway by ensuring that the arriving aircraft does not cross the landing threshold until one of the following conditions exists or unless authorized in paragraphs 3-10-10, Altitude Restricted Low Approach.

2. The other aircraft has departed and crossed the runway end. If you can determine distances by reference to suitable landmarks and the other aircraft is airborne, it need not have crossed the runway end if the following minimum distance from the landing threshold exists:

(a) Category I aircraft landing behind Category I or II – 3,000 feet.

(b) Category II aircraft landing behind Category I or II – 4,500 feet.

(c) When either is Category III aircraft – 6,000 feet.

FAA Order JO 7110.65Z was superseded by JO 7110.65BB on February 20, 2025, but did not change the above information. INJURIES TO PERSONSThere were no injuries to occupants of either airplane during this incident. DAMAGE TO AIRCRAFTThere was no damage to either airplane.