Minor Investigation Closed

SY252 - Sun Country Airlines Boeing 737-800 Pressurization Issue

Friday, June 13, 2025 at 12:35 PM (GMT-4)
737-800
Sun Country Airlines
Boston Logan International Airport

Sun Country Airlines Flight 252, operated by a Boeing 737-800, departed Boston Logan International Airport (BOS) bound for Minneapolis-St. Paul International Airport (MSP) on June 13, 2025. During the flight, the crew reported a pressurization issue and declared the situation to air traffic control. Following standard operating procedures for pressurization emergencies, the crew initiated a return to the departure airport. The aircraft executed a safe landing at Boston Logan Airport at approximately 12:35 PM Eastern Time. All passengers and crew members were safely evacuated with no injuries reported. The aircraft was grounded for inspection and repair of the pressurization system. The FAA was notified as per standard incident reporting requirements.

Sun Country Airlines Boeing 737-800 operating flight SY-252 from Boston Logan to Minneapolis experiences pressurization issue during flight. Crew executes emergency return to Boston Logan Airport, landing safely at 12:35 PM with all passengers and crew safe.

Aircraft Details

737-800Boeing
RegistrationUnder investigation
Manufactured2010

Operator Details

Sun Country Airlines(SY)
CountryUSA
Fleet Size48 aircraft

Weather Conditions (METAR)

Raw METAR KBOS 131254Z 25010KT 10SM FEW040 SCT080 22/14 A3005
AirportKBOS
Time12:54 PM (GMT+0)
Temperature22.0°C
Dewpoint14.0°C
Wind250° at 10 knots
Visibility 16093 m
Cloud Layer 1Few (FEW) 4,000ft AGL
Cloud Layer 2Scattered (SCT) 8,000ft AGL
Pressure30.05 inHg
Highlighted METAR entries relate to weather conditions within 30 minutes of the incident time.

Casualty Information

Casualty Information

Casualty information has not been reported.

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