# Incident 20170310002639I: Boeing B-737, Boston, MA, March 10, 2017 - Type: FAA incident report (Accident/Incident Data System), as reported - Date: March 10, 2017, 18:55 local time - Place: Boston, MA - Airport: General Edward Lawrence Logan - Damage: Minor damage - Phase of flight: Ground/Ramp/Ma - Operating rules: Air carrier (Part 121) - Operator: ASAA - Location: 42.3629° N, 71.0064° W: Placed by OpenAirDocs at GENERAL EDWARD LAWRENCE LOGAN INTL (BOS), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=42.3629&lon=-71.0064&mi=10 - Aircraft: N493AS, registered now (https://openairdocs.org/aircraft/N493AS) (OpenAirDocs) - Registry model: Boeing 737-990ER (registry code 13848CE, https://openairdocs.org/model/boeing-737-990er) (OpenAirDocs) - Registry engine: CFM International CFM56-7B27E series (registry code 13078, https://openairdocs.org/engine/cfm-international-cfm56-7b27e-series) (OpenAirDocs) - Reported make and model: BOEING B-737 - Reported engine: CFM INTL CFM56 - People aboard: 6 - Fatal injuries: 0 - Other injuries: 2 - Pilot certificates: Airline transport - Pilot flight hours: 22,000 total - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20170310002639I ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. ON MARCH 10, 2017, ALASKA AIRLINES FLIGHT 769, A B737-900ER, SCHEDULED TO FLY FROM BOSTON LOGAN INTERNATIONAL AIRPORT (BOS) TO SAN DIEGO (SAN) COLLIDED WITH A DEICE TRUCK OPERATED BY SWISSPORT GROUND HANDLING. THE COLLISION OCCURRED IN THE "JUILIET" DEICE PAD AT BOSTON AIRPORT. FLIGHT 469 WAS BEING DEICED BY TWO TRUCKS OPERATED BY SWISSPORT. TRUCK "A? WAS DEICING THE AIRCRAFT?S RIGHT SIDE; TRUCK ?C? WAS DEICING THE LEFT. DUE TO STAFFING ISSUES, THE SWISSPORT DEICE SUPERVISOR WAS ALSO ACTING AS THE ?FOLLOW-ME? VEHICLE, ESCORTING AIRCRAFT INTO/OUT OF DEICE PAD. FLIGHT 769 WAS PARKED AT SPOT 3 IN THE "JULIET" DEICE PAD. TOWARDS THE END OF THE DEICE PROCESS, THE SUPERVISOR INSTRUCTED THE TRUCKS TO CHANGE SIDES DUE TO WIND BLOWING DEICE FLUID INTO THE OPEN BUCKET OF TRUCK ?A?. THIS SWAP WAS TO OCCUR AFTER DEICING. BOTH TRUCKS ACKNOWLEDGED THE INSTRUCTION, COMPLETED DEICING, PARKED AFT OF THE AIRCRAFT AND REPORTED CLEAR. THE SUPERVISOR THEN RADIOED THE FLIGHT CREW THE POST-DEICE REPORT, REPORTED CLEAR AND DROVE FROM THE NOSE TO THE TAIL OF THE AIRCRAFT TO OBSERVE IT LEAVE THE DEICE PAD. THE SUPERVISOR REPORTED PARKING THE VAN FACING AWAY FROM THE AIRCRAFT. AT THIS TIME, TRUCK ?A? MIS-HEARD A RADIO INSTRUCTION TO COMPLETE A CONTAMINATION CHECK ON ASA 769. TRUCK ?A? DROVE INTO POSITION IN FRONT OF THE LEFT WING AND THE DEICE TECHNICIAN RETURNED TO THE BUCKET. TRUCK ?A? WAS PERFORMING THIS CONTAMINATION CHECK WHEN THE AIRCRAFT BEGAN TO TAXI OUT OF THE DEICE PAD. THE LEFT WING STUCK THE EXTENDED BOOM OF THE DEICING TRUCK CAUSING IT TO TIP OVER. TRUCK ?A? HAD DRIVEN INTO POSITION AFTER THE FLIGHT CREW VISUALLY CLEARED THE AREA AROUND THE AIRCRAFT. FLIGHT CREW VISIBILITY WAS ALSO HAMPERED BY DE-ICE FLUID COVERING THE FLIGHT DECK WINDOWS. THE SWISSPORT SUPERVISOR HAD LOST VISUAL CONTACT OF TRUCK A DUE TO PARKING THE VEHICLE FACING AWAY FROM THE AIRCRAFT. NO INJURIES WERE REPORTED ONBOARD THE AIRCRAFT. THE COLLISION CAUSED MINOR DAMAGE TO THE AIRCRAFT?S LEFT LEADING EDGE AND WINGLET. THE PASSENGERS WERE DEPLANED ON THE DEICE RAMP AND BUSSED TO THE TERMINAL. THE DRIVER AND DEICE TECHNICIAN OF TRUCK ?A? SUFFERED ONLY MINOR INJURIES. From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.