# Incident 20250821019539I: Boeing 737-890, Portland, OR, August 21, 2025

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: August 21, 2025, 21:30 local time
- Place: Portland, OR
- Airport: Portland International Airport
- Damage: Minor damage
- Phase of flight: Taxi
- Operating rules: Air carrier (Part 121)
- Operator: ASAA
- Location: 45.5887° N, 122.5969° W: Placed by OpenAirDocs at PORTLAND INTL (PDX), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5887&lon=-122.5969&mi=10
- Aircraft: N508AS, registered now (https://openairdocs.org/aircraft/N508AS) (OpenAirDocs)
- Registry model: Boeing 737-890 (registry code 1384527, https://openairdocs.org/model/boeing-737-890) (OpenAirDocs)
- Registry engine: CFM International CFM56-7B27 series (registry code 13046, https://openairdocs.org/engine/cfm-international-cfm56-7b27-series) (OpenAirDocs)
- Reported make and model: BOEING 737-890
- Reported engine: CFM INTL CFM56-7B27
- People aboard: 31
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 3,701 total, 2,680 in this make and model, 94 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20250821019539I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AT PDX, THE FLIGHT CREW FOR ALASKA FLIGHT 1291 TAXIED FROM THE TERMINAL TO RUNWAY 28L FOR TAKEOFF.  AS THE CAPTAIN MADE A TURN, HE MISJUDGED THE TAXIWAY, EDGE, AND MARKINGS.  THE AIRCRAFT ROLLED OVER TAXIWAY EDGE LIGHTS BETWEEN B3 AND B4 AND BETWEEN TANGO AND BRAVO.  TWO TAXIWAY LIGHTS WERE DAMAGED AND THE AIRCRAFT SUSTAINED DAMAGE TO THE LEFT INBOARD MAIN LANDING GEAR TIRE (TIRE #2).  THE CAPTAIN OBTAINED ASSISTANCE TO RETURN THE AIRCRAFT TO THE TAXIWAY.  HE THEN TAXIED THE AIRCRAFT BACK TO THE GATE FOR MAINTENANCE INSPECTION AND REPAIR.

THE FLIGHT CREW REPORTED THE WEATHER CONDITIONS WERE CLEAR AND DRY.  IT WAS NIGHTIME.  THE CAPTAIN STATED HE MISJUDGED THE TURN.  NIGHT OPERATIONS AND TAXIWAY SIGN PLACEMENT WERE FACTORS (THE TAXIWAY SIGN IS PLACED AFTER THE TAXIWAY).  THE FIRST OFFICER STATED THAT HE HAD AN EXPECTATION BIAS ABOUT THE TAXIWAY LAYOUT.  THE FO ALSO STATED HE EXPERIENCED A MOMENT OF HESITATION, AND HE SHOULD HAVE SPOKE UP AT FIRST UNCERTAINTY.

THE ROOT CAUSE ANALYSIS CATEGORY IS INFORMATION PROCESSING.  THE SUBCATEGORY IS PERCEPTION.

TO MITIGATE THE RISK OF A FUTURE EVENT, THE CAPTAIN STATES HE WILL DO A MORE THOROUGH REVIEW OF EACH AIRPORT TAXIWAY LAYOUT AND ROUTING.  THE FIRST OFFICER STATED HE WOULD VOICE CONCERNS AT THE FIRST MOMENT OF UNCERTAINTY.

THE FLIGHT CREW ASAP'D THIS EVENT.  THE ASAP ERC ACCEPTED THE FLIGHT CREW REPORTS AND HAS SUBSEQUENTLY CLOSED THE EVENT.

ACTIVITY:  NM02202502164

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.

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