The scenario described—an Embraer regional jet ingesting debris on takeoff roll at a small ski-town airport with no heavy maintenance base—is a textbook Aircraft on Ground (AOG) event, and it illustrates one of the less-discussed realities of the regional airline business model. SkyWest, like most regional carriers flying under capacity purchase agreements for major airlines, deliberately concentrates heavy maintenance capability at a handful of hub-adjacent MRO facilities while stationing only line mechanics at outstations capable of basic troubleshooting, minor repairs, and turn checks. A fan blade strike severe enough to require an engine change exceeds what any outstation can handle, and it triggers a well-defined but logistically punishing recovery process that most passengers—and even many pilots outside the maintenance and operations control world—never see.
The actual recovery involves several coordinated workstreams. First, SkyWest's Maintenance Operations Control Center (or the equivalent at whichever airline's livery the jet was wearing) opens an AOG case and dispatches an engine-change team, not just an engine. Changing a CF34 or similar turbofan in the field requires specialized ground support equipment: an engine change stand or hoist rated and calibrated for the airframe, slings, torque tooling, borescope equipment for surrounding damage inspection, and often a mobile maintenance kit shipped via truck or chartered cargo aircraft. Airlines and MRO providers maintain contracts with regional GSE rental companies and airframe-specific tooling caches at strategic locations precisely for this reason—Denver, Salt Lake City, or another SkyWest heavy base would likely be the source. Depending on road access and weather (a real variable in Montana ski country), this equipment and a spare engine can take anywhere from 24 hours to several days to arrive, and that's before accounting for winter storms that can shut mountain passes or delay trucking altogether.
Once on site, engine changes are far more field-feasible than many pilots assume, provided a hard stand, adequate lighting, and reasonably level ramp space exist—which most towered ski-town airports have. Mechanics use portable engine stands and cranes rather than fixed hangar hoists; the "right tolerances" the original poster worried about are achievable in the open with calibrated tooling, though it's slower and more weather-exposed than hangar work. What often actually gates the recovery isn't the engine swap itself but the post-installation requirements: engine runs need runway or ramp space clear of obstructions and personnel, borescope inspection of the fan case and surrounding structure for secondary FOD damage, and possibly airframe damage assessment if debris struck the fuselage or wing leading edge. If damage extends beyond the engine—cowling, pylon, or structural skin—the airplane may need engineering disposition from the OEM before return-to-service, which can add days or weeks and sometimes involves a ferry permit for a one-time flight to a heavy base rather than full repair on site.
This matters to working pilots for a few practical reasons. Crews operating into remote or single-carrier stations should understand that an AOG event isn't resolved on the timeline of a normal MEL deferral or component swap—it can strand an aircraft, and by extension a crew, for days, with real duty-time and hotel-logistics implications that dispatch and crew scheduling have to manage in real time. It also underscores why regional carriers maintain spare aircraft ferry capability and interline agreements: when a jet is down hard at an outstation, the airline's first move is often protecting the schedule by swapping in a spare from a maintenance base rather than waiting on the repair, while the damaged aircraft becomes a slower-burn recovery project running in parallel. For pilots and ops personnel, this is also a good reminder of how FOD-conscious mainline and regional carriers have become at contract stations lacking dedicated ramp sweeping equipment—rock and debris ingestion events, while rare, are exactly the kind of low-frequency, high-cost risk that drives airport FOD-walk requirements and engine inlet inspection emphasis during preflight, especially at gravel-adjacent or unpaved-shoulder mountain airports.