NTSB CAROL · Event
Event SEA98IA027
Aircraft involved
Probable cause & findings
A checklist procedure was not followed. The initiation of an evacuation was a factor.
Factual narrative
On December 25, 1997, at 2319 Pacific standard time, a Boeing 737-522, N918UA, flight number 318, registered to and operated by United Airlines as a 14 CFR Part 121 scheduled passenger transport, was standing at the gate at the Eugene, Oregon, Airport and in the process of deplaning passengers when the Captain ordered an emergency evacuation after ground personnel reported a fire in the number 2 engine. Visual meteorological conditions prevailed at the time and an instrument flight rules flight plan had been filed for the flight. The airplane was not damaged. The two airline transport rated pilots, three flight attendants, and 100 passengers were not injured. The flight had originated from San Francisco, California, about one hour and 30 minutes before the incident. United Airlines personnel reported that the flight crew was told to expect ground power to be hooked to the airplane at the gate. The aircraft was taxied to the gate and the jetway was positioned to the 1 left door. While the passengers were beginning to deplane, the captain positioned the fuel levers to "cutoff" to shutdown both engines. The ground power had not yet been connected and the airplane went dark. The captain then positioned both fuel levers back to the "idle" position. Immediately following this action, ground crew noticed smoke and notified the flight crew of a fire in the number two engine. The captain immediately initiated an evacuation by using the PA system. The flight crew then performed the checklist procedures and when they got to the position of the fuel levers step in the list, the captain noticed that the fuel levers were in the "idle" position. The captain then positioned the fuel levers to the "cutoff" position. The smoke began to dissipate from the engine and the all clear signal was given by the ground crew. After the smoke dissipated, the captain cancelled the evacuation. Approximately 20 passengers had deplaned via the 2-right slide to the ground. Another 10 to 20 passengers went out the over wing exit. When the evacuation was cancelled, the passengers that had not reached the ground, came back inside the cabin and exited via the 1-left door. The slide at 2-left did not deploy as the door had not been re-armed. The flight attendant reported that the event was over before the door could be closed and the slide re-armed. Mechanics inspected the engine and reported that there was no indication of an actual fire and suspected that when the fuel lever was positioned to the "idle" position, the fuel valve opened and jet fuel was injected into the decelerating hot engine. After the airplane had taxied to and stopped at the gate, the jetway was positioned to the 1 left door. While the passengers were beginning to deplane, the captain positioned the fuel levers to the 'cutoff' position. Ground power had not yet been connected and the airplane went dark. The captain then repositioned the fuel levers to the 'idle' position. Immediately following this action, ground personnel noticed smoke coming from the number two engine and notified the flight crew of a fire. The captain ordered an evacuation and began the checklist procedures. When the flight crew reached the position of the fuel levers step in the checklist, the captain noticed that the fuel levers were in the 'idle' position. The captain then positioned the fuel levers to the 'cutoff' position. The smoke began to dissipate from the engine and the all clear signal was given by the ground crew. After the smoke dissipated, the captain cancelled the evacuation. Approximately 20 passengers had deplaned via the 2 right slide to the ground. Another 10 to 20 passenger went out the over wing exit. Maintenance personnel inspected the engine and reported that there was no indication of an actual fire, and suspected that when the fuel lever was positioned to the 'idle' position, the fuel valve opened and jet fuel was injected into the hot decelerating engine. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_SEA98IA027.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Beyond the agency record
Search this event elsewhere.
Pre-filled searches into the sources where news + community discussion of aviation events lives. External sources are reported, not agency. Treat them as signal that something happened, not as fact about what happened.
Entity-clustered aviation events in the press — last 24 hr + 30-day archive.
Official agency record + docket.
Investigative docket: factual reports, photos, transcripts.
Long-running aviation incident database (Flight Safety Foundation).
Community NTSB synthesis blog — often has photos and witness reports.
Gold-standard aviation incident blog.
Aviation industry news search.
GA pilot forum — informed but rumor-prone.
GA pilot subreddit search.
Tail-number page — flight history (free tier limited).
AOPA Air Safety Institute search.
Mainstream press coverage. Recent events only.
Privacy-preserving news search.
External links open in a new tab. We don't ingest their content; we deep-link search queries.
Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Just Culture in Aviation: A Metaphorical Study on Aircraft Maintenance Students
Just Culture, a sub-dimension of safety culture, has been a prominent and debated topic in aviation safety in recent years.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Performance PRISM: A Comprehensive Framework For Performance Measurement In Aircraft Maintenance
Aircraft maintenance is governed by rigorous safety requirements and high operational complexity, demanding robust performance measurement frameworks to ensure optimal maintenance practices.
Browse the full corpus — academia portal ↗