Frontier Airlines Flight 128
Boeing 737-201 · Accident while standing
From Denver International Airport (DEN) to Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP)
Event
- NTSB case
- FTW97LA177
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Boeing 737-201
- Aircraft type
- Boeing 737
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N217US
- Operator
- Frontier Airlines
- Onboard fatalities
- Unknown
- Route
- From Denver International Airport (DEN)To Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP), Minneapolis, MN
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 121: Air Carrier
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Standing · engine(s) not operating
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Miscellaneous/other
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- None
Cause areas
- Flight attendant › Procedures/directives, not followed
- Flight attendant › Unsafe/hazardous condition, not identified
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The parked airplane was ready for pushback when the 'B' flight attendant told the 'A' flight attendant that a thru passenger had reported the cabin cleaning crew had mistakenly removed his child's stuffed animal and he wanted it returned. The 'A' flight attendant opened the forward entry door after the jetway had backed away from the airplane. Either losing his balance or not realizing the jetway had backed away, he fell 8 feet, 3 inches to the tarmac below, fracturing both wrists, his jaw, and sustaining a concussion. According to the company's chief flight attendant, the injured flight attendant violated company policy and procedures by opening the cabin door prior to the jetway being placed in position.
Probable cause
The flight attendant's failure to assure that the jetway was placed in the proper position prior to opening the forward cabin entry door.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW97LA177
- Event ID
- 20001208X07906
- Case number
- FTW97LA177
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, damage. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: c85228adb7bec2668df3d8a87fa3fe5b6c0b861e4f1d366ba9ea9060cf75fc4e; retrieved 2026-09-18T17:35:43.201Z.