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Northwest Airlines Boeing 727-200 accident

9 Sept 1988 · Minneapolis, MN, United States

Boeing 727-200 · Accident: on ground/water collision with object during pushback

From an unrecorded airport to Winnipeg / James Armstrong Richardson International Airport (YWG)

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Event

NTSB case
CHI88FA233
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 727-200

Aircraft type
Boeing 727
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
N729RW
Onboard fatalities
Unknown
Route
From not recordedTo Winnipeg / James Armstrong Richardson International Airport (YWG), WINNIPEG,CANADA
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
Pushback/towing
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
On ground/water collision with object
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Clearance › Not maintained
  • Pilot in command › Procedures/directives, not followed

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

AFTER PUSHBACK FROM THE JETWAY, THE AIRPLANE HIT A GROUND HANDLING VEHICLE (TUG) AS THE FLT CREW STARTED TO TAXI FOR TAKEOFF. AN INVESTIGATION REVEALED THAT AFTER PUSHBACK, THE GROUND CREW INFORMED THE FLT CREW (VIA INTERCOM) THAT THE BYPASS PIN WAS REMOVED & THE STEERING WAS CONNECTED. THE GROUND CREWMAN ENDED THE CONVERSTATION BY STATING 'YOU GENTLEMEN HAVE A NICE TRIP, SEE YOU ANOTHER DAY.' THE INTERCOM WAS DISCONNECTED & THE CAPTAIN STARTED TO TAXI, BEFORE RECEIVING A VISUAL SIGNAL FROM THE GROUND CREW & BEFORE THE TUG WAS REMOVED FROM THE AIRPLANE'S PATH. SUBSEQUENTLY, THE AIRPLANE HIT THE TOP OF THE TUG & DAMAGED THE LOWER RIGHT PART OF THE FORWARD FUSELAGE (BELOW THE COCKPIT WINDOWS).

Probable cause

FAILURE OF THE CAPTAIN TO FOLLOW COMPANY PUSHBACK PROCEDURES AND NOT GETTING A RELEASE BEFORE STARTING TO TAXI.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record CHI88FA233
Event ID
20001213X26783
Case number
CHI88FA233
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (5)
  • 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. 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: b768cc113b9a2a662cea0379cd43393a88e7255079e8b3c56f36eada51d21776; retrieved 2026-09-18T19:19:01.002Z.
  • The NTSB's operator name is blank for N729RW; the operator shown is the name the NTSB's other records give its FAA operator code, NWAA.