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NTSB Report
August 6, 1992 · Boeing 737-200 · N9010U
San Francisco, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 6, 1992
Injury Outcomes
1 injury (1 serious injury), 113 uninjured
Location
San Francisco, CA
Aircraft
Boeing 737-200
Tail Number
N9010U
Operator
United Airlines
Injuries
Serious
NTSB Number
LAX92LA336
DURING PUSHBACK FROM A TERMINAL GATE, THE TOWBAR BECAME DISCONNECTED, ALLOWING THE AIRPLANE TO CONTINUE TO ROLL BACKWARD. GROUND PERSONNEL, UTILIZING AN INTERCOM SYSTEM, CALLED FOR AN EMERGENCY STOP AND THE CAPTAIN APPLIED THE AIRPLANE BRAKES. DURING THE SUDDEN STOP, A CABIN CREW MEMBER LOST HER BALANCE AND FELL AGAINST A SEAT ARMREST, SUSTAINING A FRACTURED SHOULDER.
NTSB Probable Cause
THE IMPROPER INSTALLATION OF THE TOWBAR. CONTRIBUTING TO THE ACCIDENT WAS A DISCONNECTED TOW BAR DURING PUSH BACK.
Full Narrative
DURING PUSHBACK FROM A TERMINAL GATE, THE TOWBAR BECAME DISCONNECTED, ALLOWING THE AIRPLANE TO CONTINUE TO ROLL BACKWARD. GROUND PERSONNEL, UTILIZING AN INTERCOM SYSTEM, CALLED FOR AN EMERGENCY STOP AND THE CAPTAIN APPLIED THE AIRPLANE BRAKES. DURING THE SUDDEN STOP, A CABIN CREW MEMBER LOST HER BALANCE AND FELL AGAINST A SEAT ARMREST, SUSTAINING A FRACTURED SHOULDER.
Flight
Event TypeAccident
Event Time09:33 PDT
Nearest AirportSan Francisco (0nm)
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBoeing 737-200
Tail NumberN9010U
Aircraft CategoryAir
OperatorUnited Airlines
Operating RulePart 121
Engines2
Engine TypeTurbojet
Engine DetailsP&W · JT8 · Turbojet · 20000
Seats114
People & Injuries
Injury Summary1 injury (1 serious injury), 113 uninjured
Fatal0
Serious1
Minor0
Uninjured113
Total114
Crew 1Age 48 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind260° @ 9 kt
Visibility10 sm
CeilingBroken clouds 1100 ft
Temperature / Dew Point57 / 54
Altimeter30.00 inHg
Observation Time15:50
Weather SourceWFAC