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NTSB Report
January 13, 1982 · Lockheed L-1011 · N31031
Chicago, IL
Overview
Report Status
Preliminary report
Event Type
Incident
Date
January 13, 1982
Injury Outcomes
No injuries (149 uninjured)
Location
Chicago, IL
Aircraft
Lockheed L-1011
Tail Number
N31031
Operator
Trans World Airlines
Injuries
None
NTSB Number
CHI82IA026
THE AIRCRAFT HAD DEPARTED BOSTON ON A SCHEDULED FLIGHT WITH THE #1 GENERATOR PLACARDED INOPERATIVE AND NOTED IN THE MINIMUM EQUIPMENT LIST. EN ROUTE TO LOS ANGELES, CA AT FL 350, ABOUT 80 MI NORTHEAST OF BAY CITY, MN., THE CREW NOTED A SIMULTANEOUS LOSS OF #2 AND #3 GENERATORS AND ALL AC POWER. AFTER EXECUTING THE EMERGENCY PROCEDURES AND RESTORING POWERVIA THE APU, THE FLIGHT DIVERTED TO CHICAGO, IL AND MADE A NORMAL LANDING. INVESTIGATION REVEALED THAT THE NUMBER THREE GENERATOR HAD AN OPEN FIELD LINING AND THE NUMBER TWO GENERATOR CONTROL UNIT HAD A DEFECTIVE "A" PHASE. THE #1 GENERATORHAD EXPERIENCE A SPRAGUE CLUTCH FAILURE.
Full Narrative
THE AIRCRAFT HAD DEPARTED BOSTON ON A SCHEDULED FLIGHT WITH THE #1 GENERATOR PLACARDED INOPERATIVE AND NOTED IN THE MINIMUM EQUIPMENT LIST. EN ROUTE TO LOS ANGELES, CA AT FL 350, ABOUT 80 MI NORTHEAST OF BAY CITY, MN., THE CREW NOTED A SIMULTANEOUS LOSS OF #2 AND #3 GENERATORS AND ALL AC POWER. AFTER EXECUTING THE EMERGENCY PROCEDURES AND RESTORING POWERVIA THE APU, THE FLIGHT DIVERTED TO CHICAGO, IL AND MADE A NORMAL LANDING. INVESTIGATION REVEALED THAT THE NUMBER THREE GENERATOR HAD AN OPEN FIELD LINING AND THE NUMBER TWO GENERATOR CONTROL UNIT HAD A DEFECTIVE "A" PHASE. THE #1 GENERATORHAD EXPERIENCE A SPRAGUE CLUTCH FAILURE.
Flight
Event TypeIncident
Event Time18:30 CST
Nearest AirportChicago O'Hare Inter'L (0nm N)
Runway14
Runway Length11600 ft
Runway Width200 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftLockheed L-1011
Tail NumberN31031
Aircraft CategoryAir
OperatorTrans World Airlines
Operating RulePart 121
Engines3
Engine TypeTurbofan
Engine DetailsRolls Royce · RB-211 · Turbofan · 42000
Seats274
People & Injuries
Injury SummaryNo injuries (149 uninjured)
Fatal0
Serious0
Minor0
Uninjured149
Total149
Crew 1Age 52 · First Class
Conditions
ConditionsUnknown
LightDark Night
WindCalm
Visibility3 sm
Ceiling1500 ft
Temperature / Dew Point52 / 0 C
Altimeter30.00 inHg
Observation Time18:30