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August 3, 1987 · Airbus Industrie A-300-B4-203 A300-B4-20 · N966C
Denver, CO
Overview
Report Status
Preliminary report
Event Type
Incident
Date
August 3, 1987
Injury Outcomes
No injuries (279 uninjured)
Location
Denver, CO
Aircraft
Airbus Industrie A-300-B4-203 A300-B4-20
Tail Number
N966C
Injuries
None
Aircraft Damage
Minor
NTSB Number
DEN87IA207
AS COPLT ACCELERATED ACFT THROUGH 128 KTS FOR TAKEOFF, ELECTRICAL MALFUNCTION OCCURRED RESULTING IN UNRELIABLE INSTRUMENT INDICATIONS. CAPT REJECTED TAKEOFF. ACFT WENT OFF END OF 12000-FT RWY. POST-INCIDENT EXAMINATION DISCLOSED NO. 1 CONSTANT SPEED DRIVE (CSD) OUTPUT SLOWED DUE TO OIL LEAKAGE. GENERATOR CONTROL UNIT TRIPPED AND OPENED LINE CONTACTOR. WITH REMOVAL OF ELECTRICAL LOAD, CSD OUTPUT SPEED INCREASED & ELECTRICAL LOAD REAPPLIED. CYCLE REPEATED ITSELF EVERY 0.84 SECONDS. CSD HAD NEVER BEEN OVERHAULED IN 10 YRS OF SERVICE. CVR/DFDR REVEALED ELECTRICAL MALFUNCTION OCCURRED AT 1240:12 & ABORT COMMAND GIVEN AT 1240:29. AT 1240:26, WHEN PWR WAS RESTORED TO DFDR, ACFT WAS DECELERATING THRU 171.08 KIAS. V1,VR, & V2 COMPUTED TO BE 161, 161, AND 165 KTS & ACCELERATE-STOP DISTANCE ABOUT 11,500 FT. INVESTIGATION FURTHER REVEALED ACFT GREEN BRAKE SYSTEM INOP & YELLOW SYSTEM USED. ADDITIONALLY, NO. 7 BRAKE ANTISKID INOP. BOTH ARE ALLOWABLE DEFERRED MAINTENANCE ITEMS.
Full Narrative
AS COPLT ACCELERATED ACFT THROUGH 128 KTS FOR TAKEOFF, ELECTRICAL MALFUNCTION OCCURRED RESULTING IN UNRELIABLE INSTRUMENT INDICATIONS. CAPT REJECTED TAKEOFF. ACFT WENT OFF END OF 12000-FT RWY. POST-INCIDENT EXAMINATION DISCLOSED NO. 1 CONSTANT SPEED DRIVE (CSD) OUTPUT SLOWED DUE TO OIL LEAKAGE. GENERATOR CONTROL UNIT TRIPPED AND OPENED LINE CONTACTOR. WITH REMOVAL OF ELECTRICAL LOAD, CSD OUTPUT SPEED INCREASED & ELECTRICAL LOAD REAPPLIED. CYCLE REPEATED ITSELF EVERY 0.84 SECONDS. CSD HAD NEVER BEEN OVERHAULED IN 10 YRS OF SERVICE. CVR/DFDR REVEALED ELECTRICAL MALFUNCTION OCCURRED AT 1240:12 & ABORT COMMAND GIVEN AT 1240:29. AT 1240:26, WHEN PWR WAS RESTORED TO DFDR, ACFT WAS DECELERATING THRU 171.08 KIAS. V1,VR, & V2 COMPUTED TO BE 161, 161, AND 165 KTS & ACCELERATE-STOP DISTANCE ABOUT 11,500 FT. INVESTIGATION FURTHER REVEALED ACFT GREEN BRAKE SYSTEM INOP & YELLOW SYSTEM USED. ADDITIONALLY, NO. 7 BRAKE ANTISKID INOP. BOTH ARE ALLOWABLE DEFERRED MAINTENANCE ITEMS.
Flight
Event TypeIncident
Event Time12:40 MDT
Nearest AirportStapleton Int'L (0nm N)
Runway35R
Runway Length12000 ft
Runway Width200 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAirbus Industrie A-300-B4-203 A300-B4-20
Tail NumberN966C
Aircraft CategoryAir
DamageMinor
Operating RulePart 121
Engines2
Engine TypeTurbofan
Engine DetailsGe · CF6-50C2 · Turbofan · 38000
Seats273
People & Injuries
Injury SummaryNo injuries (279 uninjured)
Fatal0
Serious0
Minor0
Uninjured279
Total279
Crew 1Age 47 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind10° @ 11 kt
Visibility30 sm
CeilingOvercast 25000 ft
Temperature / Dew Point55
Altimeter30.00 inHg
Observation Time18:50
Weather SourceWFAC