Accident Boeing 747-228B (SCD) N4506H, Sunday 24 July 1988
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Date:Sunday 24 July 1988
Time:01:24
Type:Silhouette image of generic B742 model; specific model in this crash may look slightly different    
Boeing 747-228B (SCD)
Owner/operator:Air France
Registration: N4506H
MSN: 22794/558
Year of manufacture:1982
Engine model:General Electric CF6-50E2
Fatalities:Fatalities: 0 / Occupants: 275
Other fatalities:0
Aircraft damage: Substantial, repaired
Category:Accident
Location:Delhi-Indira Gandhi International Airport (DEL) -   India
Phase: Take off
Nature:Passenger - Scheduled
Departure airport:Delhi-Indira Gandhi International Airport (DEL/VIDP)
Destination airport:Paris-Charles de Gaulle Airport (CDG/LFPG)
Confidence Rating: Accident investigation report completed and information captured
Narrative:
A Boeing 747-228B (SCD), operating Air France flight 187 to Paris, suffered a takeoff accident at Delhi-Indira Gandhi International Airport (DEL), India.
The copilot was pilot flying. During takeoff the aircraft attained V1 (156 kts). Two and a half seconds later the No. 4 engine fire warning came on. The copilot rejected the takeoff at a speed of 172 kts.
The aircraft overran the runway, causing the main gear to collapse. There was no fire.

PROBABLE CAUSE: "The improper decision of the handling pilot (co-pilot) to abort the take-off at a speed higher than V1 following fire warning coming on No. 4 engine due to crack in turbine mid frame outer casing. Lack of crew coordination was a contributory cause."

Sources:

NTSB/SIR-90/02 (5)
Civil aviation aircraft accident summary for the year 1988 (DGAC India)

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