Accident description
Last updated: 27 November 2014
Status:Final
Date:Monday 26 November 1979
Time:02:04
Type:Silhouette image of generic B703 model; specific model in this crash may look slightly different
Boeing 707-340C
Operator:Pakistan International Airlines - PIA
Registration: AP-AWZ
C/n / msn: 20275/844
First flight: 1970
Total airframe hrs:30710
Engines: 4 Pratt & Whitney JT3D-3B
Crew:Fatalities: 11 / Occupants: 11
Passengers:Fatalities: 145 / Occupants: 145
Total:Fatalities: 156 / Occupants: 156
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:48 km (30 mls) N of Taif (   Saudi Arabia) show on map
Crash site elevation: 915 m (3002 feet) amsl
Phase: En route (ENR)
Nature:International Scheduled Passenger
Departure airport:Jeddah-King Abdulaziz International Airport (JED/OEJN), Saudi Arabia
Destination airport:Karachi International Airport (KHI/OPKC), Pakistan
Flightnumber: 740
Narrative:
Flight PK740 departed Jeddah at 01:29 for a flight to Karachi. The aircraft was climbing to FL370 when, at 01:47, a stewardess reported a fire near the aft cabin passenger door. The crew started a descent from FL300 and were cleared to descend to 4000 feet. Following a mayday call at 02:03 nothing more was heard from the flight. The aircraft crashed in a level rocky area at an elevation of 3000 feet and burst into flames.

PROBABLE CAUSE: "An in-flight fire in the cabin area which, through its intensity and rapid extension, resulted in panic among the passengers and smoke in the cockpit, eventually incapacitating the flight crew. The cause of the cabin fire was not determined."
It was considered that the origin of the cabin fire could have been a leaking gasoline or kerosene stove, carried aboard by Haj pilgrim passengers. Pressure differential could have caused a poorly sealed gasket to leak fuel.
A second possibility is an electrical fire, but the rapid extension of the fire was considered difficult to explain because of the electrical circuit protection devices of the Boeing 707. Sabotage was considered as another possibility, but no evidence of use of an incendiary device was found.

Classification:

Loss of control

Sources:


Photos

photo of Boeing 707-340C AP-AWZ
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Jeddah-King Abdulaziz International Airport to Karachi International Airport as the crow flies is 2860 km (1788 miles).

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Boeing 707

  • 72nd loss
  • 858 built
  • 3rd worst accident
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 Saudi Arabia
  • worst accident (at the time)
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