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Japan Air Lines 123

Printed page label not indexed. PDF page 86.

occurred at about this time. Great changes in longitudinal acceleration recorded for a few seconds after 1824:36.20 are conceivable to have been due to the aircraft motion. (b) Lateral Acceleration (LATG) Between 24:35.73 and 35.98, a first significant change is
Open official document at PDF page 86AAIC final report: Japan Air Lines Boeing 747SR-100 JA8119

Japan Air Lines 123

Printed page 126. PDF page 137.

estimated that such destruction of the aircraft progressed within a period as short as a few seconds. 4.1.6.7 It is estimated that the pressure in the cabin including the cockpit reduced to the atomospheric pressure within a few seconds due
Open official document at PDF page 137AAIC final report: Japan Air Lines Boeing 747SR-100 JA8119

Japan Air Lines 123

Printed page 160. PDF page 162.

thrust. A short time later, a GPWS warning sounded and the aircraft struck the sea a few seconds later. The commission of inquiry determined the probable cause of the accident was the crew ‘s failure to recognise the activation of
Open official document at PDF page 162Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Japan Air Lines 123

Printed page 177. PDF page 179.

reduce the aeroplane's rate of climb, or even to descend, as the PNF had requested a few seconds previously. The PNF had noticed the need to stabilise the flight path, and the need for moderate aeroplane handling inputs. He probably
Open official document at PDF page 179Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Japan Air Lines 123

Printed page 178. PDF page 180.

the PF's' inputs are correct. The crews' expected reaction time is of the order of a few seconds. Examination of the documentation has not brought to light a technical call-out associated with the implementation of actions. Other than during initial
Open official document at PDF page 180Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Japan Air Lines 123

Printed page 179. PDF page 181.

lift ceiling, at the Mach at which the aeroplane was flying at that time, was broken a few seconds after breaking through the propulsion ceiling. Due to its momentum, the aeroplane continued to climb: the aeroplane's kinetic energy was converted
Open official document at PDF page 181Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447