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Old 21st Mar 2021, 12:13
  #43 (permalink)  
Centaurus
 
Join Date: Jun 2000
Location: Australia
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I remember a different kind of incident though on a classic, where the battery would not charge.
The classic of all time (no pun intended) was the Garuda 737-300 that ditched in a river in Indonesia in January 2002 in an all flaps up configuration after flying into a 75,000 ft super-cell CB.
:
As the Boeing 737-300 aircraft was on approach to its destination, the pilots were confronted with substantial thunderstorm activity visible ahead and on their onboard weather radar.[2] They attempted to fly between two intense weather cells visible on their radar. They later entered a thunderstorm containing heavy rain and hail. About 90 seconds later, as the aircraft was descending through 19,000 ft (5,800 m), both CFM International CFM56 engines experienced a flameout, which resulted in the loss of all generated electrical power.

Both engines were set at their flight-idle power setting before flameout occurred. The crew tried unsuccessfully to restart the engines two or three times. They then tried but failed to start the
auxiliary power unit (APU), at which time total electrical power loss occurred. (During the later investigation, the NiCd battery was found to have been in poor condition due to inadequate maintenance procedures.) . As the aircraft descended through the lower layer of clouds at approximately 8,000 ft (2,400 m), the pilots saw the Bengawan Solo River and decided to attempt to ditch in the river with the flaps and gear retracted. The ditch procedure was successful, leaving the aircraft settled down on its belly in the shallow water, with the fuselage, wings and control surfaces largely intact. There was no fire.

The investigation revealed a poorly maintained radome that resulted in a very much reduced range. When the crew tried to start the APU following the double engine flameout due rain ingestion, the battery failed simultaneously which left the crew with loss of all electrics in IMC.
The standby artificial horizon failed due loss of electrical power but what saved the day was the aircraft broke clear of cloud just as the standby AH gave up the ghost and toppled. The ditching at 180 knots was well handled and everyone escaped apart from one unfortunate cabin attendant trapped down the back when the floor collapsed.

Sounds like a good simulator exercise designed to sort the men from the boys! Even the most brutal of simulator instructors would never dream up such an unlikely combination of failures in IMC and heavy turbulence. Yet it happened for real that day.

See full report: https://en.wikipedia.org/wiki/Garuda...ral%20injuries.

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