Another Tiger Moth stall/spin fatal accident. There have been a few of these in the past decade. None of these Tiger Moths had auto slats installed; their owners having removed them to decrease maintenance costs. These stall warning devices were very effective with their loud clacking as the slats moved in and out when the aircraft was approaching the stall.
In the accident concerned, the loud stall warning noise would have alerted the pilot to the impending danger in time for him to take recovery action and at least force land under control, rather than be caught by surprise and stall/spin at low altitude. As the old age says, if you think flight safety is expensive, try an accident.
How much would it cost owners of Tiger Moths to re-install auto slats as a safety measure?
https://www.atsb.gov.au/publications...r/ao-2015-150/