42 Years ago today: On 15 January 1977 a Skyline Sweden Vickers Viscount crashed at Stockholm, Sweden after a stabilzier stall due to icing, killing all 22 occupants.

Date:Saturday 15 January 1977
Time:08:05 UTC
Type: Vickers 838 Viscount
Operating for:Linjeflyg
Leased from:Skyline Sweden
C/n / msn:372
First flight:1961
Total airframe hrs:12208
Crew:Fatalities: 3 / Occupants: 3
Passengers:Fatalities: 19 / Occupants: 19
Total:Fatalities: 22 / Occupants: 22
Aircraft damage:Destroyed
Aircraft fate:Written off (damaged beyond repair)
Location:4,5 km (2.8 mls) NW of Stockholm-Bromma Airport (BMA) (   Sweden)
Phase:Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Jönköping-Axamo Airport (JKG/ESGJ), Sweden
Destination airport:Stockholm-Bromma Airport (BMA/ESSB), Sweden

The Linjeflyg flight originated at Kristianstad (KID) with stops at Växjö (VXO) and Jönköping (JKG) en route to Stockholm (BMA).
The aircraft suddenly pitched down from an altitude of 1150 feet, went into a vertical dive and crashed on a parking lot in the Kälvesta neighbourhood.
Because the no. 2 and no. 3 engines had been running with reduced power for a long time, the anti-ice system temperature was too low

Probable Cause:

PROBABLE CAUSE: Ice on the leading edge of the stabilizer resulted in flow separation and stabilizer stall.