7 Historical

Software

Bugs

Not

this

kind

of

Bugs

CRITICAL

1) Y2K

2)

Missile

Attack

1980 - US under

attack

1983 - a Soviet

satellite

reported

incoming US

missiles

3) Ozone Layer

NASA

launched in

1978

Until 1985

undetected

hole

4)

Radiation

Therapy

- 1985-87: 100 times the intended dose

- Panama City in 2000: US company Multidata -

massive overdoses

5) Rocket

Launch

- 1996: European

Ariane 5

- 1996: European

Ariane 5

- Veer off its path

- 1996: European

Ariane 5

- Veer off its path

- Problem: Code

reuse from

predecessor Ariane 4

6) Flight

Crashes

Swedish JAS 39 Gripen fighter aircraft

1993

Sweden

Chinook helicopter

1994 Scotland

7) Orbiter

1999 -

Mars

Crashed

1999 -

Mars

Crashed

Cause:

1999 -

Mars

Crashed

Cause:

testing

can

save

money

(and

lives)