Input (grade 13): Air New Zealand Flight 901 (TE-901) was a scheduled Air New Zealand Antarctic sightseeing flight that operated between 1977 and 1979, from Auckland Airport to Antarctica and return via Christchurch.
Output (grade 8): Air New Zealand Flight 901 was a scheduled passenger flight that crashed into Mount Erebus on November 28, 1979. It was a sightseeing flight to Antarctica that should have flown from Auckland, New Zealand, and back.