The Transportation Safety Board says a helicopter pilot killed in a crash in British Columbia almost two years ago was sick in the days leading up to the accident and reported 含羞草研究社渟hivering uncontrollably含羞草研究社� before the aircraft went down.

The board含羞草研究社檚 report on the November 2022 crash says the helicopter was on a surveying flight near Kitsault, B.C., in the province含羞草研究社檚 northwest when the pilot reported being 含羞草研究社渦nwell含羞草研究社� about an hour and a half after takeoff.

The report says the helicopter crashed into a 含羞草研究社渉eavily forested mountainside,含羞草研究社� killing the pilot and destroying the aircraft.

The safety board says investigators couldn含羞草研究社檛 含羞草研究社渄etermine the full context含羞草研究社� of the fatal crash because the helicopter did not have flight data recording equipment that captures images and audio from aircraft cockpits.

The report says the Airbus helicopter was fitted with a tracking unit, but the data it records was 含羞草研究社渢oo sparse含羞草研究社� to figure out the aircraft含羞草研究社檚 含羞草研究社渆xact manoeuvring含羞草研究社� in the minutes before it went down.

The board含羞草研究社檚 report says the pilot was over 65 years old and had up-to-date medical certification and though he含羞草研究社檇 had past troubles with vertigo, the feverish symptoms and shivering during the flight suggested he 含羞草研究社渓ikely experienced a degree of incapacitation含羞草研究社� before the crash.

The Transportation Safety Board has previously recommended that flight data recorders be required on commercial and private aircraft where they are not required now.

含羞草研究社淭he benefits of recorded flight data in aircraft accident investigations are well known and documented,含羞草研究社� the report says, adding that the recommendation for 含羞草研究社渕andatory含羞草研究社� installation was made after a fatal airplane crash that killed four people in 2016.

Transport Canada agreed to the recommendation, but there have been 含羞草研究社渓engthy delays in implementation,含羞草研究社� the board says in its report.

It says Transport Canada has pushed back its timeline to publish details of possible regulatory changes until 2025 for 含羞草研究社渁dditional analysis.含羞草研究社�