Quite unfortunate that the CV/FDR on the Cougar 92 quit minutes before the crash. I would assume that the electrical bus the recorder was on was shed due to loss of generators. Questions:
1. What electrical bus(es) provide power to the combined recorder?
2. What failures would shed that bus? Are they automatic or manual?
3. Where are the generators on the S-92? Assumption would be one on each engine and one on the transmission.
4. Is it an incorrect assumption that other recording devices (HUMS, QAR, etc) are on less reliable power sources than the CV/FDR?
Maybe the design should be altered to put the recorder on a battery backed up bus to insure the critical data is not lost in the future.
The Sultan