Night Pilot.
Your assumption about the UK industry is a guess.
Did'nt think there were any B412's in the UK???
Maybe the GOM [we called in the FGOM] when I was in MC, has changed a little, but the operation of the mediums then was quite normal, no high pressure "Get it done Attitude".
We called our SK76's "Medium" class of helicopter rather than "Heavy"....
Presently we utilise three limitations when operating 412's as far as AUW is concerned. Our Take Off Weight must be the lessor of:
1. MTOW [11900 lbs]
2. WAT Chart [Limitations Section of the RFM]
3. OEI capacity at MC or 30 mins to maintain zero % climb gradient at 500 agl [VFR]..... or 1% climb gradient at LSALT in IFR.
There the "Legal" limitations....
Inhouse ones regarding limiting deck take offs to OGE weights [as previously discussed] are based on a common local industry standard. Both client and operator [Government folk are not in this loop] support this standard.
Depending on what model of 412 you have the pleasure of flying.....in an SP, the WAT Chart would not allow you to take off at 90 F at full Max Certificated weight...I assume your meaning MTOW.....if your in an EP, then your smiling all the way home.
Last edited by Old Man Rotor; 13th May 2003 at 23:04.