Flex Jet CL-30 Questions

[frac pilot]

I am flying the 300, Part 91 and have heard rumors that Flex Jet is doing some stuff that we are considering already.

1. Are you guys doing FLEX Take offs? No, TO detent and go. The FADEC figures it out for you.

2. Do you have a fault reset guide for your pilots? No, you learn them as you go and through Field Service Reps.

3. Did you really have engine problems from transferring the bleeds to the engines and killing the APU prior to Take Off? Haven't heard of that til just recently.

4. What have you heard about 45,000 lbs MTOW? Nothing.

 

[GCAP]

Lots of bad answers here. Some acft use a TRP ( thrust rating panel ) to select "assumed temp" others use data entry on the FMS. You are not doing yourself any good using full rated thrust when it is not necessary. Rumor used to be that there had never been a failure on a JT8 when flex was used.
When using flex, full rated thrust is still available when needed.

 

[FraxJockey]

Allow me to chime in here.

First of all, the FMS inputs in our planes are for TAKEOFF/APPROACH data calculations. There is no way that I am aware of to select an assumed temp. for FLEX takeoffs. The fact our takeoff N1's rarely exceed 93% anyway is a testament to how derated these engines are. There are NO TBO's, just inspect and go. Therefore, I believe any gain would purely be in fuel if there IS a way to flex the TO. Flex takeoffs (or reduced power TO's on the older Boeings) if I remember correctly serve to extend the service intervals on the engines, since there are no TBO's then there is no point in doing so. The engine has the capability to produce 7000 lbs of thrust (flat rated at 6826 on the CL300) and has room to expand to 9000 lbs.

Fault reset guide...sure CTRL+ALT+DEL, in other words power down. If that doesn't work, disconnect the BATTS after you power down. This clears up most erroneous CAS messages.

I haven;t heard of any engine problems with reference to the bleeds.

The current limit is 39000 Ramp & 38,850 MGTOW. I havent heard of any proposed changes. Even if you took one of our typical CL300's and filled it to MZFW and then added max fuel you would only be getting 41250 (27,100 MZFW + 14150lbs. fuel). I think 45000 lbs. is overkill.