Any info on best economy figures for cruise speed & fuel consumption for the T303 at say 65% power (LOP & ROP)?
A colleague who flew Cessna twins back in the day when they were much younger had an interesting reminiscence. An owner decided to trade up from a Pressurised 337 to a 340, but after six months regretted it. He claimed the P337 was faster, cruised higher more comfortably and, what most would agree on, was much more versatile in handling short or unimproved strips. The mission had remained the same, 500nm sectors IFR around Europe. This owner/pilot described the P337 as a real pilot’s airplane. The 340 also could end up with a relatively skinny payload when tanks were full.
Apparently a few operators tried to put the 340 on a UK AOC, but never managed to satisfy the performance requirements – this is likely to be the early 285 HP engine version. Alternatively it may be due to the TODA at their bases, typically around 900-1100 metres.
Does anyone have real world mass data for a 340? Especially the empty mass, MTOW, maybe MZFM?
casm wrote:
Any info on best economy figures for cruise speed & fuel consumption for the T303 at say 65% power (LOP & ROP)?
I use the rule of thumb formula HP * % power *0.078 which usually works for normally aspirated engines, on turbocharged engines I would add 1-2 USGPH to get an estimate.
It was advertised as 200 knots at FL200, but at FL100 presumably the laws of physics apply and 160KTAS might be realistic, using 27USGPH?
