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Piloting, Owning and Operating a Beech Bonanza A36 - www.gotoair.com

This is the story of owning and operating a 1993 Beech Bonanza A36 in the UK and some of its adventures and flights. I have owned this plane for over six years now.

Friday, October 05, 2012

 

Fuel Flow Report

OK I took G-FOZZ to Multiflight in Leeds have its fuel flow reset due to using too much fuel. It turns out the fuel pressure was too low and increasing it to the settings supplied by TCM has increased the fuel flow some more.  The benefit is higher manifold pressure available but the it is now even further away from the book figures.  Multiflight have now emailed TCM to ask them what we should do next.

Here is the report:


Date:     5th October 2012


Aircraft Regn:     G-FOZZ

Aircraft Type:     Beech Bonanza B36

Engine Type:       Continental Motors  IO-550B(6)

Engine S/No:       675814


INSPECTION REPORT


Please find attached the findings we achieved when carrying out the fuel system set-up.  Figures recorded at initial run-up prior to any adjustments:-

O.A.T:. 51 deg.F.

STATIC: M.P. 27.5

UNMETERED

RPM              PSI               GPH              MP
1000             11.5               5.0             13
1300             14.5               7.25           14.5
2000             28.75            14.75            19.25
1550             23.75            25.0             26.5
650                9.75             3.75           13.75

METERED

2550             13.5 (Nozzle) 25.0             26.5


Fig.204 Graph checked.  Metered should be 15.9 P.S.I.

Two separate adjustments were made to achieve 15.9 on the pump by-pass screw, but the fuel flow was increasing with every adjustment which is opposite to what we are trying to achieve, i.e. lower fuel flow.

RPM              PSI (Nozzle)            GPH              MP
2550                  15.7                  26.5             26.5

We left the ‘set-up’ at that, due to the extent of the fuel flow increase.



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