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garydpoole

Unable to select the required barometric pressure

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HiOn a recent 737-700 flight to olso gardemoen (engm) i was instructed to by atc to descend to FL5000 with QFE 26.61. This i did but unfortunately, the lowest value i seemed to be able to enter was 28.00. This meant that i constantly being told by atc to expodite my climb to 5000ft.Looking at the charts, engm is at an altitude of 675ft, hence, i set a FL5700 and all was well.However, this leads me to my question regarding the fact that i couldn't set a barometric pressure of 26.61. I usually fly with metric pressure and i believe that 26.61 converts to approx 901mbar which is VERY low. Can anyone confirm that the lowest value i can enter is 28.00 (941mbar) ?Many thanksGary

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TordI assumed ATC was using QFE (although as you state, the term "altimeter" was actually used) because they instructed me to FL5000 but were only "happy" when i was actually at FL5700 (ENGM @ 700ft MSL) - if i'm correct in assuming that QFE is the AGL elevation and not MSL (?)Gary

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Yep, just as you say I think that if one sets the QFE for a certain airport the altimeter shows 0 (zero) when standing on the ground there, whereas the QNH means that you

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