Some problems in flight

Shermann · Post by **Shermann** » Sun Nov 14, 2004 8:03 pm

"Hi Guys !! Ihave flown twoflights from eham to kord. In both flights i had the following problem. The first flight while i was flying over ireland costa to enter the NAt for that day, i heard a strange noise from the engine, like they have lost power . In the speed indicator the white arrow went down to zero and the whire and red arrow followed it, IThe plane stalled so i ponted nose down and the arrows came back but at the same time there was an overspeed warnin message. So i pulled up and extend airbrakes and the both arrows still at 110 and the plane stalled again. I needed over 15 min to stop the plane in right flight asset. A warning light of LOW n1 lited. Today , the same flight, this time i was descending to kord from Fl370 to Fl180 after a whil?e all the same mess. The altimeter indicated a wrong altitude it showed Fl440 but actually i was 230 and i was struggling with the plane to avoisd stalls an over speed. Another time LOW n1 lited on. What can happen to the plane? Then during landing all the doors opened. And even pushing Shift+E only the main door closed the other kept opened. Of course before flight i turned on windows heat and probe heat. The tempetaru was under -37 so no problem for fuel icing. But of corse at that temperature there wouldn't be problem for ice. And in any case i turned on the heating deveices. But for 10 min i had to fight a lot. Fortunally i was 60 Nm to Kord. The landing was perfect without any problems so goods are not lost [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]"

Tsuru · Post by **Tsuru** » Mon Nov 15, 2004 2:19 am

"Do you fly on IVAO using the IvAp client? (In that case: were you the PO604 that was chasing me? [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img] [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] ) I had exactly the same occurence on a tryout flight for IvAp in the F100 a few days ago and yesterday on my way from EHAM to KORD. I found that the barometric pressure in IvAp has a nasty habit of going from the real value of about 1030mb to ~700mb (KORD) and ~300mb (EHAM) in no seconds. To me, both times this happened around EHAM and KORD under 1500ft AGL, so the effect of decreased pressure on airspeed was less severe than it would have been on altitude. The first time it ever happened to me in the Fokker I was just taking off from EHAM 24, and as I climbed through 500ft the altimeter went to 34000ft and the airspeed to zero. Naturally I the stick shaker went off immediately and the poor little Fokker hit the ground at climbout attitude and with almost no forward speed. [img]style_emoticons/<#EMO_DIR#>/glare.gif[/img] The second time was yesterday in the 747 first at FL360 I noticed the low N1 lights had come on during the last 500NM of my trip, but didn't think anything of it as the plane was operating normally. Then, as I was over the outer marker the altimeter jumped to 12000ft and the airspeed decreased by ~30KIAS, so I opened the throttles some more and lowered the flaps to 30 to keep from stalling. As I passed over the threshold the altimeter jumped back to about 800ft and the airspeed increased again, launching the plane into the air as is it was hit by an incredibly powerful gust. I landed nevertheless about halfway down 09R, contemplating what the hell just happened. Then the altimeter jumped back again to 12000 and I pressed ""B"". To my amazement the altimeter barometric pressure setting indicated about 700mb (2100InHg). [img]style_emoticons/<#EMO_DIR#>/huh.gif[/img] I think this is probably caused by IvAp incorrectly interpolating the barometric pressure at different airfields, resulting in such extremely low values. Here is how you can solve it: In the FSUIPC settings window look for the setting that allows you to limit the change in barometric pressure to 1mb every 5 seconds and enable it. I have yet to find if this will solve it as I haven't flown yet with IvAp and this setting enabled, but I have a sneaking suspicion that it does [img]style_emoticons/<#EMO_DIR#>/wink.gif[/img] Quick note: your pitot heaters should ALWAYS be on!"

Shermann · Post by **Shermann** » Mon Nov 15, 2004 7:21 am

Yeah It was me and for ur fault i had to change my Callsign [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img] yes i both flown on Ivap and of course it is the frst time it happens. Actually it happened just what u described. Well i will ry what u said but actualy i am not sure to be able soon [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] Anyway i would like u to inform me if that works when u will try it [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] Thank You Alfredo

Tsuru · Post by **Tsuru** » Mon Nov 15, 2004 8:46 am

"I'm not at my own machine right now, but I'll post a more instructive reply with screenshots of the settings window to show you how it's done tonight. [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img] You'll know if it works when you do your next flight on IvAp [img]style_emoticons/<#EMO_DIR#>/happy.gif[/img]"

Shermann · Post by **Shermann** » Mon Nov 15, 2004 4:05 pm

[img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] Ok Thank You Tsuru [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img] I will look forward everything will work good

Tsuru · Post by **Tsuru** » Mon Nov 15, 2004 5:31 pm

Here you go:

Shermann · Post by **Shermann** » Tue Nov 16, 2004 7:28 am

Good Thank You [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] Hope it will work [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img] As the problem is that after a flight of 8 hours u canhavea crash due to structure overstress and it is not so nice <!--emo&

-->[img]style_emoticons/<#EMO_DIR#>/mad.gif[/img] [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]

Tsuru · Post by **Tsuru** » Tue Nov 16, 2004 8:25 am

"I think the crash dynamic in FS is so rediculously unrealistic I switched it off altogether [img]style_emoticons/<#EMO_DIR#>/happy.gif[/img] Crashes due to other pilots in IVAO, idiotic wind/baro pressure changes at altitude, uneven runways (SIN anyone?) are a thing of the past now [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img] Who needs crashes anyway? It's not like I'm so thick I land at over 1000 feet/minute, now is it [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img]"