Zaren Posted May 11, 2018 Share Posted May 11, 2018 Hello guys... I need some information here. Is there any limitation for xcover cut. Example xover cut tit is around 880tit but stabilize at 825tit...is it OK or not Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted May 12, 2018 Share Posted May 12, 2018 Only limitation is TIT after light-out must be 800°C to 840°C. There is no limit for before light out, meaning TIT before could be 1000°C or 700°C as long as it corrects to the specified range when the light goes out. All it means is the fuel control is very rich or very lean at that position in the schedule. Quote Link to comment Share on other sites More sharing options...
Zaren Posted May 13, 2018 Author Share Posted May 13, 2018 So that's mean it will not cause any effect during flight. Am I correct. It's doesn't matter the TIT cut as long as the TIT stabilize between 800 to 840 TIT Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted May 13, 2018 Share Posted May 13, 2018 correct. do a rich/lean check to be sure that the fcu schedule is within limits: not to exceed 100°c rich or 70°c lean Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted May 14, 2018 Share Posted May 14, 2018 22 hours ago, pjvr99 said: correct. do a rich/lean check to be sure that the fcu schedule is within limits: not to exceed 100°c rich or 70°c lean Agree the correction does not have a specific limit but the FCU has a rich/lean limit as PJVR99 stated; 880 to 825 is good to go. Quote Link to comment Share on other sites More sharing options...
Moeed hassan Posted October 12, 2018 Share Posted October 12, 2018 On 5/12/2018 at 7:10 AM, pjvr99 said: Only limitation is TIT after light-out must be 800°C to 840°C. There is no limit for before light out, meaning TIT before could be 1000°C or 700°C as long as it corrects to the specified range when the light goes out. All it means is the fuel control is very rich or very lean at that position in the schedule. Pjvr99.....is that compulsory for tit to correct back aftr correction light is off..... I means if cut rise condition occures aftr correction light goes off... IS THAT CORRECT OR NOT??? Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted October 13, 2018 Share Posted October 13, 2018 Do you mean a rise from 'before light out', meaning less than 800 and correcting to 800 to 840 after light out: yes, it is good. The ONLY, let me repeat that, ONLY requirement is a correction of 800 to 840. There is the rare occasion when the mechanical and electronic schedules are the same and no correction occurs. If this happens you need to do a proper TD system check. Quote Link to comment Share on other sites More sharing options...
Moeed hassan Posted October 14, 2018 Share Posted October 14, 2018 Ha ha... Sir i m talking about correction of tit on reaching cross over aftr correction light out..... I agreed it should remain between 800 to 840..but my question is IS IT GOOD OR WRONG IF WE FEEL THE CUT RISE OF TIT WHEN CROSS OVER POINT ID OCCUR.... Regards. Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted October 14, 2018 Share Posted October 14, 2018 There is no wrong TIT before correction Quote Link to comment Share on other sites More sharing options...
Moeed hassan Posted October 15, 2018 Share Posted October 15, 2018 Sir if your TEMPERATURE CONTROLLING check is ok then will u bother CUT BACK on cross over??? I neans if there is no cut back but temp controling is ok then what will u say??? REGARDS Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted October 16, 2018 Share Posted October 16, 2018 I will say there is nothing wrong, nothing to do, nothing to fix - system is operating within specification. mechanical fuel schedule and electronic fuel schedule are perfectly matched Quote Link to comment Share on other sites More sharing options...
Moeed hassan Posted October 16, 2018 Share Posted October 16, 2018 Thats it....... And actually my point was this.... Thanx dear and REGARDS... Quote Link to comment Share on other sites More sharing options...
Ahmer Posted October 18, 2018 Share Posted October 18, 2018 Ur x over TIT is correct & no need for any further check.its ok Quote Link to comment Share on other sites More sharing options...
sharif101 Posted February 1, 2019 Share Posted February 1, 2019 X-over cut back TIT within 15-60°c. Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted February 2, 2019 Share Posted February 2, 2019 Cutback is a misleading term, as the TIT before correction may be lower than corrected TIT. For example, TIT before light out may be 790°C and 835°C after light out. There was an increase rather than a cutback. AGAIN, there is NO limit for TIT before light out, only 800 to 840 after light out. 1 Quote Link to comment Share on other sites More sharing options...
Ahmer Posted February 4, 2019 Share Posted February 4, 2019 On 2/1/2019 at 11:17 PM, sharif101 said: X-over cut back TIT within 15-60°c. This is correction of TIT 15 to 60 °c not a cut back its miss consecpt.as per 1c-130B-2-4CL-1. But new JG 1c-130H-2-71JG-00-1 having no 15 to 60°c limit its only 800 to 840 limit of cross over TIT no correction mentioned here. 2 Quote Link to comment Share on other sites More sharing options...
AMPTestFE Posted February 5, 2019 Share Posted February 5, 2019 But, if you end up operating that engine in NULL, it WILL overtemp, maybe over-torque. Like always, if operating in NULL (or not), you must very carefully watch for this when advancing the throttles. Quote Link to comment Share on other sites More sharing options...
Ahmer Posted February 6, 2019 Share Posted February 6, 2019 21 hours ago, AMPTestFE said: But, if you end up operating that engine in NULL, it WILL overtemp, maybe over-torque. Like always, if operating in NULL (or not), you must very carefully watch for this when advancing the throttles. In Null u must very careful while moving throttle because u havn't overtemprature protection. Quote Link to comment Share on other sites More sharing options...
pmostafiz Posted January 23, 2020 Share Posted January 23, 2020 On 2/4/2019 at 9:51 PM, Ahmer said: This is correction of TIT 15 to 60 °c not a cut back its miss consecpt.as per 1c-130B-2-4CL-1. But new JG 1c-130H-2-71JG-00-1 having no 15 to 60°c limit its only 800 to 840 limit of cross over TIT no correction mentioned here. Dear Ahmed, Can you send me a screenshot of new JG 1c-130H-2-71JG-00-1 having no 15 to 60°c limit its only 800 to 840 limit of cross over TIT no correction mentioned here. Please send me. We are facing problem with our engine as tit correction written 15 to 60 written on 1c-130B-2-4CL-1. Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted January 24, 2020 Share Posted January 24, 2020 (edited) This is for -7 engine This is for -15 engine Edited January 24, 2020 by pjvr99 Quote Link to comment Share on other sites More sharing options...
pmostafiz Posted January 26, 2020 Share Posted January 26, 2020 Thanks Quote Link to comment Share on other sites More sharing options...
superbigbig Posted June 10, 2020 Share Posted June 10, 2020 在-130B-6CF-1有CROSSOVER以上TIT的最小修正量是15℃,但不知道60℃的出處在哪邊?但以前學習的時候就有聽過60℃是最大修正量這個講法 Quote Link to comment Share on other sites More sharing options...
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