C-130 Technical
1,322 topics in this forum
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GTC problems 1 2
by mike in ca- 25 replies
- 14k views
I am having problems with a GTC not running without a boot pump. After the boost pump is turned off, about the time the manifold pressure gauge hits 5lbs the GTC dies. With a boost pump on the GTC will handle the load of the ATM and both AC packs on, the GTC will die with no load also as soon as the boost pump is turned off. I have checked the cracking pressure and it is at 61lbs, the armpit valve is working as it should. The gtc fuel filter was replaced and still no difference. Anyone ever had this problem?
Last reply by Jbas130, -
- 0 replies
- 660 views
If any AE 2100D3 engine prop balance sometimes detected and didn’t do any rectification jobs. What are the problems will be happened? Please give me Any practical or theoretical idea. Thanks
Last reply by sharif101, -
- 1 reply
- 677 views
Hello Herky people, I want to know how to use exterior lightning on the ground (day/night),in flight(day/night) depending on weather condition. thanks
Last reply by NATOPS1, -
- 8 replies
- 3.9k views
HI GUYS. VERY GOOD EVENING. IM FACING A DEFECT NO 1 ENGINE RPM INDICATOR NIL INDICATION DURING START UP ( FROM 0% DIRECTLY JUMP TO 22% RPM) WITH OTHERS ENGINE INSTRUMENTATION NORMAL. WE ALREADY DID THE RECTIFICATION BY SWAP AND REPLACE INDICATOR, REPLACE ECTM CONVERTER REPLACE 3 X TACHOGNY REPLACE VALVE HOUSING WIRING CX ON THE SYSTEM DO YOU GUYS HAVE ANY IDEAS ON THIS DEFECT??
Last reply by M Ahsanul Haque Mukul, -
- 1 reply
- 848 views
KC-130T buno 313 and up, Having an issue where the CARA will lose altitude intermittently while in flight. Sometimes it will happen on takeoff or descent other times it will happen while cruising. (Aircrew will sometimes associate it with nav select switching but cannot be duplicated) CARA will fluctuate under 50 feet while airborne causing GPWS to go off for low altitude sometimes resetting the breaker will return it to normal other times if terrain changes it will return to normal on its own. Have replaced pilots indicator, CARA R/T and antennas but gripe still remains. Also I have shot the cables with a TDR and they seem normal. Any insight would be greatly apprec…
Last reply by tinyclark, -
- 3 replies
- 1.4k views
Hello all, Working on a KC-130T-30 and having an issue with the #2 and #4 generators holding a load. Replaced multiple components: #4 gen contactor, one of the bus tie contactors, #2/4 GCP, #4 voltage regulator. Generators will power on and give good freqs and voltages but when switched to on will not carry essential bus or a heavy load. Occasionally we can get either to pick up a bus or remove applied loads and slowly turn items on till the gen out light illuminates and freq and volts are zero. Have verified wire continuity and voltages while gen is operating normally everything checks good. When gen is in a failed state the normal voltage at the voltage regulator …
Last reply by Fargusmcg, -
- 8 replies
- 2.4k views
Hello T56A -15 power plant Pneumatic Expertise T56A-15 (C-130 E model) engine can provide approximately 155 pounds of air flow per minute at 635F and 125 pounds per square inch of gauge pressure. Bleed manifold pressure gauge is mounted in F/deck (direct gauge) display approximately 70 PSIG .where remaining pressure of the engine flow? Best Regards Munir Abbasi Home of Hercules Pakistan
Last reply by munirabbasi, -
- 4 replies
- 2k views
Hello Herks Hydra Expertise! 1. It has mentioned Intermediate level maintenance T.O of EDP NYAB at 3000 RPM , flow rate of pump is 6 GPM min, where pump is designed 10 GPM at 3650 RPM . when both the pumps (NYAB) In Aircraft utility system working parallel max flow ie 16.93 pressure drop to 1800 psi. how we can calculate flow rate (GPM) of both NYAB pumps when they are working parallel at 3000 RPM? 2 Just assume that aircraft hydraulic utility system ,when No 1 EDP pressure is 3000 psi and No.2 EDP pump pressure 3100 psi how the pressure act passes thru passage of single pipe after isolation check valves ? Best Regrads Munir Abbasi Ho…
Last reply by munirabbasi, -
- 4 replies
- 1.4k views
Hello Pneumatic expertise Identify and purpose of mark image Munir Abbasi Home of hercules Pakistan
Last reply by NATOPS1, -
- 6 replies
- 3.7k views
Hi guys, just curious for knowledge sake, for 3505786-1 air turbine starter, when inflight suddenly start valve light illuminate and start valve open, will the air turbine starter crank and get damaged? Thanks.
Last reply by NATOPS1, -
- 0 replies
- 570 views
good evening to everybody im experiencing a "RADAR DEGRADED" CAUTION ACAWS on a C130J with a generic diagnostic message LPCR BIT FAIL FC3442010. The radar seems to work fine but after the power up bit completes the CAUTION pops up, troubleshooting the fault isolation for this fault codes nothing looks bad. I replaced all the LRUs and the ECBUs which apply power to the system. Any hint?
Last reply by sasa71, -
- 5 replies
- 1.3k views
Hello Avionic Wiring Expertise! Kindly see yellow marked column of image and explain with technical reference Best Regards Munir Abbasi Home of Hercules Pakistan
Last reply by munirabbasi, -
- 4 replies
- 1.4k views
whenever i am running the APU, the fire warning light on both master warning light and the APU T-handle light come up and remain steady once i put ON the air condition. however, if the air condition is not running, the operation of the APU remains normal. i have tried to check for bleed leaks from he APU to the manifold and no leak was found. pls i need urgent help on what next to look up to pls
Last reply by NATOPS1, -
- 8 replies
- 1.8k views
Hellow friends and brothers i just wanted to know what are the reasons behind the generator shaft bearing(only front) failure in C-130B ac with T56-A-7B engine.
Last reply by Kamrul Ahsan, -
- 1 reply
- 812 views
I have Prepar 3- 5v flight simulator and have watched Utube videos on start up of the C-130 but could not find an actual written check list procedure as to how to start the 4 engines. Where can I obtain a written list to preform this or any other lists for the C-130? Thanks! email: turner75ac6@gmail.com
Last reply by hehe, -
- 7 replies
- 9.9k views
During the FCF of 382G “CIVIL†airplane-, The Auto pressurization mode fails to pass the “pressure controller differential valve checkâ€. Safety valve was controlling the differential pressure before or might be at the same time of pressure controller. Safety valve required to remain closed during this check. Safety valve cracked to open at 14.8 in/hg and will maintain 14.9 in/hg; while pressure controller (when isolating the safety valve) was taking over at 14.9 and maintaining 15.0 in/hg. All pneumatic lines checked, 2 pressure controllers 2 safety valves and 2 outflow valves had been changed to find a proper matching setting with no effect. Settings of…
Last reply by smax64, -
- 0 replies
- 696 views
Hello herks structure expertise If center wing is replaced with the wing of 500HRs EBH Elapsed time What will be EBH of of the aircraft??? Best Regards Munir Abbasi Home of hercules Pakistan
Last reply by munirabbasi, -
- 5 replies
- 1.3k views
Hello Herks Hydra Expertise! B model aircraft,During Retraction cycle of landing gears with UT system (in-flight) low pressure WX light of UT suction boost pump was Flickered and extinguished when gears were up and locked. Manufacture of Suction pump is able corporation sealed type and without cooling FAN and also without modification (C-130E airplanes AF72-1288 and up and C-13OH airplanes have a suction boost by-pass circuit. The by-pass line contains a restrictor and a check valve that will continuously circulate one GPM of fluid, from the suction boost pump back to the booster system reservoir, to provide a cooler operating boost pump). FE Said operation of…
Last reply by munirabbasi, -
- 4 replies
- 1.1k views
Hello C130 professionals! In an E Model Hercules, Flight Director Flag (FD flag) came in view on Co Pilot side PFD on ground during normal checks. Against the defect, all associated LRUs were replaced/swapped with serviceable ones. Even the PFD was swapped with pilot side, yet the flag did not disappear. Continuity of wiring was also double checked and was found SAT. No visible issue was observed yet the flag did not disappear. Autopilot engages without any defect and is working fine. Any ideas as to what might cause this or any previous experience, please do share. Thanks!
Last reply by munirabbasi, -
- 3 replies
- 1.1k views
Hello Fire extinguisher Squib Herks expertise. Life cycle of C-130B/E model aircraft Squib is not mentioned neither TOs 1C-130H-2-26JG-20-1 nor IC-130B-2-10 and IC-130B-2-7. but life of squib is mentioned in Service news in Vol 18,no1 which is not applicable in our fleet. any T.O which provides guide line for life of squib ,installed on Hercules aircraft. any expert opinion Munir Abbasi Home of Hercules Pakistan
Last reply by munirabbasi, -
- 4 replies
- 1.5k views
Hello Herks Hydro Expertise! Retraction cycle Timing of Right landing ( B model aircraft) is exceeded from prescribe given time sec ie ,38 seconds with UT hydraulic system but when retracting the landing gear with AUX hydraulic system on ground timing is with in limit ie 17 second . We have replaced right side of landing gear, the flow regulator, controllable restrictor valve, one way restrictor, hydraulic motor ,gear box,landing brake lock and HI.Torque two speed valve but defect was repeated again and again in every sortie. any expert opinion Best Regards Munir Abbasi Home Hercules Pakistan
Last reply by munirabbasi, -
- 3 replies
- 1.1k views
Hello brother peace be upon you. i am presently working in C-130B ac. For last few days, we are badly facing lots of problem regarding TCAS system. We couldn’t find the solution till now. Therefore, i thought to ask for the expert opinions in this forum. Problem : In Tcas system in flight, the traffic positioned in above, maximum time shows opposite direction incl its distance, for few days we are also didn’t found traffic in specific headings. Today for instance, one single traffic showed in 3 position. We have changed the TCAS processor but problem remained same. Again sometimes traffic shows actual position. Its getting worse day by day for…
Last reply by tinyclark, -
- 5 replies
- 1.4k views
Hello World Hercules Fuel & Avionic Expertise! All 14 fuel tanks electrical pumps are operated by 3 phase power supply , controlled through 3 phase (4 poles) SWs mounted on OH Fuel control & management panel, where others Aircraft, AC pumps are controlled remotely by single wire (single pole) SWs through 3 phase relays. what is reason behind it? Best Regards Munir Abbasi Home of Hercules Pakistan
Last reply by munirabbasi, -
- 0 replies
- 648 views
hello herky guys..has anyone heard or know about training flight touch n go cant be abort? any reference about it pls..
Last reply by mrjpc130h, -
- 14 replies
- 2.8k views
On approach for landing, a C130 E Model aircraft lowers landing gears only. Flaps are already down. While Lowering the landing gears, utility pressure drops to 1375 PSI and low pressure EDP light of both Engines and low pressure light of Utility Suction Boost Pump illuminated. As soon as the Landing Gears were extended completely, system pressure came back to Normal with all conditions within limit. To what component can this occurrence be attributed? Can it be the failure of Utility System Accumulator, Suction Boost Pump or EDP? And if we were to attribute this to Accumulator, is it possible for an Accumulator to suck hydraulic pressure from pressure line to fulfill its …
Last reply by munirabbasi,
