tinyclark

It is named the Pressure test fitting in the TO and I can't find any real info on using it. The old 1C-130B-2-10 shows the fitting, but the book is not specific about hooking it up. This was back in the day when knowledge was handed down. It says to use an air cart though.

"d. Start the MA-1A and pressurize the bleed air manifold."

Suffice it to say, it was probably put there for manufacturing purposes to check the aircraft before any power was put on it to run the GTC.

Try the rear beam of the Center Wing at right Wing Station 10, Water Line 264. If not there, contact Foreign Military Sales at Warner Robbins.

Where is it located?

Still hard to troubleshoot with an unknown system.

On 5/2/2023 at 12:45 PM, Spectre623 said:

Do you have a date on that TCTO Tiny? Spent 3 years on the A at Sewart AFB TN and only remember the term synchronizer.

As they're such old TCTOs, I don't have that info.

Year and tail number, type of autopilot. please.

What parts have been changed? What has been checked?

The 130H-4-15-1 shows support equipment IPB.

Support equipment is listed in the 130H-2-2.

I would ensure the 28V is getting to the power supply on pin B, as well as the ground on pin A, which is aircraft bonded.

Also, the ground for the transmitter and indicators are tied to one aircraft ground. Since all four are affected, I would insurepower is good to everything before I started with anything else.

While I appreciate the kind input of my helpfulness, it has been a while. Definitely do what n1dp said, check the altitude inputs. Antenna lines have cause very weird problems. They can be checked using a RFLTS. If the problem seems at exactly 10k feet, it really would be an altitude malfuntion. I need to look at some old books to see if there is a missing signal on one of the inputs that would cause this.

Merry Christmas. I stole the pic too!

Tiny

On 10/29/2022 at 4:53 AM, Metalbasher said:

Anyone know the approximate timeline the USAF transitioned to the two blade antennas mounted on the vertical at the approximate same VOR antenna location?  I think the mid to late 1990s but not sure.

Thanks

Scott

Late 90's or early 2000's. I know it came out when I was in Alaska, 98-01. There wasn't a TCTO issued for it that I know of, it was just used as an alternate antenna. It was mounted in the same holes that the old antenna used. It got rid of the corrosion problem caused by the copper band on the old antenna mounting surfaces. 

Really glad you solved this one. I found out the aircraft was at Youngstown from my buddy, Joel. I think he may be your SCNS rep.

I really do wish I had more experience on the newer birds. I retired in 2011 before the J models arrived at Moody. 

Keep up the good work. I miss sinking my teeth into a good problem now and then.

Tiny

Yes, the synchrophaser was installed by TCTO 1C-130-936 or 1095 when the props were modified. Don't know what they had before that.

I am still looking at the books. Can't see power causing this since everything works unless the ALT Hold is set to ON.

A few more questions...

When this started 4-5 months ago, was any peculiar work done on the aircraft right before it started happening?

Were all boxes swapped between two aircraft or from supply?

Was the Acceleration sensor changed out? Doesn't that feed both systems? 

Yes, that antenna is no longer available. The aircraft was modified using two blade antennae. The information is in 1C-130H-4-34-1, section 4 Fig 9. It may be easier to get some from a retired aircaft in AMARG. If you need more info, let me know.

You would have to get that from WR-ALC at Robins AFB, GA.

I am going to ask some stupid questions because I only worked E's, 74 H's, early gunships and MC-130E's. 

Does the altitide signal for the ALT Hold come from a Air Data Computer? Are there two? I reallyneed to know where the ALT info comes form going to the Flight Director.

The info in the GS-34 is marginal, and I couldn't find anything in the old H-2-13. All of my material is at least 22 years old as well.

After looking for info, I remembered how lousy the books really were.

What base are you at with this Herk?

Tiny

Let me get this right, so I might be of help. The command bars on the ADI start floating around only if the A/P Alt Hold is engaged? Otherwise, they work as they should?

Can I get the tail number?

Tiny

Actually, the ring segement would probqbly be right under the panel, though I don't know why they would mark it there.

The front of the nacelle went to FS 399.05 on A models and 389.05 on E models, so 10 inches shorter.

Someone was screwing around, This goes on the ring segment at FS 165. Funny they taped over it when they painted at depot. "It ain't my job to remove it."

It's been a while since I've been on an airplan, but I swear I've seen them before on the overhead panel.

Tiny

On the overhead panel? About where? Picture?

On 5/30/2022 at 5:09 PM, Roadrunner said:

Unless you’re building one from the 1960s-80s when they had them installed.  

Maybe check the Lockheed News issues for better pics. 

On 5/29/2022 at 12:17 PM, talons1555 said:

Tiny, Due to boredom, went searching via images for tail numbers with the ODS installed.

69 5820, 5823, 5826, 5827, 5828, 5830, 5831, 5832, 5833

65 0962,  0968, 0974, 0982, 0983, 0984, 

66 0221

Those are the ones I could find, so suspect most of the HC-130 fleet had them.  Although I do remember some didn't since we used the ods to remove benson tanks and can remember from that.

Gary

Always goes to show you how accurate the books are.

Good luck, I found nothing in the books. If it were an accurate model, it wouldn't have them since the system was removed many moons ago. You may have the best pic of them. That tail # isn't even on the list of the seven aircraft that was supposed to have it, according to the GS-25-1.