Forum: F-16 Procedures

We have a block 40 CCIP jet that has had an ECS loud problem for about 2 months. Every pilot comes back and complains about not being able to hear anything while in the air. Nothing that the ECS tester points out is bad and during a normal engine run (including burner) is pointing to anything. It doesnt get loud until after pilot takes off. We have changed all parts related to this including H/L stage, vapr, dpt, convertor tranducer. Put in a new seal, and RTV around the duct behind the seat. Still doesnt help. Has any E/E guys had this problem and have any ideas.

Throttle, RPM and altitude settings dont matter though some pilots say it gets louder as throttle is increased. This varies from pilot to pilot.

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Why aren't you posting this request for help on the Falcon Hotline CoP where there are people who could help you? I assume that you have exhausted every avenue for help such as AFETS, CETS, and Lockheed Product Support if you are posting to a public forum. If you have not tried these avenues for relief, you should not be posting F-16 maintenance problems to a public forum.

Best Regards,

I agree Joe (no offense to pointyheadking) but Joe makes a great point, the real answer will be found at one of those resources, not here.

Well when you turn the air on high, more air flows from the engine's compressor bleed system, and sucks all of that loud sound from the engine...

LMAO

Just tell him it's the sound of freedom! Cool

If he doesn't like it, turn down the air.

Sorry, couldn't resist; I agree though, if you've exhausted your tech-data, go through official sources for trouble-shooting information.

Poll your peers, in the same career field, at other bases; specifically the same Block aircraft. Engines and system components specific to your block could affect your situation.

Keep 'em flyin' Thumb

TEG

Enthusiast Joined: Jan 28, 2006 - 10:52 AM Posts: 57

Sounds like the defog relay/3 min timer is stuck, I remember something like this at Spang one time.

dmac wrote:

Sounds like the defog relay/3 min timer is stuck, I remember something like this at Spang one time.

Bro, dun mind me replying. I guess if its the prob you mentioned then the pilots will experience hot air isn't it? IMHO,if the defog lever rigging is out then maybe it might be the cause as the flow exiting from the angle vent will be stronger resulting louder noise from ECS. When I'm doing checks, I do hear loud noise when in defog or when my lever is more to forward. It also happens when aircraft air source is operating in MAN warm when my ECS cycles.

Regards,
Simon

Enthusiast Joined: Jan 28, 2006 - 10:52 AM Posts: 57

Simon- I know very well how the defog works and the ECS for that matter. What happens after the three minutes of defog(hot air) is over,,,,cold air same defog ducts. I know wtf I am talking about.

True dat.

Best Regards,

If you can post your question on the Falcon Hotline CoP (where it belongs) I believe I can point you in a direction you may not have thought of. F-16 maintenance questions do not belong on a public forum, in my opinion.

Best Regards,

Joe, maybe he is trying to save time and avoid some of the worthless paper trails. Sometimes it is quicker and less painful to ask on a open forum. The ECS system is hardly Secret.

dmac wrote:

Simon- I know very well how the defog works and the ECS for that matter. What happens after the three minutes of defog(hot air) is over,,,,cold air same defog ducts. I know wtf I am talking about.

Dude, u dun have to get so agitated over this matter rite? Someone over here is just trying to help.

Enthusiast Joined: Jan 28, 2006 - 10:52 AM Posts: 57

Joe- I'll be ready for a job in three years! I am back at Cannon workin C-130's....... Living in my hometown Muleshoe, Texas again!!!

So Pointyhead did the jet get fixed???

Haven't heard, and no post on the Falcon Hotline CoP yet.

Best Regards,

Been off the jet for a while, but I'm trying to remember the ECS system. The only thing I can think of is the ejector shut off valve that makes it so damn hot in the wheel well during the summer and so nice and toasty in the winter. If I remember right, it's open with WOW or landing gear down, can't really remember which, to create air flow across the heat exchanger. Maybe the probelm lies in the ECS bay. Good luck!

Enthusiast Joined: Jan 28, 2006 - 10:52 AM Posts: 57

Maybe it lies in the ECS bay? Man, that sure narrows it down.

The ejector valve just cools the pri/sec heat exchanger on the ground. And if it is broke/stuck open in the air it really does'nt hurt a thing.

This sux for me,,, I am stuck on C-130s... Sad

Forum: F-16 Procedures

ECS Loud Problem