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Well of course the one you own:)


David Crass replied to the topic 'Turbo induced engine surging' in the forum. 16 hours 43 minutes ago

TIT is steady. I don't have an engine monitor so I don't know what EGT's are doing. I'm on the calendar at the avionics shop next month for a major upgrade which will include a JPI EDM-900, sure wish it was already installed! I've been in touch with Paul New, Tennessee Aircraft Services (awesome guy by the way, did a major repair on my Cardinal RG). He's familiar with slope controllers that are on many of the Cessna P210s. My AH1A series TIO-540 has a slope controller. Paul pointed out that when increasing power on a turbocharged aircraft always lead with mixture, then prop, then throttle in that order. I know for sure the first time I experienced surging I did not enrichen the mixture before I advance the throttle. Paul advised that would cause a very lean mixture which could contribute to the surging. In reflection, the RPMs were likely oscillating some as well, I just don't remember. My A&P did observe RPM oscillation when he induced surging on the ground run by abrupt movements of the throttle. Absent of an engine analyzer, I've mounted a GoPro to have a record of the gauges for the next test flight. Unfortunately, we were unable to fly today. Thanks for the input, I'll follow up with an update after the test flight next week.


Kristin Winter replied to the topic 'Turbo induced engine surging' in the forum. yesterday

Do you get fluctuations in the TIT or any of the EGT indications? If those are rock solid, then the issue is likely down stream of the turbo, i.e. on the induction side and not the exhaust side. Do you have an engine monitor that records?


STEVE ELLS replied to the topic 'Turbo induced engine surging' in the forum. yesterday

Hi David;
I apologize for not replying sooner. I'm digging for answers--will query some experts. I'll get back to you.


STEVE ELLS replied to the topic 'Change a Passenger Reading Lightbulb' in the forum. 2 days ago

Good, thanks for telling me.


Chris Wieczorek replied to the topic 'Change a Passenger Reading Lightbulb' in the forum. 2 days ago

Fixed it. I dropped the ceiling panel with removal of 15 screws.


STEVE ELLS replied to the topic 'Change a Passenger Reading Lightbulb' in the forum. 2 days ago

I believe the solution is to hold the body of the lamp with soft tooth pliers and turn the lens off by unscrewing it.
Let me check with an interior guru I know.


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Hartzell's 30 independent Recommended Service Facilities and Service and Support Centers are strategically positioned around the world to provide the finest propeller maintenance for the hundreds of thousands of Hartzell props in service. These propeller repair stations meet their local aviation authority's standards and Hartzell's rigorous standards as well.

Recommended Service Facilities are verified by Hartzell as meeting Hartzell's strict standards to properly service and maintain Hartzell products, including completion of major repairs, warranty work and full propeller overhaul. Service and Support Centers are Hartzell-recognized as meeting standards to perform most major repairs and warranty work.

The designated facilities meet demanding standards and qualifications, including:
Passing Hartzell's regular on-site quality systems and process audits
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David Crass created a new topic ' Turbo induced engine surging' in the forum. 4 days ago

I am a new owner of a 1999 Piper Saratoga II TC. I'm trying to solve a problem with the engine surging. By surging, I mean that the MP will start oscillating 3-4" after smooth, gradual throttle changes. I don't recall that the RPM's were changing. The engine has about 100 hours since overhaul and the Tempest massive electrode plugs were installed about 9 hours ago. The turbocharger wastegate (which was not replaced at engine overhaul) was found to be sticking after soaking in "Mouse Milk" so the wastegate and the actuator were replaced. Induction and exhaust systems were checked for leaks, none found. The engine continued to surge intermittently on the next flight so the turbocharger controller was replaced and all lines checked for condition. MP and Upper Deck lines were clean and dry. After installing the new controller, the engine will still surge during the ground run by my A&P . This aircraft has the TIO-540-AH1A engine and as I understand it, is configured such that there is not a connection between the fuel servo and the Turbo system which is somewhat unique to this series engine. My A&P has talked to two different technicians at Lycoming who were no help with troubleshooting the surging. We plan to do another test flight in the next few days and we will record MP/RPM combinations that induce surging, and verify that RPMs are not changing during a surge event. Any guidance would be greatly appreciated!
Thanks in advance!


Dennis Dunaway replied to the topic 'Installation of Garmin G5 in the DG/HSI position.' in the forum. 6 days ago

I happen to have a few pictures provided by a fellow

Piper flier.


Stan Hester created a new topic ' Removing the overhead trim handle on at 1967 PA-28-140' in the forum. 6 days ago

I'm trying to figure out how to remove the overhead trim handle on a 1967 PA-28 140. I want to replace the overhead plastic, and I need to remove the handle in order to put on a new piece of plastic.

Does anyone know how to do that?


Hello, Does anyone know where the shunt is located in a 1967 pa28-180 cherokee , any help will be appreciated Thanks

Jen D created a new topic ' Happy Thanksgiving!' in the forum. 1 week ago

Happy Thanksgiving, U.S. Piper Flyers! Hope your day is great!


Chris Wieczorek created a new topic ' Change a Passenger Reading Lightbulb' in the forum. 1 week ago


So an odd question, anybody know how to change a passenger reading lightbulb? In my case it's a PA32/260 and one of the reading lights / swivel lights is burned out. From what I can tell looking at replacement assemblies and my own unit, there are no easily accessible screws to make the bulb come out. I tried turning the swivel end as well with no luck. This seems kind of stupid, but maybe somebody can help?

Picture attached with the light I'm trying to replace circled in red.



. . replied to the topic 'PA-28-140 Landing Light / Piper Service Bulletin 975' in the forum. 1 week ago

Here you go!


John Patterson created a new topic ' PA-28-140 Landing Light / Piper Service Bulletin 975' in the forum. 1 week ago

Does anyone have Piper SB 975? It doesn't seem to exist anywhere. The AD that refers to it is out there, but where is the information or diagram that goes with the AD? My landing light was replaced, but the bracket was placed vertically, instead of horizontally, so the retaining ring screws don't go thru the bracket. So the light is just held in with pressure from the retaining ring. There is an indexing slot for the tab on the bulb, but what is the proper orientation for the bracket? Thanks, JP.