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PODCAST

Ask the A&Ps

Experts Mike Busch, Paul New, and Colleen Sterling answer your toughest aviation maintenance questions. Submit questions to podcasts@aopa.org. New episodes are released the first and fifteenth of every month.

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All Episodes

53:38

"That installation is fraught with peril"

Ask the A&Ps ·

2026/04/01

How much should a mechanic tell a client during an annual? Mike, Paul, and Colleen handle this question and more. Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full notes below: Justin flies a Twin Bonanza and cylinder 5 on his left engine takes as much as a minute to fire up and start running. It comes online fastest if he goes very lean quickly after starting. He's pulled the valve cover and springs off, and it's not a

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49:16

"I'm an old mechanic and really like the idea of...

Ask the A&Ps ·

2026/03/15

Quick corrosion, long-lasting engines, and mobility mods are on tap for this episode.Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full episode notes below: Patrick is looking for the right fit on a potential aircraft purchase. He had a shoulder replacement and lost some mobility in his right shoulder. He’s wondering if he could get an accommodation on things like flap controls. Paul suggests he look for an older Cessna

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49:27

"That's an oft-reported myth"

Ask the A&Ps ·

2026/03/01

Is going past TBO more expensive? Plus fuel vents and turbocharger temps. Email podcasts@aopa.org for a chance to get on the show.Join the world's largest aviation community at aopa.org/join Full episode notes below: Mike wonders if running past TBO actually costs more. He has a Mooney and has heard that overhauls far beyond TBO can cost more as a result of having to replace more parts. That is an oft-reported myth, Mike says. The only things that can cause an up charge on most field

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54:37

“Is this like pulling a mattress tag off?”

Ask the A&Ps ·

2026/02/15

What exactly should we be looking for in our cylinders? Plus torque tales, making TBO, and overzealous manufacturers. Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full show notes below: Jared asks what he should be looking for with his borescope. He’s seen bad valves and what that looks like, but he’s also hoping to see what bad scoring and other things. Colleen stresses to focus on what goes wrong with a cylinder, and

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50:03

"The owner can't do maintenance because the owner...

Ask the A&Ps ·

2026/02/04

The definitive guide to owner maintenance, slipping starter adapters, and close CHT tolerances.Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join

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55:57

"You're going to give him nightmares"

Ask the A&Ps ·

2026/01/15

Creative leaning techniques, rusty cylinders, and odd manifold pressure indications are on tap this time. Send your questions to podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join

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42:44

"He has a piston with a smiley face on it that's not...

Ask the A&Ps ·

2026/01/01

Old engines, rusty airplanes, and a strange valve incident are the puzzlers for Mike, Paul, and Colleen this episode. Send your questions to podcasts@aopa.org for a chance to get on the show.Join the world's largest aviation community at aopa.org/join Full episode notes below: John has a Beech Musketeer who had an unusual situation with his valve. The valve seat separated from the cylinder barrel and dropped down, striking the piston crown. He's wondering if he did anything to cause this,

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44:13

"Just be sure you lube it with something"

Ask the A&Ps ·

2025/12/15

Pre-emptive engine overhauls, upgrading an old electrical system, spark plug anti-seize, and old wood wing concerns are on tap for this episode. Send your questions to podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full episode notes below: Lance inherited some furniture that had lived in the Midwest for 200 years, and began splitting after only a few years after he moved to Salt Lake City. He's wondering if the same concern would

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51:18

"If you go to 76 percent, the wings will fall off"

Ask the A&Ps ·

2025/12/01

A creative modification, lean of peak with turbocharging, electronic ignition, and oil leaks are on tap. Email podcasts@aopa.org for a chance to get on the show.Join the world's largest aviation community at aopa.org/join Full notes below: Tom has a turbocharged Mooney and he's wondering how to manage it while lean of peak. The hosts say the first goal is to get on the lean side quickly, and then fine tune once there. They argue you can hear and feel when you're lean of peak, which is how you

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52:08

"It's one of the few accidents where you get to...

Ask the A&Ps ·

2025/11/15

Mike, Paul, and Colleen dig deep for some detailed troubleshooting on digital fuel indicators, oil temperature, gear problems, and more this episode. Send your questions to podcast@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full notes below: Will's fuel indicators are giving off infrequent red Xs on his Garmin G1000, and it started happening right after maintenance. Paul is suspect that a mechanic caused it, especially because you have

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50:46

"Being an aircraft owner is the hardest job in aviation"

Ask the A&Ps ·

2025/11/01

From maintaining aircraft records to dealing with bad advice and sub-standard parts, Mike, Paul, and Colleen say being an aircraft owner is one of the hardest jobs in aviation. Email your questions to podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full notes below: Randy wants to know if circuit breakers have a life limit. He has a Mooney with about 3,000 hours. He had one that was acting up, and was wondering if he should

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49:30

"That's an urban legend"

Ask the A&Ps ·

2025/10/15

What's in our oil, how to keep cool (and warm), and lean of peak are on tap for this episode. Email podcasts@aopa.org for a chance to get on the show.Join the world's largest aviation community at aopa.org/join Full episode notes below: Mark flies a 182 and he read on a forum that the reason we've had so much spalling of lifters is because they took zinc out of the oil. Mike said this rumor has been going around for years, but doesn't make sense considering zinc was never in aviation oil

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49:00

"More time to fly, less time to turn wrenches"

Ask the A&Ps ·

2025/10/01

In this episode, Mike, Paul, and Colleen discuss unnecessary maintenance, lean of peak, and flaming exhausts! Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full episode notes below: Mitchell has a Cessna 185 and he's wondering if it's smart to change out the rotocoils on his engine at some pre-determined point in order to avoid uneven heat patterns on his exhaust valves. Paul, despite having done this, advises him to

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53:07

"You have a lot of splaining to do"

Ask the A&Ps ·

2025/09/17

Gotchas and head-scratchers are the theme this episode, as Mike, Paul, and Colleen help an owner with a pitted camshaft, an inop instrument, a faulty vacuum line, and ops procedures.Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full episode notes below: Mike had two airplanes over the past 10 years with crankshaft pitting, despite regularly flying, hangaring, and using an engine dehydrator. He's wondering if there's

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56:40

"Mechanics can be ornery sometimes"

Ask the A&Ps ·

2025/09/01

How do you fix a fix? Mike, Paul, and Colleen explore STC challenges, including parts, wrong installations, and ADS-B that isn't working.Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org Full notes below: Barat has a Cirrus SR22 with an STC air conditioner. The driveshaft recently broke and he’s wondering how to fix it. Some mechanics he’s spoken to won’t use alternative parts, but others will. Mike said it’s not unlike altering

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44:53

Live from Airventure 2025

Ask the A&Ps ·

2025/08/22

Mike, Paul, and Colleen are in the hot seat as they answer live audience questions from Airventure 2025.We'll be back with our regular show next time. Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join

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62:01

"That'd be like putting grease on the road"

Ask the A&Ps ·

2025/08/01

How to tell the difference between greases? Mike, Paul, and Collen break it down, plus high lean of peak temps, breaking in an engine on an experimental, and composite airframe cracks.Email podcasts@aopa.org for a chance to be on the show. Join the world's largest aviation community at aopa.org/join Full episode notes below: Mark wants to make sure he’s clear on which grease to use for which application. The manuals call for specific greases, but there are allowances for those with equivalent

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41:59

"That's one way to flat spot a tire"

Ask the A&Ps ·

2025/07/15

Mike, Paul, and Colleen explain why they almost never set their parking brakes. Plus, valve guide concerns and gotchas on preflight. Email podcasts@aopa.org for a chance to be on the show.Join the world's largest aviation community at aopa.org/join Full notes below: William wants to know how Mike, Paul, and Colleen do preflight inspections as A&Ps, and if they look at something that most pilots don’t. Colleen said she always checks the last thing she worked on. She suggests to look really

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61:06

"An airplane with no engine is worth nothing"

Ask the A&Ps ·

2025/07/01

Oil is everywhere this time, with consumption and temperatures problems for three of our owners. Email podcasts@aopa.org for a chance to get on the show.Join the world's largest aviation community at aopa.org/join Full notes below: Mark has a Twin Comanche and is loving his new electronic ignition. He has an issue where oil temperature and CHTs are slightly different on one engine than the other. His oil temperature also spiked on one climbout on a hot day, and he’s wondering what’s wrong

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63:11

"You have to cart mogas around like a homeless person"

Ask the A&Ps ·

2025/06/15

A Cirrus with fluctuating fuel flow, de-injecting an engine, and fear of overhaul are on tap for this episode. Email podcasts@aopa.org for a chance to get on the show. Join the world's largest aviation community at aopa.org/join Full notes below: Joe has a Maule with a 540 engine in it. The company has a mod to turn the engine to a carbureted version and he’s wondering about the legality of something like that. Paul said it happens in the 210 market. Whether it’s a good idea is another

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102 results

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